JP2014060679A - Packet transfer method and node device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packet transfer method in which a node device operation is simplified and congestion is unlikely to occur, and which can also be adapted to an IP address of MAC operation of a host network that requires a large-scaled table, can accomplish a high-speed node device, can accomplish a large-scaled network, can be accomplished only by using a free space in a header of a conventional packet and can also be adapted even to a mobile network.SOLUTION: A ring node device is configured in such a manner that a packet performing ADD to a ring rides on a ring transmission line indicated by bits at a low-order specific position in a source address or a destination address of the packet, a packet to be transferred on the ring performs DROP only when an address of a drop address table in which only drop addresses are written correspondingly to ports from the ring is matched to a destination address of the packet, and other packets are through-transferred.

Description

  The present invention relates to a packet transfer method in a ring network in which an IP address or a MAC address operates in a MAC operation or a one-flow operation, and a node device performing a MAC operation used therein.

  The conventional MAC is a transmission method characterized in that if the destination is not written in the switch table, it is flooded and a route is set by a response from the other party before proceeding. Therefore, the conventional MAC switch is congested due to flooding, so that the loop connection cannot be made and the network cannot be enlarged.

  In order to prevent the loop flow, the conventional MAC switch is mounted with an STP (Spanning Tree Protocol) and controlled so as to prevent the loop. In addition, conventional rings such as EASP, MRP, and MMRP2 using a MAC switch such as L2SW have been proposed. However, all of them have a point on the ring flow to be cut off.

  On the other hand, the packet transfer on the ring is encapsulated by attaching the MAC address of the ADD node of the packet to the ring and the MAC address of the node that DROPs from the ring to the terminal MAC header. An RPR that realizes MAC ring transfer is proposed and standardized only when it has a function of discarding a packet that circulates above the source ADD ring node and discarding the packet.

  The ring network is an IEEE 802.17 RPR (Resilient Packet Ring). As an example of this prior art, there is Patent Document 1 (packet ring network system and forwarding database management method). These RPRs solved a congestion storm caused by a loop which has been a problem in the past.

JP 2009-77285 A

  The RPR described above uses a special RPR header, and the RPR header requires a DROP node number, which takes time to learn. Even after creating the conversion table FDB (Forwarding Database), it is necessary to attach a header having the MAC address of the DROP destination node to the packet received from the terminal by looking at this table, and it takes time for conversion.

  RPR transfers control packets between ring nodes, so that each node has position information of other nodes on the ring, and the shortest path to the DROP node is known. However, in order to connect to another ring, it is necessary to set the other ring ID in the packet, and it takes time to learn. Therefore, since RPR is basically difficult to apply to other than a single double ring, there are application examples to MAN and LAN, but there is no application example to a large-scale network.

  In addition, since RPR is encapsulated, high-speed transfer is possible on the ring, but in order to connect to another ring, it is necessary to learn the ring drop node again at the other ring entrance node. There's a problem.

  Also, since RPR is encapsulated, it is also a path connection ring. However, there is a problem that a packet having a path configuration inputted from outside the ring cannot be transferred on the ring unless it is further encapsulated in the ring by a ring header.

  There is MAC in MAC as a conventional path configuration packet, but when it is necessary to set the path of the path, such as path recovery operation, the spanning tree protocol needs to run, so a ring is configured with that packet There are no examples.

  Further, in the conventional MACSW table, the MAC source address and its port number that are not used for a predetermined time or more are counted when they are not used for each address, and are discarded when a predetermined time or more elapses. For this reason, the operation of the table is complicated, and there is a problem that a table with a large number of MAC addresses cannot be configured.

  There is a conventional MACSW shown in FIG. 35 as a node device performing a conventional MAC type operation applied to a ring. In FIG. 35, reference numeral 10 is a node device, reference numeral 11 is a MAC address table in which the source address of a packet input to each port used therein and its input port are recorded, reference numeral 12 is a clockwise ring transmission path, reference numeral 13 is left A round ring transmission line, reference numeral 15 is an input packet header reading circuit.

  Buffers necessary for the packet confluence at each header reading circuit and ring transmission path are omitted in the figure. If the destination address of the packet input to each port is in the MAC address table 11, it is output to the port written with the address, otherwise it is copied as an unknown packet and output to all ports. In the figure, English letters CD, BA, etc. after MAC in the display of MACCD, MACBA, MACAB, MACDC indicate that the destination address is C, B and the source address is D, A.

  The packet MACBA arriving at the port 2 of the right node is sent as (1) MACBA to the counterclockwise ring transmission line 13 connected to the port 4 that is the output destination port of the destination address MACB of the MAC address table 11, It is dropped as (2) MACBA to port 2 which is the output destination port of the destination address MACB in the MAC address table 11 of the node.

  On the other hand, the packet MACAB that has arrived at the port 2 of the left node, which is the opposite flow, is transferred to the clockwise ring transmission path 12 connected to the port 3 that is the output destination port of the destination address MACA of the MAC address table 11 (3) MACAB And is dropped as (4) MACAB to port 2 which is the output destination port of the destination address MACA in the MAC address table 11 of the right node. The operations of (5), (6) MACCD, and (7), (8) MACDC are the same.

  Next, FIG. 36 shows a conventional RPR ring operation. FIG. 36 has four ring nodes of nodes A, B, C, and D on the 0-system ring transmission line and the 1-system ring transmission line, and each ring node is a MAC source address as its ring node identification number. It has MACA, MACB, MACC, and MACD. A terminal H is connected to the node A, a terminal F is connected to the node B, and a terminal G is connected to the node C. The MAC source address of terminal H is MACH, the IP source address is IPH, the MAC source address of terminal F is MACF, the IP source address is IPF, the MAC source address of terminal G is MACC, and IP The source address is IPC.

  The packet transmission on the ring is performed by adding a MAC header having a node MAC source address and a node MAC destination address necessary for transferring the packet on the ring to the packet arriving from the terminal. For this purpose, a header conversion table necessary to attach a node MAC header for inter-node transfer to the terminal MAC header is provided at the entrance to the ring of each node.

  The conversion table needs to be learned and held when the terminal first arrives at the node from each terminal. This is performed by an ARP packet arriving from the terminal, and the diagram of this conventional example shows the operation. The operation is shown below.

  The terminal H has an IPF which is an IP destination address from the terminal H to the terminal F, the MAC destination address is all 1, and the terminal H has a MAC source address MACH and an IP source address IPH. ARP packet (1) When ARP, MAC, all1, H, IPF, H arrives at ring node A, node A does not know the destination of the packet, so the MAC packet is a broadcast packet display. Packets with MAC address of MACA which is MAC destination address of node A and MAC source address of node A, (2) Broadcast, MAC, all1, A, MAC, all1, H, IPF, H Or send to one ring.

  The packet is copied and dropped at each of the nodes B, C, and D. The packet dropped at each node creates a header conversion table of MACA which is the outer MAC source address of the packet and MACH which is the terminal MAC source address at the exit of the node, and then the outer MAC header is removed. (3) ARP, MAC, all1, H, IPF, H are sent to the lower drop transmission line. Only the terminal H whose IPF that is the destination IP address of the packet matches the IP source address of the terminal captures the packet, and receives the ARP response packet, (4) ARP response, MAC, H, F, IPH, Send F to Node B.

  The node B searches the header ring table for the destination ring node MAC address from the MAC destination address of the terminal packet, and also creates a header conversion table regarding the connection between the terminals describing the relationship between the terminal H, the terminal F, and the node A. Completion, the MAC packet for transfer between ring nodes, MAC, A, B is attached to the terminal packet, and (5) MAC, A, B, MAC, H, F, IPH, F are sent to the system 1 ring To do. At that time, since the node B knows in advance the shortest route to the destination node A, the node B sends the packet to the system 1 ring. The packet that goes up to the system 1 ring is dropped at the node A which is the destination of the packet, and at the drop point exit, the packet is related to the inter-terminal connection describing the relationship between the terminal H, the terminal F, and the node B. After completing the header conversion table, the outer MAC header is removed and sent to the terminal H as (6) ARP response, MAC, H, F, IPFH, F. Thereafter, packet transfer between the terminal H and the terminal F via this ring is performed using the header conversion table created in the node A and the node B.

  FIG. 37 shows the unicast packet transfer operation in that case after the MAC conversion table of each node is completed in the RPR which is the prior art. In this figure, terminal E and terminal H are connected to node A, terminal F is connected to node B, terminal G is connected to node C, and packets are transferred between terminal H and terminal F and between terminal E and terminal G. Shows how this is done.

  In FIG. 37, a MAC header of a packet transferred between terminals via a ring node is shown on each ring. Each terminal uses the relationship table of the source terminal MAC address, the destination terminal MAC address, the source node MAC address, and the destination node MAC address shown in the header conversion table of node A, node B, and node C. When going up to the ring of each node, the header is converted and the packet is transferred.

  The MACSW MAC address table used for such a conventional ring has to store the source address and port number of the entrance port of the ring transmission path with a large traffic volume, and there is a problem that the MAC table becomes large.

  Further, in the conventional MACSW table, the MAC source address and its port number that are not used for a predetermined time or more are counted when they are not used for each address, and are discarded when a predetermined time or more elapses. For this reason, the operation of the table is complicated, and there is a problem that a table with a large number of MAC addresses cannot be configured.

  In addition, a special RPR header is used for RPR, and a DROP node number is required for the RPR header. In addition, when a ring node drops a copy packet at each node when broadcasting an inter-node MAC address for creating a header translation table, the transmission included in the broadcast packet in the header translation table at the exit of that node The relationship table between the MAC address of the original terminal and the connection-destination ring node MAC address of the terminal must be left in all the ring nodes, resulting in a problem of complicated operation.

  In addition, RPR requires a topology learning operation in order to form a multi-ring, and there is a problem that it takes time for learning. For this reason, the packet route cannot be automatically set. Therefore, RPR is basically difficult to apply to other than a single ring, and a large network having a ring hierarchical structure cannot be realized. RPR has application examples to MAN and LAN, but not to the national network.

  The present invention has been made under such a background, and an IP address or MAC address that can solve one or more of the above-described problems operates in a MAC-type path operation or a one-flow operation. It is an object of the present invention to provide a packet transfer method in a ring network and a node device performing MAC type operation used therein.

  The present invention is applied to one double ring network that forwards packets having a source address and a destination address, and each node on the ring supports one drop address table in which a drop address is written or a ring transmission line. The source address or destination address corresponding to the selected ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path. This network has a configuration including an ADD address table. When a transmission line failure or a node failure occurs, this network has a transmission line loopback at nodes on both sides of the failure point or a transmission line loop at nodes on both sides of the failure node. A double ring network consisting of 0 series and 1 series Thus, for the packet to be ADDed to the ring of the node, the node recognizes the initial setting packet, the calling packet, or the route setting packet, and sets the address of the drop address table by the initial setting packet, the calling packet, or the route setting packet. In the configuration, an initialization packet, a call packet, or a routing packet records the source address of the packet in one or both drop address tables, and the ring corresponding to the lower specific bit of the packet source address or destination address. If a normal packet other than an outgoing call is sent to the transmission line and there is one or an ADD address table corresponding to the ring transmission line, and the selected ring transmission line is written corresponding to the source address or destination address, If the source address or destination address is written for the selected ring transmission line, the ring transmission line name is written in the ADD destination ring transmission line selection bit area of the packet, sent to the ring transmission line, and written. If there is no such table and there is no such table, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the source of the packet is stored in one or a drop address table corresponding to the ring transmission path. If an address-capable ADD destination ring transmission path is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path, while the node is initialized. Packet or call packet or routing packet and drop In a node configuration where the address table setting packet cannot be identified, all ADD packets have an ADD address table corresponding to one or ring transmission path, and a selected ring transmission path is written corresponding to the source address or destination address. Or, if the source address or the destination address is written for the selected ring transmission path, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet as it is, and the ring transmission is performed. If there is no table, or if it is not written there, a drop address table corresponding to one or the ring transmission path is searched, and if there is no address corresponding to the source address of the packet, Drops for one or both ring transmission lines If the source address is written in the group address table, and if it is written, and if the selection destination ring transmission path is not written, the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet If the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, and the ring transmission is performed. If one of the packets sent to the path and transferred on the ring input to the node or the address of the input drop address table corresponding to the ring matches the destination address of the packet, DROP and DROP destination Packet dropped from clockwise ring and left Packets dropped from the ring are merged, the others are passed through, and if there is no destination even after going around the ring, it is converted to a copy packet with a copy bit and copied to the port exiting the ring at each node In addition, a packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation is characterized in that a copy packet that has made one round is discarded.

  The present invention is applied to one double ring network that forwards packets having a source address and a destination address, and each node on the ring supports one drop address table in which a drop address is written or a ring transmission line. The source address or destination address corresponding to the selected ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path. This network has a configuration including an ADD address table. When a transmission line failure or a node failure occurs, this network has a transmission line loopback at nodes on both sides of the failure point or a transmission line loop at nodes on both sides of the failure node. A double ring network consisting of 0 series and 1 series Thus, each router, server, edge node, MAC, IP converter accommodated in this network periodically raises a one-way setting packet having a destination address of all 0 and having only a source address to the ring. The source address is written in the drop address table at the entrance of the ring. For packets that are ADDed to the ring of the node, the node recognizes the initial setting packet, call packet, or route setting packet, and sets the address of the drop address table In a configuration in which the initial setting packet, the calling packet, or the routing packet is performed, the initial setting packet, the calling packet, or the routing packet records the source address of the packet in one or both drop address tables, and The packet is sent to the ring transmission line corresponding to the low-order specific bit of the source address or destination address of the packet, and there is one or more ADD address table corresponding to the ring transmission line for the normal packet other than the outgoing call. When the selected ring transmission path is written corresponding to the destination address, or when the source address or the destination address is written corresponding to the selected ring transmission path, the ring transmission path name is used as the ADD destination ring transmission of the packet. Write to the path selection bit area and send it to the ring transmission path.If not written and if there is no table, send it to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet. On the other hand, one or a ring transmission line compatible If the ADD destination ring transmission path corresponding to the source address of the packet is written in the drop address table, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. On the other hand, in the node configuration in which the node cannot identify the initial setting packet, the calling packet, the route setting packet, and the drop address table setting packet, all the ADD packets have one or an ADD address table corresponding to the ring transmission path, If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is left as it is. Packet AD Write to the destination ring transmission path selection bit area and send it to the ring transmission path. If there is no table, or if there is no table, search the drop address table corresponding to one or the ring transmission path. If there is no address corresponding to the source address of the packet, the source address is written in the drop address table corresponding to one or both ring transmission paths, and in that case, the selected ring transmission path is If it is not written, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table Indicates the name of the ring transmission line in the ADD destination ring transmission line selection block of the packet. For a packet that is written to the destination area, sent to the ring transmission path, and transferred on the ring that is input to the node, one or the address of the input drop address table corresponding to the ring matches the destination address of the packet. In this case, DROP and DROP destination DROP packet from the clockwise ring and DROP packet from the counterclockwise ring merge, otherwise pass through, and discard if there is no destination even after one round on the ring MAC operation type 1 characterized in that it is configured, or is converted into a copy packet having a copy bit, copied to a port exiting from the ring at each node, and a copy packet that has made one round is discarded. This is a packet transfer method in a double ring network in which a flow operation or a MAC operation type path operation is performed.

  The present invention is applied to one double ring network that forwards packets having a source address and a destination address, and each node on the ring supports one drop address table in which a drop address is written or a ring transmission line. The source address or destination address corresponding to the selected ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path. This network has a configuration including an ADD address table. When a transmission line failure or a node failure occurs, this network has a transmission line loopback at nodes on both sides of the failure point or a transmission line loop at nodes on both sides of the failure node. A double ring network consisting of 0 series and 1 series Thus, the packet to be ADDed to the ring of the node has one or an ADD address table corresponding to the ring transmission path, and if the selected ring transmission path is written corresponding to the source address or the destination address, or is selected. If the source address or destination address is written for the ring transmission line, the ring transmission line name is written in the ADD destination ring transmission line selection bit area of the packet, sent to the ring transmission line, and not written. If there is no such table, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet. ADD destination ring transmission line written In some cases, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and the packet transferred on the ring is a single drop in which only the drop address is written. If the address in the address table or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is the same as the destination address of the packet, DROP and DROP destination from the clockwise ring This is a packet transfer method in a double ring network that operates in a MAC operation type path, characterized in that a DROP packet and a DROP packet from a counterclockwise ring are merged and the other packets are passed.

  The present invention is applied to a multi-stage ring tree network in which ring networks for transferring packets having a source address and a destination address are connected in a tree shape, and each node on the ring has a single drop address written with a drop address. Either the address table or only the drop address table with the same drop address written for the ring transmission path, or one source address corresponding to the ring transmission path is automatically selected when steering or setting the shortest path for the ring transmission path Or, it has a configuration including an ADD address table in which a destination address is set, and when a transmission line failure or node failure occurs, a node on both sides of the failure point causes a transmission line loopback or a node on both sides of the failure node. 0 system 1 system loops back on transmission line In the double ring network, there is a transmission path between the upper ring and the lower ring, through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted. If the packet of the packet goes up to the upper ring or the lower ring of the ADD destination, or if the packet goes up to the lowest ring, there is one or an ADD address table corresponding to the ring transmission path, and the source address or destination If the selected ring transmission path is written corresponding to the address, or if the source address or the destination address is written corresponding to the selected ring transmission path, the ring transmission path name is set to the ADD destination ring transmission path of the packet. Write to the selected bit area and send it to the ring transmission line. If there is no such table, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring transmission path is written in one or the drop address table corresponding to the ring transmission path. In this case, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and the packet to be transferred on the ring is a single packet in which only the drop address is written. If the address of the drop address table or the address of the drop address table in which only the ring-corresponding drop address input to the node of the packet matches the destination address of the packet, DROP, otherwise pass through as it is, MA characterized by This is a packet transfer method in a double ring network that operates in a C operation type path.

  The present invention is applied to a multi-stage ring tree network in which ring networks for transferring packets having a source address and a destination address are connected in a tree shape, and each node on the ring has a single drop address written with a drop address. Either the address table or only the drop address table with the same drop address written for the ring transmission path, or one source address corresponding to the ring transmission path is automatically selected when steering or setting the shortest path for the ring transmission path Or, it has a configuration including an ADD address table in which a destination address is set, and when a transmission line failure or node failure occurs, a node on both sides of the failure point causes a transmission line loopback or a node on both sides of the failure node. 0 system 1 system loops back on transmission line A router, a server, an edge node, a MAC, and an IP conversion device accommodated in this network, each of which has a destination address of 0 and a single path setting packet having only a source address. It is configured so that it is periodically raised to the top ring and written to the drop address table at the entrance of the ring. Between the upper ring and the lower ring, a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring If there is a transmission path to which the packets are joined and transmitted, and the packet of that transmission path goes up to the ADD destination upper ring or lower ring, or if the packet goes up to the lowest ring, the node Or recognize the call packet or routing packet and drop address In a configuration in which the address of a table is set by an initialization packet, a call packet, or a routing packet, the initialization packet, the calling packet, or the routing packet sets the source address of the packet in one or both drop address tables. The packet is recorded and sent to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet, and the normal packet other than the call has one or an ADD address table corresponding to the ring transmission line, and the source address Alternatively, when the selected ring transmission path is written corresponding to the destination address, or when the source address or the destination address is written corresponding to the selected ring transmission path, the ring transmission path name is set to the ADD destination of the packet. ring Write to the transmission path selection bit area and send it to the ring transmission path. If it is not written or if there is no table, send it to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet. On the other hand, when the ADD destination ring transmission path corresponding to the source address of the packet is written in one or the drop address table corresponding to the ring transmission path, the ring transmission path name is designated as the ADD destination ring transmission path selection bit area of the packet. In the node configuration in which the node cannot identify the initial setting packet or the call packet or the route setting packet and the drop address table setting packet, all the packets to be ADDed are ADD address table corresponding to ring transmission line If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the ring transmission is performed as it is. Write the path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path. If there is no table or there is no table, drop address corresponding to one or ring transmission path If the table is searched and there is no address corresponding to the source address of the packet, the source address is written in the drop address table corresponding to one or both ring transmission paths, and if and when written If the destination ring transmission path is not written, the packet If the ADD destination ring transmission line name corresponding to the source address of the packet is written in the drop address table, the ring transmission line name is added to the ADD of the packet. The packet that is written in the destination ring transmission path selection bit area, sent to the ring transmission path, and transferred on the ring is the address of one drop address table in which only the drop address is written or the ring that is input to the node of the packet If the address of the drop address table in which only the corresponding drop address is written matches the destination address of the packet, DROP, if not, pass as it is, and pass through the packet that is transferred by the ADD node or the multi-round bit grant node. Bi If the node connected to the upper ring determines that there is no destination even if it makes one round on the ring, it drops at that node and goes up to the upper ring. This is a packet transfer method in a double ring network in which a MAC operation type 1 flow operation or a MAC operation type path operation is characterized.

  The present invention is applied to a multi-stage ring tree network in which ring networks for transferring packets having a source address and a destination address are connected in a tree shape, and each node on the ring has a single drop address written with a drop address. Either the address table or only the drop address table with the same drop address written for the ring transmission path, or one source address corresponding to the ring transmission path is automatically selected when steering or setting the shortest path for the ring transmission path Or, it has a configuration including an ADD address table in which a destination address is set, and when a transmission line failure or node failure occurs, a node on both sides of the failure point causes a transmission line loopback or a node on both sides of the failure node. 0 system 1 system loops back on transmission line A single-path network in which each of the edge node devices, distribution service companies, distribution service devices, and broadcasting stations accommodated in this network has a destination address of all 0 and only a source address. The configuration copy packet is raised once and periodically to the top ring, and the one-path configuration copy packet copied in the top ring is copied to the subordinate ring and copied to all nodes on the ring in each ring. The source address is written in the drop address table at the entrance of the ring, and the one-path setting copy packet that goes around each ring is discarded. Between the upper ring and the lower ring, the packet dropped from the clockwise ring and the left There is a transmission path on which DROP packets from the surrounding ring are joined and transmitted. When the packet of the transmission path goes up to the ADD destination upper ring or lower ring, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the routing packet and drops it. In a configuration in which the address table address is set by the initial setting packet, the calling packet, or the routing packet, the initial setting packet, the calling packet, or the routing packet is stored in one or both drop address tables in the source address of the packet. Is sent to the ring transmission line corresponding to the low-order specific bit of the source address or destination address of the packet, and the normal packet other than the call has one or an ADD address table corresponding to the ring transmission line. Address or If the selected ring transmission path is written corresponding to the destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the ring transmission path name is set to the ADD destination ring of the packet. Write to the transmission path selection bit area and send it to the ring transmission path. If it is not written or if there is no table, send it to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet. On the other hand, when the ADD destination ring transmission path corresponding to the source address of the packet is written in one or the drop address table corresponding to the ring transmission path, the ring transmission path name is set to the ADD destination ring transmission path selection bit area of the packet To the ring transmission line, while the node In a node configuration in which an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet cannot be identified, every ADD packet has one or an ADD address table corresponding to a ring transmission path, and a source address or destination If the selected ring transmission path is written corresponding to the destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ring transmission path selection bit area and send it to the ring transmission path. If there is no table, or if there is no table, search the drop address table corresponding to one or the ring transmission path, Packet source address If there is no address corresponding to “less”, the source address is written in the drop address table corresponding to one or both ring transmission lines, and if and when it is written, the selected ring transmission line is not written. Is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring transmission path The name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and the packet transferred on the ring is the address of one drop address table in which only the drop address is written or the packet The drop address for the ring entered in the node If the address of the drop address table where the address is written matches the destination address of the packet, DROP, if not, pass as it is, and attach the multi-round bit to the packet transferred by the ADD node or multi-round bit grant node When the node connected to the upper ring determines that there is no destination even if it makes one round on the ring, it drops at that node and goes up to the upper ring, and at that time, the multi-round bit is dropped. A packet transfer method in a double ring network that performs MAC operation type 1 flow operation or MAC operation type path operation.

  The present invention transfers a packet having a source address and a destination address under each of a plurality of rings of a mesh ring network in which a large number of ring networks that transfer packets having a source address and a destination address are connected in a plane. Is a complex network in which the top ring of a multi-stage ring tree network is connected, and each node on the ring has a drop address assigned to each node on the ring. Only one drop address table written or only one drop address table with the same drop address written corresponding to the ring transmission path, or selected ring transmission automatically when steering or setting the shortest path corresponding to one or ring transmission path Source address or destination address corresponding to the route When a transmission line failure or node failure occurs, a transmission line loopback is performed at nodes on both sides of the failure location or a transmission line loop is performed at both nodes on the failure node. It is a double ring network consisting of 0 system and 1 system to be backed up, and the router, server, edge node, MAC, IP conversion device accommodated in this network has the destination address of all 0, only the source address It is configured to raise the single-path setting packet once and periodically to the ring edge of the mesh ring network where many plane connections are made and write the source address to the drop address table at the entrance of each ring. In the mesh ring network, the DROP was performed from the clockwise ring between the connecting and disconnecting rings. And a packet that has been dropped from the counterclockwise ring are transmitted and the packet of that transmission line goes up to the disjunction ring of the ADD destination, or in the lower tree network, the upper ring, Between the lower rings, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and the packet on the transmission path rises to the upper ring or lower ring of the ADD destination. In this case, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the route setting packet, and sets the address of the drop address table as the initial setting packet, the calling packet, or For configurations that use route setup packets, the initial setup packet, call packet, or route A setup packet records the source address of the packet in one or both drop address tables, and sends it to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet. If there is an ADD address table corresponding to one or ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the source address or destination corresponding to the selected ring transmission path If the address is written, write the ring transmission path name in the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if it is not written and if there is no table, The source address or destination of the packet If the ADD destination ring transmission path corresponding to the source address of the packet is written in one or the drop address table corresponding to the ring transmission path, the ring is transmitted to the ring transmission path indicated by the lower specific bit of the nation address. Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path. On the other hand, the node cannot identify the initial setting packet, the calling packet, the path setting packet, and the drop address table setting packet. In the node configuration, every ADD packet has an ADD address table corresponding to one or a ring transmission path, and a selection ring transmission path is written corresponding to a source address or a destination address, or a selection ring Source address for transmission line Alternatively, if the destination address is written, the name of the ring transmission path is written in the ADD destination ring transmission path selection bit area of the packet as it is and sent to the ring transmission path. If there is no address corresponding to the source address of the packet, the drop address table corresponding to one or both ring transmission paths is searched. If the source address is written, and if and when it is written, and the selected destination ring transmission path is not written, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet. , Drop address table corresponding to the source address of the packet If the ADD destination ring transmission path name is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and the packet transferred on the ring is dropped. If the address of one drop address table in which only the address is written or the address in the drop address table in which only the ring-corresponding drop address input to the node of the packet matches the destination address of the packet, DROP is performed. If there is no destination, the node connected to the upper ring determines that there is no destination even if it makes one round on the ring by attaching a multi-round bit to the packet transferred by the ADD node or the multi-round bit grant node. In that case, drop at that node and move up to the upper ring. At that time, the multi-round bit of the packet is dropped, and when there is no destination on the ring that goes up to the mesh ring network connected in a large number of planes, there are many packets transferred by the ADD node or multi-round bit granting node. Set the round bit, copy it to the ring transmission line connected to multiple horizontal rings, move to the horizontal ring, drop the multi round bit of the packet, and discard the packet with the multi round bit that goes around the ring A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation.

  The present invention transfers a packet having a source address and a destination address under each of a plurality of rings of a ring network in which many ring networks that transfer packets having a source address and a destination address are connected in a skewered manner. A multi-stage ring tree network is a complex network in which ring networks are connected in the form of a tree, and one double ring network of this network has a drop address written to each node on the ring. Either a single drop address table or a drop address table with the same drop address written for a ring transmission path, or a ring transmission path that is automatically selected when steering or setting the shortest path for one or a ring transmission path Corresponding source address or destination address is set. In addition, when a transmission line failure or node failure occurs, a transmission line loopback is performed at the nodes on both sides of the failure location or a transmission line loopback is performed at the nodes on both sides of the failure node. A double ring network consisting of a 0 system and a 1 system, and each router, server, edge node, MAC, or IP conversion device accommodated in this network has a destination address of all 0 and has only a source address. The configuration is such that the routing packet is raised once and periodically up to the skewed multiple ring network, and the source address is written in the drop address table at the entrance of each ring. Between the upper ring and the lower ring, DROP from the clockwise ring Packet and DROP packet from the counterclockwise ring are merged and transmitted. If there is a transmission line and the packet of that transmission line goes up to the upper ring or lower ring of the ADD destination, or if the packet goes up to the lowermost ring, the node sets the initialization packet, the call packet, or the path setting. In a configuration in which the packet is recognized and the address of the drop address table is set by the initial setting packet, the calling packet, or the routing packet, the initial setting packet, the calling packet, or the routing packet has one or both drop address tables. The source address of the packet is recorded and sent to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet, and the normal packet other than the call is one or an ADD address corresponding to the ring transmission line There is a table and If a selected ring transmission path is written corresponding to the source address or destination address, or if a source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is added to the ADD of the packet. Write to the destination ring transmission path selection bit area, send it to that ring transmission path, and if it is not written or if there is no table, it will be sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet On the other hand, if the ADD destination ring transmission path corresponding to the source address of the packet is written in one or the drop address table corresponding to the ring transmission path, the ring transmission path name is selected as the ADD destination ring transmission path of the packet. Write to the bit area and send it to the ring transmission line. On the other hand, in the node configuration in which the node cannot identify the initial setting packet, the calling packet, the route setting packet, and the drop address table setting packet, all the ADD packets have one or an ADD address table corresponding to the ring transmission line. If the selected ring transmission path is written corresponding to the source address or the destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the ring transmission path is left as it is. The name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no table or there is no table there, one or a drop address table corresponding to the ring transmission path Find and there If there is no address corresponding to the source address of the packet, the source address is written in the drop address table corresponding to one or both ring transmission paths, and in that case, the selected ring transmission path is written. If not, send to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table The ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and the packet transferred on the ring is the address of one drop address table in which only the drop address is written, or Supports ring input to the node of the packet If the address of the drop address table in which only the drop address is written matches the destination address of the packet, DROP, if not, pass as it is, and the multi-round bit of the packet transferred by the ADD node or multi-round bit grant node If the first node of the two nodes connected to the upper ring determines that there is no destination even if it makes one round on the ring by attaching a multi-round bit to the area, it goes up to the upper ring at that node. At that time, the multi-round bit of the packet is dropped, and if there is no destination even if it makes a round on the ring in the highest skewered ring, it is converted into a copy packet, and two for each connection ring that moves to the adjacent ring Copy at one node and move to the adjacent ring, at which time the packet's copy bit is dropped, and If there is no destination even in the adjacent ring, it becomes a multi-round packet, makes a copy packet, and copies to two adjacent nodes for each connection ring that moves to the adjacent ring, then moves to the adjacent ring. At that time, the multi-round bit of the packet The copy bit is dropped and the copy packet that has made one round in each original ring is discarded, and the node that connects between the upper and lower rings is the node at the time of the failure of the inter-ring connection transmission path of that node or the node of the transmission path destination When a failure occurs, all packets input to the node are allowed to pass through, and this is a packet transfer method in a double ring network in which a MAC operation type 1 flow operation or a MAC operation type path operation is performed.

The present invention transfers a packet having a source address and a destination address under each of a plurality of rings of a ring network in which many ring networks that transfer packets having a source address and a destination address are connected in a skewered manner. A multi-stage ring tree network is a complex network in which ring networks are connected in the form of a tree, and one double ring network of this network has a drop address written to each node on the ring. Either a single drop address table or a drop address table with the same drop address written for a ring transmission path, or a ring transmission path that is automatically selected when steering or setting the shortest path for one or a ring transmission path Corresponding source address or destination address is set. A configuration with the addition of ADD address table to be,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node. A router, server, edge node, MAC, or IP conversion device accommodated in this network has a one-way destination packet with a destination address of all 0 and a single-path setup packet having only a source address once or periodically in a skewed multiple ring The source address is written to the drop address table at the entrance of each ring and the source address is written to the network. In a ring network connected in a skewered manner, a packet dropped from the clockwise ring and the left There is a transmission path through which packets dropped from the surrounding ring are joined and transmitted. In the lower tree network, a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged between the upper ring and the lower ring in the lower tree network. If the transmission path packet goes up to the upper ring or lower ring of the ADD destination, or if the packet goes up to the lowermost ring, the node sets the initial setting packet or call In a configuration that recognizes a packet or route setup packet and sets an address in the drop address table using an initial setup packet, call packet, or route setup packet, one or both of the initial setup packet, call packet, or route setup packet Record the source address of the packet in the drop address table The packet is sent to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet, and the normal packet other than the call has one or an ADD address table corresponding to the ring transmission line, and the source address or destination If the selected ring transmission path is written corresponding to the address, or if the source address or the destination address is written corresponding to the selected ring transmission path, the ring transmission path name is set to the ADD destination ring transmission path of the packet. Write to the selected bit area and send it to the ring transmission line. If it is not written or if there is no table, send it to the ring transmission line indicated by the low-order specific bit of the source address or destination address of the packet. , One or ring transmission line compatible If the ADD destination ring transmission path corresponding to the source address of the packet is written in the drop address table of the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path On the other hand, in a node configuration in which the node cannot identify the initial setting packet, the calling packet, the route setting packet, and the drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to the ring transmission line. If the selected ring transmission path is written corresponding to the source address or the destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the ring transmission path is left as it is. Name of the packet Write to the DD destination ring transmission line selection bit area, send it to the ring transmission line, and if there is no table there, or if there is no writing, search the drop address table corresponding to one or ring transmission line, If there is no address corresponding to the source address of the packet, the source address is written in the drop address table corresponding to one or both ring transmission paths, and in that case, the selected destination ring transmission path. Is not written, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table The name of the ring transmission path is the packet ADD destination ring transmission path selection. The packet that is written in the bit area, sent to the ring transmission path, and transferred on the ring is the address of one drop address table in which only the drop address is written or the drop address corresponding to the ring input to the node of the packet If the address of the drop address table in which the address is written matches the destination address of the packet, DROP, if not, pass as it is, and the multi-round bit area of the packet transferred by the ADD node or multi-round bit grant node If a node connected to the upper ring determines that there is no destination even if it makes a round on the ring by attaching a bit, it goes up to the upper ring at that node, and at that time the multi-round bit of the packet is dropped. Yes, on top ring in top skewered ring If there is no destination even after one round, the packet is converted to a copy packet, copied at the connection ring node that moves to the adjacent ring, and then moved to the adjacent ring. At that time, the copy bit of the packet is dropped and raised to the ring. The copy packet that has made one round in each ring is discarded, and if there is no destination in the adjacent ring, a multi-round bit is added, and then the connection ring node that moves to the adjacent ring moves to the adjacent ring. Is a packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation.

  The present invention transfers a packet having a source address and a destination address under each of a plurality of rings of a ring network in which many ring networks that transfer packets having a source address and a destination address are connected in a skewered manner. A multi-stage ring tree network is a complex network in which ring networks are connected in the form of a tree, and one double ring network of this network has a drop address written to each node on the ring. Either a single drop address table or a drop address table with the same drop address written for a ring transmission path, or a ring transmission path that is automatically selected when steering or setting the shortest path for one or a ring transmission path Corresponding source address or destination address is set. In addition, when a transmission line failure or node failure occurs, a transmission line loopback is performed at the nodes on both sides of the failure location or a transmission line loopback is performed at the nodes on both sides of the failure node. A double ring network consisting of a 0 system and a 1 system, and the edge node device, distribution service company, distribution service device, or broadcasting station accommodated in this network has a destination address of all 0, This is a configuration in which a single path setting copy packet having only an address is copied to each ring up to a skewed multiple ring network once and periodically, and then the source address is written to the drop address table at the entrance of each ring. A single route setup copy packet that goes up to the skewered multiple ring Is not copied, it is copied at the node connected to the tree-like network under each ring and the node moved to the adjacent ring, moved to the adjacent ring, further copied at the node moved to the adjacent ring, moved to the adjacent ring, and 1 for each ring. The routed one-path setting copy packet is discarded, and the one-path setting copy packet copied in the top ring of each tree network is copied to the subordinate ring and copied to all nodes on the ring in each ring. However, the source address is written in the drop address table at the entrance of each ring, and the one-path setting copy packet that makes a round of each ring is discarded. A transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged and transmitted When the packet of the transmission path goes up to the ADD destination disconnection ring, or in the lower tree network, a packet dropped from the clockwise ring and a counterclockwise ring between the upper ring and the lower ring When there is a transmission path in which DROP packets are merged and transmitted, and the packet of that transmission path rises to the upper ring or lower ring of the ADD destination, or when the packet rises to the lowest ring, the node In a configuration that recognizes an initial setting packet, a call packet, or a route setting packet and sets an address in the drop address table by the initial setting packet, the calling packet, or the route setting packet, the initial setting packet, the calling packet, or the route setting packet That packet in one or both drop address tables The source address is recorded and sent to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet, and there is one or more ADD address table corresponding to the ring transmission line for the normal packet other than the call. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is assigned to the packet. Ring transmission path indicated by lower specific bit of source address or destination address of packet when writing to ADD destination ring transmission path selection bit area, sending to that ring transmission path, and when not writing or when there is no table On the other hand, one Alternatively, when the ADD destination ring transmission path corresponding to the source address of the packet is written in the drop address table corresponding to the ring transmission path, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, In a node configuration that sends to a ring transmission line, while the node cannot identify an initial setting packet, a call packet, a route setting packet, and a drop address table setting packet, all packets to be ADDed are one or ring transmission line compatible If there is an ADD address table and the selection ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selection ring transmission path That phosphorus Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path. If there is no table or there is no table, one or a ring transmission path When the drop address table is searched and there is no address corresponding to the source address of the packet, the source address is written in the drop address table corresponding to one or both ring transmission paths, and if and when written If the selected destination ring transmission path is not written, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and the ADD destination ring transmission corresponding to the source address of the packet in the drop address table If the path name is written, the ring transmission path name is A packet that is written in the DD destination ring transmission path selection bit area, sent to the ring transmission path, and transferred on the ring is input to the address of one drop address table in which only the drop address is written or to the node of the packet. If the address of the drop address table in which only the ring-corresponding drop address is written matches the destination address of the packet, DROP, if not, pass as it is, and many packets transferred by the ADD node or multi-round bit grant node If a node connected to the upper ring determines that there is no destination even if it makes one round on the ring by attaching a multi-round bit to the round bit area, it goes up to the upper ring at that node. The lap bit is dropped, and the top skewer If there is no destination even after making a round on the ring, it is converted to a copy packet, copied at the connected ring node that moves to the adjacent ring, and then moved to the adjacent ring. At that time, the copy bit of the packet is dropped to the ring. The copy packet that goes round in each original ring is discarded, and if there is no destination in the adjacent ring, the multi-round bit is added, and the connection ring node that moves to the adjacent ring moves to the adjacent ring. This is a packet transfer method in a double ring network that performs MAC operation type 1 flow operation or MAC operation type path operation.

  The present invention is applied to a multi-stage ring tree network in which ring networks for transferring packets having a source address and a destination address are connected in a tree shape, and each node on the ring has a single drop address written with a drop address. Either the address table or only the drop address table with the same drop address written for the ring transmission path, or one source address corresponding to the ring transmission path is automatically selected when steering or setting the shortest path for the ring transmission path Or, it has a configuration including an ADD address table in which a destination address is set, and when a transmission line failure or node failure occurs, a node on both sides of the failure point causes a transmission line loopback or a node on both sides of the failure node. 0 system 1 system loops back on transmission line A router, a server, an edge node, a MAC, and an IP conversion device accommodated in this network, each of which has a destination address of 0 and a single path setting packet having only a source address. It is configured to raise the top ring once and periodically and write the source address to the drop address table of the ring edge. Between the upper ring and the lower ring, the packet dropped from the clockwise ring and the counterclockwise ring If there is a transmission path on which DROP packets are merged and transmitted, and the packet of that transmission path rises to the upper ring or lower ring of the ADD destination, or the packet rises to the lowest ring, the node is initially Recognize setup packet, call packet, or route setup packet, and In the configuration in which the address of the pop-up address table is set by the initial setting packet, the calling packet, or the routing packet, the initial setting packet, the calling packet, or the routing packet is stored in one or both drop address tables. Record the source address, send it to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet, and there is one normal packet other than the call or the ADD address table corresponding to the ring transmission line, If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is packetized. of Ring transmission path indicated by lower specific bit of source address or destination address of packet when writing to ADD destination ring transmission path selection bit area, sending to that ring transmission path, and when not writing or when there is no table On the other hand, when the ADD destination ring transmission path corresponding to the source address of the packet is written in one or the drop address table corresponding to the ring transmission path, the ring transmission path name is changed to the ADD destination ring transmission path of the packet. In the node configuration in which the selected bit area is written and sent to the ring transmission path, while the node cannot identify the initial setting packet or the call packet or the path setting packet and the drop address table setting packet, all packets to be ADDed are: ADD add for one or ring transmission line If there is a stable and the selection ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selection ring transmission path, Write the ring transmission path name in the ADD destination ring transmission path selection bit area of the packet, and send it to the ring transmission path. If there is no table or there is no table, one or one ring transmission path is supported. If there is no address corresponding to the source address of the packet, the source address is written in the drop address table corresponding to one or both ring transmission paths, and then written. If the destination ring transmission path is not written , If the ADD destination ring transmission path name corresponding to the source address of the packet is written in the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, the name of the ring transmission path Is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and the packet transferred on the ring is the address of one drop address table in which only the drop address is written or the node of the packet If the address of the drop address table in which only the ring-corresponding drop address input to the packet matches the destination address of the packet, DROP, if not, pass as it is, and transfer at the ADD node or multi-round bit grant node Pake When the first node of two nodes connected to the upper ring determines that there is no destination even if it makes a round on the ring by setting a multi-round bit in the multi-round bit area of the network At that node, it goes up to the upper ring. At that time, the multi-round bit of the packet is discarded, and if there is no destination even if it goes around the ring in the uppermost ring, it is sent to the existing Internet network. Yes, the node connecting between the upper and lower rings allows all packets input to the node to pass through when the inter-ring connection transmission path of the node fails or when the node of the transmission path destination fails. This is a packet transfer method in a double ring network in which an operation type 1 flow operation or a MAC operation type path operation is performed.

  In the present invention, a mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape, and the ring passes through the mesh network. Applied to a network with a structure that connects to the mesh network ring above the top ring of other multi-stage ring tree networks, one double ring network, each node on the ring has a drop address written Have only one drop address table or drop address table with the same drop address written for ring transmission path, or select ring transmission path automatically when steering or setting shortest path for one or ring transmission path ADD address test to which the source address or destination address is set In case of transmission line failure or node failure, transmission line loopback at nodes on both sides of the failure location or transmission line loopback at nodes on both sides of the failure node. The mesh network ring immediately above the uppermost ring is connected to the mesh network, and the router, server, edge node, MAC, IP converter accommodated in this network is its own. One-route setting packet with destination address all 0 and only source address is once and periodically raised to the mesh network ring above the top ring, converted into a copy packet, circulated and copied at each node The packet is converted into a packet with copy bits and multi-turn bits and sent to the mesh network. After the source address of the packet is written in the drop address table at the group ADD node, the packet with the copy bit and the multi-turn bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded. In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged and transmitted. When the packet of the transmission path goes up to the ADD destination upper ring or lower ring, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the path setting packet, Set the address of the drop address table to the initial setting packet, call packet or In a configuration in which a route setup packet is used, an initial setup packet, a call packet, or a route setup packet records the source address of the packet in one or both drop address tables, and is subordinate to the source address or destination address of the packet. A normal packet other than a call that is sent to the ring transmission line corresponding to the specific bit has one or an ADD address table corresponding to the ring transmission line, and the selected ring transmission line is written corresponding to the source address or the destination address. If there is a source address or destination address corresponding to the selected ring transmission path, write the ring transmission path name in the ADD destination ring transmission path selection bit area of the packet and transmit the ring transmission. Sent to the road and written If there is no such table and there is no such table, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the source of the packet is stored in one or a drop address table corresponding to the ring transmission path. If an address-capable ADD destination ring transmission path is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path, while the node is initialized. In a node configuration in which a packet, a call packet, a route setting packet, and a drop address table setting packet cannot be identified, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path, and a source address or a destination address Correspondence If the selected ring transmission path is written, or if the source address or destination address is written corresponding to the selected ring transmission path, the ring transmission path name is selected as the ADD destination ring transmission path of the packet. Write to the bit area and send to the ring transmission line. If there is no table, or if there is no table, search the drop address table corresponding to one or the ring transmission line, and the packet source there. If there is no address corresponding to the address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and if and when it is written, the selected ring transmission line is not written. Is the low-order specific bit of the source address or destination address of the packet If the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet. The packet sent to the ring transmission path and transferred on the ring is the address of one drop address table in which only the drop address is written, or the drop address in which only the drop address corresponding to the ring input to the node of the packet is written If the address of the table matches the destination address of the packet, DROP, if not, pass as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit granting node Even if you make a round on the ring When a node connected to the upper ring determines that there is no destination, it goes up to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped. Even if there is no destination, it goes up to the mesh network ring above the highest ring, goes around the mesh network ring and performs DROP if there is a destination, and converts to a copy packet if there is no destination even after one round. The packet copied at each node is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network, and the source address of the packet is stored in the drop address table at the mesh network ring ADD node. After the packet is written, the packet with the copy bit and multi-round bit is discarded and the source mesh network link is discarded. Copy packets around the is configured to discard a packet transfer method in the dual ring network which operates MAC operation form 1 flow operations or MAC operation type path, characterized in that.

  In the present invention, a mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape, and the ring passes through the mesh network. Applied to a network with a structure that connects to the mesh network ring above the top ring of other multi-stage ring tree networks, one double ring network, each node on the ring has a drop address written Have only one drop address table or drop address table with the same drop address written for ring transmission path, or select ring transmission path automatically when steering or setting shortest path for one or ring transmission path ADD address test to which the source address or destination address is set In case of transmission line failure or node failure, transmission line loopback at nodes on both sides of the failure location or transmission line loopback at nodes on both sides of the failure node. A single-ring setup in which each edge node device, distribution service company, distribution service device or broadcasting station accommodated in this network has a destination address of all 0 and only a source address. The copy packet is once and periodically raised to the mesh network ring above the highest ring, and the one-path setting copy packet copied by the mesh network ring is sent to the mesh network and dropped by the mesh network ring ADD node on the receiving side. After writing the source address of the packet in the address table, go around the ring, This is a configuration that does not copy at the node connected to the network, but copies it at the lower ring network connection node and distributes it to the subordinate ring. The packet that has made one round is discarded, and the one-path setting copy packet copied at each ring is subordinate. Is copied to each ring, copied by all nodes on each ring, writes the source address to the drop address table at the entrance of each ring, and discards the one-path setting copy packet that goes around each ring. In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged and transmitted. When the packet goes up to the ADD destination upper or lower ring, or when the packet goes up to the lowest ring In the configuration in which the node recognizes the initial setting packet, the calling packet, or the route setting packet and sets the address of the drop address table by the initial setting packet, the calling packet, or the route setting packet, the initial setting packet or the calling packet Alternatively, the route setup packet records the source address of the packet in one or both drop address tables, and sends it to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet. A normal packet has one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or the destination address. If the destination address is written, write the ring transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path. If it is not written or there is no table Is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring transmission path corresponding to the source address of the packet is in the drop address table corresponding to one or the ring transmission path. If so, the name of the ring transmission path is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path, while the node is the initial setting packet, call packet, or path setting packet. And drop address table setting packet cannot be identified In the node configuration, every ADD packet has one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or the destination address, or is selected. If the source address or destination address is written for the ring transmission path, the name of the ring transmission path is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no table or it is not written there, a drop address table corresponding to one or ring transmission path is searched. If there is no address corresponding to the source address of the packet, one or both ring transmissions are performed. The source address in the drop address table corresponding to the route If the selected destination ring transmission path is not written, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet and stored in the drop address table. If the ADD destination ring transmission path name corresponding to the source address of the packet is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, and sent to the ring transmission path. For the packet to be transferred, the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the ring-compatible drop address input to the node of the packet matches the destination address of the packet If you want to DROP If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or the multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring. If it is judged by a node, it goes up to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped. Go up to the mesh network ring above the upper ring, wrap around the mesh network ring and perform DROP if there is a destination. If there is no destination even after going around, it is converted to a copy packet and circulated and copied at each node The packet is converted into a packet having copy bits and multi-turn bits and sent to the mesh network. After the source address of the packet is written in the pop-up address table, the packet with the copy bit and multi-turn bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded. A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation.

  In the present invention, a mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape, and the ring passes through the mesh network. Applied to a network with a structure that connects to the mesh network ring above the top ring of other multi-stage ring tree networks, one double ring network, each node on the ring has a drop address written Have only one drop address table or drop address table with the same drop address written for ring transmission path, or select ring transmission path automatically when steering or setting shortest path for one or ring transmission path ADD address test to which the source address or destination address is set In case of transmission line failure or node failure, transmission line loopback at nodes on both sides of the failure location or transmission line loopback at nodes on both sides of the failure node. A router, a server, an edge node, a MAC, or an IP conversion device accommodated in this network is a single-route setting packet having a destination address of all 0 and having only a source address. Once again, periodically go up to the mesh network ring above the highest ring, convert it into a copy packet, circulate, and copy the packet copied at each node into a packet with copy bits and multi-turn bits and send it to the mesh network The source address of the packet is added to the drop address table at the ring ADD node for the mesh network on the receiving side. After the data is written, the packet with the copy bit and the multi-round bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded. Between the upper ring and the lower ring, there is a transmission path in which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together, and the packet of the transmission path is the upper ring or ADD destination packet. When going up to the lower ring, or when the packet goes up to the lowest ring, the node recognizes the initialization packet, the call packet or the routing packet, and sets the address of the drop address table as the initialization packet or In configurations that use call packets or route setup packets, the initial setup packet or call packet The packet or route setting packet records the source address of the packet in one or both drop address tables, and sends it to the ring transmission line corresponding to the low-order specific bit of the source address or destination address of the packet. Other normal packets have one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or the destination address, or the source corresponding to the selected ring transmission path If the address or destination address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. The source address of the packet Or, when the ADD destination ring transmission path corresponding to the source address of the packet is written in the drop address table corresponding to one or the ring transmission path, it is sent to the ring transmission path indicated by the lower specific bit of the destination address. The ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path, while the node sends an initial setting packet, a call packet, a path setting packet, and a drop address table setting packet. In a node configuration that cannot be identified, all ADD packets have an ADD address table corresponding to one or ring transmission path, and a selected ring transmission path is written corresponding to a source address or destination address, or Select ring transmission line compatible When the source address or the destination address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet as it is, and sent to the ring transmission path. If there is no address, the drop address table corresponding to one or the ring transmission path is searched. If there is no address corresponding to the source address of the packet, the drop corresponding to one or both ring transmission paths is performed. If the source address is written in the address table, and if and when it is written, and the selection destination ring transmission path is not written, it is written in the ring transmission path indicated by the lower specific bit of the packet source address or destination address. Send and drop packet source to address table If the ADD destination ring transmission path name corresponding to the address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and transferred on the ring If the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the ring-corresponding drop address input to the node of the packet matches the destination address of the packet , DROP, pass if there is none, and set the multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit grant node, so that there is no destination even if it makes one round on the ring Of the two nodes connected to the ring, the first node If it is disconnected, the node goes up to the upper ring. At that time, the multi-round bit of the packet is dropped, and if there is no destination even if it goes around the ring in the highest ring, Go up to the upper mesh network ring. If there is a destination around the mesh network ring, DROP. If there is no destination even after one round, it is converted to a copy packet and circulated. Packets sent out and copied at each node are sent to the mesh network, the copy bit of the copy packet is seen at the ring ADD node for the mesh side on the receiving side, the source address of the packet is written in the source address table and discarded. In this configuration, copy packets that make a round of the source mesh network ring are discarded, and the upper and lower rings are connected. A MAC operation type 1 flow operation or MAC operation characterized in that a node allows all packets input to the node to pass through when a failure occurs in an inter-ring connection transmission path of the node or a node failure of the transmission path destination. This is a packet transfer method in a double ring network that operates in a form path.

  In the present invention, a mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape, and the ring passes through the mesh network. Applied to a network with a structure that connects to the mesh network ring above the top ring of other multi-stage ring tree networks, one double ring network, each node on the ring has a drop address written Have only one drop address table or drop address table with the same drop address written for ring transmission path, or select ring transmission path automatically when steering or setting shortest path for one or ring transmission path ADD address test to which the source address or destination address is set In case of transmission line failure or node failure, transmission line loopback at nodes on both sides of the failure location or transmission line loopback at nodes on both sides of the failure node. A router, a server, an edge node, a MAC, or an IP conversion device accommodated in this network is a single-route setting packet having a destination address of all 0 and having only a source address. Once again, periodically go up to the mesh network ring above the highest ring, convert it into a copy packet, circulate, and copy the packet copied at each node into a packet with copy bits and multi-turn bits and send it to the mesh network The source address of the packet is added to the drop address table at the ring ADD node for the mesh network on the receiving side. After the data is written, the packet with the copy bit and the multi-round bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded. Between the upper ring and the lower ring, there is a transmission path in which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together, and the packet of the transmission path is the upper ring or ADD destination packet. When going up to the lower ring, or when the packet goes up to the lowest ring, the node recognizes the initialization packet, the call packet or the routing packet, and sets the address of the drop address table as the initialization packet or In configurations that use call packets or route setup packets, the initial setup packet or call packet The packet or route setting packet records the source address of the packet in one or both drop address tables, and sends it to the ring transmission line corresponding to the low-order specific bit of the source address or destination address of the packet. Other normal packets have one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or the destination address, or the source corresponding to the selected ring transmission path If the address or destination address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. The source address of the packet Or, when the ADD destination ring transmission path corresponding to the source address of the packet is written in the drop address table corresponding to one or the ring transmission path, it is sent to the ring transmission path indicated by the lower specific bit of the destination address. The ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path, while the node sends an initial setting packet, a call packet, a path setting packet, and a drop address table setting packet. In a node configuration that cannot be identified, all ADD packets have an ADD address table corresponding to one or ring transmission path, and a selected ring transmission path is written corresponding to a source address or destination address, or Select ring transmission line compatible When the source address or the destination address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet as it is, and sent to the ring transmission path. If there is no address, the drop address table corresponding to one or the ring transmission path is searched. If there is no address corresponding to the source address of the packet, the drop corresponding to one or both ring transmission paths is performed. If the source address is written in the address table, and if and when it is written, and the selection destination ring transmission path is not written, it is written in the ring transmission path indicated by the lower specific bit of the packet source address or destination address. Send and drop packet source to address table If the ADD destination ring transmission path name corresponding to the address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and transferred on the ring If the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the ring-corresponding drop address input to the node of the packet matches the destination address of the packet , DROP, pass if there is none, and set the multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit grant node, so that there is no destination even if it makes one round on the ring Of the two nodes connected to the ring, the first node If it is disconnected, the node goes up to the upper ring. At that time, the multi-round bit of the packet is dropped, and if there is no destination even if it goes around the ring in the highest ring, Go up to the upper mesh network ring and go around the mesh network ring and DROP if there is a destination. If there is no destination even after going around, it is converted into a copy packet and circulated, and the packet copied at each node is copied. The packet is also converted to a packet having a bit and a multi-round bit, sent to the mesh network, and the source address of the packet is written to the drop address table at the mesh network ring ADD node. The attached packet is discarded, and the copy packet that goes around the mesh ring of the transmission source is discarded. A MAC operation type characterized in that a node connecting between upper and lower rings allows all packets input to the node to pass through when a node-to-ring connection transmission line failure of the node or a node failure of the transmission line destination This is a packet transfer method in a double ring network that performs path operation.

  In the present invention, a mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape, and the ring passes through the mesh network. Applied to a network with a structure that connects to the mesh network ring above the top ring of other multi-stage ring tree networks, one double ring network, each node on the ring has a drop address written Have only one drop address table or drop address table with the same drop address written for ring transmission path, or select ring transmission path automatically when steering or setting shortest path for one or ring transmission path ADD address test to which the source address or destination address is set In case of transmission line failure or node failure, transmission line loopback at nodes on both sides of the failure location or transmission line loopback at nodes on both sides of the failure node. A router, a server, an edge node, a MAC, or an IP conversion device accommodated in this network is a single-route setting packet having a destination address of all 0 and having only a source address. Once again, periodically go up to the mesh network ring above the highest ring, convert it into a copy packet, circulate, and copy the packet copied at each node into a packet with copy bits and multi-turn bits and send it to the mesh network The source address of the packet is added to the drop address table at the ring ADD node for the mesh network on the receiving side. After the data is written, the packet with the copy bit and the multi-round bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded. Between the upper ring and the lower ring, there is a transmission path in which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together, and the packet of the transmission path is the upper ring or ADD destination packet. When going up to the lower ring, or when the packet goes up to the lowest ring, the node recognizes the initialization packet, the call packet or the routing packet, and sets the address of the drop address table as the initialization packet or In configurations that use call packets or route setup packets, the initial setup packet or call packet The packet or route setting packet records the source address of the packet in one or both drop address tables, and sends it to the ring transmission line corresponding to the low-order specific bit of the source address or destination address of the packet. Other normal packets have one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or the destination address, or the source corresponding to the selected ring transmission path If the address or destination address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. The source address of the packet Or, when the ADD destination ring transmission path corresponding to the source address of the packet is written in the drop address table corresponding to one or the ring transmission path, it is sent to the ring transmission path indicated by the lower specific bit of the destination address. The ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path, while the node sends an initial setting packet, a call packet, a path setting packet, and a drop address table setting packet. In a node configuration that cannot be identified, all ADD packets have an ADD address table corresponding to one or ring transmission path, and a selected ring transmission path is written corresponding to a source address or destination address, or Select ring transmission line compatible When the source address or the destination address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet as it is, and sent to the ring transmission path. If there is no address, the drop address table corresponding to one or the ring transmission path is searched. If there is no address corresponding to the source address of the packet, the drop corresponding to one or both ring transmission paths is performed. If the source address is written in the address table, and if and when it is written, and the selection destination ring transmission path is not written, it is written in the ring transmission path indicated by the lower specific bit of the packet source address or destination address. Send and drop packet source to address table If the ADD destination ring transmission path name corresponding to the address is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and transferred on the ring If the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the ring-corresponding drop address input to the node of the packet matches the destination address of the packet , DROP, pass if there is none, and set the multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit grant node, so that there is no destination even if it makes one round on the ring Of the two nodes connected to the ring, the first node If it is disconnected, the node goes up to the upper ring. At that time, the multi-round bit of the packet is dropped, and if there is no destination even if it goes around the ring in the highest ring, Go to the upper mesh network ring, and if there is a destination around the mesh network ring, DROP, if there is no destination even after going around, it is converted to a multi-copy packet and circulated, and the packet copied at each node is It is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network. After the source address of the packet is written in the drop address table at the ring ADD node for the mesh side on the receiving side, the ring is circulated and meshed. Do not copy at the network connection node, copy at the lower ring network connection node, and add the copy bit and multi-round bit The copy packet that goes around the source mesh ring is copied to the lower most ring and then discarded. The node that connects the upper and lower rings is the ring of that node. When a failure occurs in an inter-connection transmission path or a node failure in the transmission path destination, all packets input to that node are allowed to pass through. It is a packet transfer method in a network.

  In the present invention, a mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape, and the ring passes through the mesh network. Applied to a network with a structure that connects to the mesh network ring above the top ring of other multi-stage ring tree networks, one double ring network, each node on the ring has a drop address written Have only one drop address table or drop address table with the same drop address written for ring transmission path, or select ring transmission path automatically when steering or setting shortest path for one or ring transmission path ADD address test to which the source address or destination address is set In case of transmission line failure or node failure, transmission line loopback at nodes on both sides of the failure location or transmission line loopback at nodes on both sides of the failure node. A single-ring setup in which each edge node device, distribution service company, distribution service device or broadcasting station accommodated in this network has a destination address of all 0 and only a source address. The copy packet is once and periodically raised to the mesh network ring above the highest ring, and the one-path setting copy packet copied by the mesh network ring is sent to the mesh network and dropped by the mesh network ring ADD node on the receiving side. After writing the source address of the packet in the address table, go around the ring, This is a configuration that does not copy at the node connected to the network, but copies it at the lower ring network connection node and distributes it to the subordinate ring. The packet that has made one round is discarded, and the one-path setting copy packet copied at each ring is subordinate. Is copied to each ring, copied by all nodes on each ring, writes the source address to the drop address table at the entrance of each ring, and discards the one-path setting copy packet that goes around each ring. In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged and transmitted. When the packet goes up to the ADD destination upper or lower ring, or when the packet goes up to the lowest ring In the configuration in which the node recognizes the initial setting packet, the calling packet, or the route setting packet and sets the address of the drop address table by the initial setting packet, the calling packet, or the route setting packet, the initial setting packet or the calling packet Alternatively, the route setup packet records the source address of the packet in one or both drop address tables, and sends it to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet. A normal packet has one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or the destination address. If the destination address is written, write the ring transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path. If it is not written or there is no table Is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring transmission path corresponding to the source address of the packet is in the drop address table corresponding to one or the ring transmission path. If so, the name of the ring transmission path is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path, while the node is the initial setting packet, call packet, or path setting packet. And drop address table setting packet cannot be identified In the node configuration, every ADD packet has one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or the destination address, or is selected. If the source address or destination address is written for the ring transmission path, the name of the ring transmission path is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no table or it is not written there, a drop address table corresponding to one or ring transmission path is searched. If there is no address corresponding to the source address of the packet, one or both ring transmissions are performed. The source address in the drop address table corresponding to the route If the selected destination ring transmission path is not written, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet and stored in the drop address table. If the ADD destination ring transmission path name corresponding to the source address of the packet is written, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, and sent to the ring transmission path. For the packet to be transferred, the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the ring-compatible drop address input to the node of the packet matches the destination address of the packet If you want to DROP If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or the multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring Of the two nodes, when judged by the first node, it rises to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped. If there is no destination, it goes up to the mesh network ring on the top ring, goes around the mesh network ring and DROPs if there is a destination. The packet that is circulated and copied at each node is converted into a packet that also has a copy bit and multi-circulation bit, sent to the mesh network, and the mesh on the receiving side After the source address of the packet is written in the drop address table in the ring ADD node, the ring circulates and is not copied in the mesh network connection node, but is copied in the lower ring network connection node. Packets with multi-round bits are discarded, and copy packets that have made a round around the source mesh ring are copied to the lower most ring and then discarded. MAC operation type 1 flow operation or MAC operation type path characterized in that, when a failure occurs in a transmission line between the rings of the node or when a node failure occurs at the destination of the transmission line, all packets input to the node are passed through. This is a packet transfer method in an operating double ring network.

  In the present invention, a mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape, and the ring passes through the mesh network. Applied to a network with a structure that connects to the mesh network ring above the top ring of other multi-stage ring tree networks, one double ring network, each node on the ring has a drop address written It has a configuration with one drop address table or a drop address table in which the same drop address is written corresponding to a ring transmission line. If a transmission line failure or node failure occurs, a transmission line loopback is performed at the nodes on both sides of the failure point. Or a double ring network consisting of a 0 system and a 1 system that loops back the transmission path at the nodes on both sides of the failed node. The drop address table of the node of the mesh network ring has a configuration in which the upper bits of the destination address are embedded in each destination area, and one double ring network has an upper ring and a lower ring, If there is a transmission path in which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged and transmitted, and the packet on that transmission path goes up to the upper ring or lower ring of the ADD destination, or When a packet goes up to the lowest ring, if the upper destination address bit of the packet is not a regional address identifying the tree network, a through bit is set and the source of the packet is stored in the node's drop address table. If there is no intermediate bit string of the address, If there is more than one port, write the intermediate bit string of the source address and its input port, and if there is a single port leaving the ring, simply write the intermediate bit string of the source address to the table, then the packet source address or If the ring transmission path indicated by the bit at the lower specific position of the destination address has an intermediate bit string of the source address of the packet, the ring transmission indicated by the bit at the lower specific position of the source address or destination address of the packet is left as it is. Or to the ring transmission path to be ADD written along with the intermediate bit string of the source address of the table and through to the upper ring, while the upper destination address bits of the packet pass the tree network Region If there is no intermediate bit string of the source address of the packet in one or the corresponding drop address table, the intermediate bit string of the source address of the packet is written to the table and then the intermediate bit string of the source address of the packet If there is a packet that goes around the ring and is sent to the ring output of that node as it is, and a packet that goes around the ring is input to the node, one or the drop address table corresponding to the input ring If there is an intermediate bit string of the destination address of the packet, DROP is performed at that node, otherwise it is passed as it is, and a ring is set by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit granting node. There is no destination even after one round When the node connected to the upper ring is judged, the node goes up to the upper ring, and at that time, the multi-round bit of the packet is dropped. Even if there is no destination, the packet is converted into a copy packet, copied at each node of the ring and dropped, the packet that has made one round is discarded, and the packet with a through bit is placed on the mesh network on the uppermost ring When it reaches the ring, it erases the through bit, circulates on the ring, and if there is a regional destination address, sends it to the mesh network, DROPs at the regional destination node of the ring for the receiving mesh, and DROPs Go around the upper ring, if there is no destination, convert it to a copy packet, copy it at each node, and discard the packet that goes around once Performs the operation, the copied packets around the source mesh network ring discarding a packet transfer method in the dual ring network which operates MAC operation form 1 flows, characterized in that.

  The present invention is applied to a mesh ring network in which a large number of ring networks that transfer packets having a source address and a destination address are connected in a plane, and each node on the ring has a single drop address table in which a drop address is written. Alternatively, it has only a drop address table in which the same drop address is written corresponding to the ring transmission path, or one source address or destination corresponding to the ring transmission path is automatically selected at the time of steering or shortest path setting corresponding to one or the ring transmission path. In addition to the ADD address table in which the Nation address is set, when a transmission line failure or node failure occurs, transmission is performed on the transmission line loopback at the nodes on both sides of the failure location or on both nodes of the failure node. From 0 system 1 system to road loop back Routers, servers, edge nodes, MAC, IP converters accommodated in this network periodically send single-path setup packets that have all destination addresses 0 and only source addresses In this configuration, the source address is written to the drop address table, and a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together between adjacent rings. When a packet of that transmission path goes up to the ADD destination ring, or when a packet from other than the adjacent transmission path goes up to the ring, the node sets the initialization packet, the call packet, or the path. Recognizes the setting packet and sets the address of the drop address table In a configuration that uses an initialization packet, a call packet, or a routing packet, the initialization packet, the calling packet, or the routing packet records the source address of the packet in one or both drop address tables, and the source of the packet A normal packet other than an outgoing call is sent to the ring transmission line corresponding to the lower specific bit of the address or destination address, and there is one or an ADD address table corresponding to the ring transmission line, and it corresponds to the source address or the destination address. When the selected ring transmission path is written, or when the source address or the destination address is written corresponding to the selected ring transmission path, the ring transmission path name is set to the ADD destination ring transmission path selection bit area of the packet. Written in If it is not written or there is no table, it is sent to the ring transmission line indicated by the lower specific bit of the source address or destination address of the packet. Alternatively, when the ADD destination ring transmission path corresponding to the source address of the packet is written in the drop address table corresponding to the ring transmission path, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, In a node configuration that sends to a ring transmission line, while the node cannot identify an initial setting packet, a call packet, a route setting packet, and a drop address table setting packet, all packets to be ADDed are one or ring transmission line compatible There is an ADD address table and the source address Or, if the selected ring transmission path is written corresponding to the destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission line selection bit area, send to that ring transmission line, if there is no table, or if there is not, search the drop address table corresponding to one or the ring transmission line, If there is no address corresponding to the source address of the packet, the source address is written in the drop address table corresponding to one or both ring transmission paths, and in that case, the selected destination ring transmission path. Is not written, the packet source address or When the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring transmission path name is added to the ADD destination ring of the packet. The packet that is written in the transmission path selection bit area, sent to the ring transmission path, and transferred on the ring is the address of one drop address table in which only the drop address is written, or the ring correspondence input to the node of the packet. If the address of the drop address table in which only the drop address is written matches the destination address of the packet, DROP, if it does not exist, pass as it is, if there is no destination, and the circulating packet returns to the ADD node, Of packets to be transferred by the ADD node A multi-round bit is set in the multi-round bit area, further converted into a copy packet, copied to a transmission path having two paths for each ring connected to a plurality of horizontal rings, moved to a horizontal ring, Packets in a double ring network in which a MAC operation type path operation or a MAC operation type 1 flow operation is performed, in which the circulation bit and the copy bit are dropped, the packet goes up to the ring, and the original copy packet that goes around the ring is discarded. It is a transfer method.

  The present invention is applied to a ring network in which a large number of ring networks that transfer packets having a source address and a destination address are connected in a skewered manner, and each node on the ring has a single drop address table in which only a drop address is written. Alternatively, it has only a drop address table in which the same drop address is written corresponding to the ring transmission path, or one source address or destination corresponding to the ring transmission path is automatically selected at the time of steering or shortest path setting corresponding to one or the ring transmission path. In addition to the ADD address table in which the Nation address is set, when a transmission line failure or node failure occurs, transmission is performed on the transmission line loopback at the nodes on both sides of the failure location or on both nodes of the failure node. From the 0 system 1 system that loops back It is a double ring network, and routers, servers, edge nodes, MAC, IP converters accommodated in this network raise one-way setting packets having only their own source addresses once or periodically to the ring, The configuration is such that the source address is written in the drop address table at the entrance of the ring, and a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted between adjacent rings. When there is a path and the packet of the transmission path goes up to the ADD destination ring, or when a packet from other than the adjacent transmission path goes up to the ring, the node sets the initial setting packet, the calling packet, or the path setting packet. Recognize the drop address table address setting and initial setting packet Or, in a configuration that uses a call packet or a routing packet, the initialization packet, the calling packet, or the routing packet records the source address of the packet in one or both drop address tables, and the packet source address or A normal packet other than the outgoing call is sent to the ring transmission line corresponding to the lower specific bit of the destination address, and there is an ADD address table corresponding to one or the ring transmission line, and it is selected according to the source address or the destination address. If the transmission path is written, or if the source address or destination address is written for the selected ring transmission path, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet. And that phosphorus If it is not written and there is no table, it is sent to the ring transmission line indicated by the lower specific bit of the source address or destination address of the packet. If the ADD destination ring transmission path corresponding to the source address of the packet is written in the drop address table of the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path On the other hand, in a node configuration in which the node cannot identify the initial setting packet, the calling packet, the route setting packet, and the drop address table setting packet, there is one ADD address table corresponding to the ring transmission line for all ADD packets. , Source address or destine to it If the selected ring transmission path is written corresponding to the selected address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is directly used as the ADD destination of the packet. Write to the ring transmission path selection bit area and send it to the ring transmission path. If there is no table, or if there is no table, search the drop address table corresponding to one or the ring transmission path, If there is no address corresponding to the source address of the packet, the source address is written in the drop address table corresponding to one or both ring transmission paths, and in that case, the selected ring transmission path is written. If not, the source or destination address of the packet If the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring transmission path name is indicated as the ADD destination ring transmission path of the packet. The packet that is written in the selected bit area, sent to the ring transmission path, and transferred on the ring is the address of one drop address table in which only the drop address is written, or the drop address corresponding to the ring input to the node of the packet If the address of the drop address table in which only the address is written coincides with the destination address of the packet, DROP is performed. If there is no address, the packet is passed as it is. If there is no destination and the circulating packet returns to the ADD node, the ADD node To the multi-round bit area of the packet A multi-round bit is set and further converted into a copy packet. The copy packet is copied at two nodes for each connection ring that moves to the adjacent ring and then moves to the adjacent ring. At that time, the multi-round bit and copy bit of the packet are dropped. Then, if there is no destination in the adjacent ring, it becomes a multi-round packet, and a copy packet is further copied to the adjacent ring after being copied at two nodes connected to the adjacent ring. This is a packet transfer method in a double ring network in which a MAC operation type path operation or a MAC operation type 1 flow operation is performed, wherein a copy packet that makes a round in each ring is discarded.

  The present invention is applied to a ring network in which a large number of ring networks that transfer packets having a source address and a destination address are connected in a skewered manner, and each node on the ring has a single drop address table in which only a drop address is written. Alternatively, it has only a drop address table in which the same drop address is written corresponding to the ring transmission path, or one source address or destination corresponding to the ring transmission path is automatically selected at the time of steering or shortest path setting corresponding to one or the ring transmission path. In addition to the ADD address table in which the Nation address is set, when a transmission line failure or node failure occurs, transmission is performed on the transmission line loopback at the nodes on both sides of the failure location or on both nodes of the failure node. From the 0 system 1 system that loops back In a dual ring network, an edge node device, a distribution service company, a distribution service device, or a broadcasting station accommodated in this network rings a single path setting copy packet having only its own source address once or periodically. And the source address is written to the drop address table at the entrance of the ring, and the one-path setting copy packet that goes up to the ring is not copied by the node that goes up to the ring, but is subordinate to each node on the ring. Copy and copy at the node that moves to the adjacent ring, move to the adjacent ring, copy at each node on the ring, copy at the node that moves to the adjacent ring, move to the adjacent ring, and 1 at each ring The routed one-way configuration copy packet is discarded, and the adjacent ring Includes a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted and the packet of the transmission path goes up to the ADD destination ring, or is adjacent to When a packet from other than the transmission path goes up the ring, the node recognizes the initial setting packet, the calling packet, or the path setting packet, and sets the address of the drop address table as the initial setting packet, the calling packet, or the path setting packet. In the configuration, the initial setting packet, the calling packet or the routing packet records the source address of the packet in one or both drop address tables and corresponds to the lower specific bit of the source address or destination address of the packet. Send to ring transmission line When a normal packet other than a call has an ADD address table corresponding to one or a ring transmission path, and a selection ring transmission path is written corresponding to a source address or a destination address, or a selective ring transmission When the source address or the destination address is written for the path, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If the table does not exist, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD corresponding to the source address of the packet is stored in one or the drop address table corresponding to the ring transmission path. If the destination ring transmission line is written, The ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path, while the node sends the initial setting packet, the calling packet, the path setting packet, and the drop address table setting packet. In a node configuration that cannot be identified, all ADD packets have an ADD address table corresponding to one or ring transmission path, and a selected ring transmission path is written corresponding to a source address or destination address, or If the source address or the destination address is written for the selected ring transmission path, the ring transmission path name is written as it is in the ADD destination ring transmission path selection bit area of the packet, and sent to the ring transmission path. If the table doesn't exist If there is no address, the drop address table corresponding to one or the ring transmission path is searched. If there is no address corresponding to the source address of the packet, the drop corresponding to one or both ring transmission paths is performed. If the source address is written in the address table, and if and when it is written, and the selection destination ring transmission path is not written, it is written in the ring transmission path indicated by the lower specific bit of the packet source address or destination address. When the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, and the ring transmission path Packets sent to and transferred on the ring are only drop addresses If the address of a single drop address table that contains the address or the address of the drop address table that contains only the ring-compatible drop address entered at the node of the packet matches the destination address of the packet, a DROP is performed. If there is no destination and the circulated packet returns to the ADD node, the multi-circulation bit is set in the multi-circulation bit area of the packet transferred by the ADD node, and further converted into a copy packet. Is copied to the adjacent ring for each connection ring that moves to the adjacent ring, and then moves to the adjacent ring. At that time, the multi-round bit and copy bit of the packet are dropped and moved to the ring. , Make multi-round packets and copy A MAC operation path operation characterized in that a copy packet is copied to a neighboring ring and transferred to an adjacent ring for each connection ring that moves to the adjacent ring, and the copy packet that makes a round in each ring is discarded. Alternatively, it is a packet transfer method in a double ring network in which a MAC operation type 1 flow operation is performed.

  The MAC operation type path operation packet in the packet transfer method of the present invention described above is a packet whose path MAC operation address is the MAC address of the MAC in MAC packet in which the MAC header is added before the IP over MAC packet, or IP A packet that is a global IP address that has the private IP address of the IP over MAC packet in its option area, or a packet whose MAC destination address of the IP over MAC is a common address. A packet that is a MAC address, or a packet whose path MAC operation is two VPI addresses of a double cell header of an ATM cell having a double cell header, or The packet in which the MAC MAC address is the two VPI addresses of the cell header of the ATM cell having another VPI in front of the cell header, or the path MAC operating address is the MAC address of the path ATM cell over MAC packet. be able to.

  In the above packet transfer method of the present invention, the MAC operation type 1-flow operation packet is a packet in which the address for 1-flow MAC operation is the MAC address of the IP over MAC packet, or the address for 1-flow MAC operation is IP over MAC. A packet whose MAC destination address is a common address and whose MAC source address is a single address, a packet which is a MAC of a single packet, a packet whose MAC address of one flow MAC is an ARP packet, or a single flow MAC which operates A packet whose address is the IP address of an IP over MAC packet, or a packet whose address that operates 1 flow MAC is the IP address of an IP packet, or an address that operates 1 flow MAC is ATM ce l-over-packet is the MAC address of the MAC packet, or address operation 1 flow MAC is, can be a two VPI + VCI or two addresses of VCI double cell header of the ATM cell having a double-cell header.

  In the above packet transfer method of the present invention, the MAC operation type 1-flow operation packet is the MAC address of the IP over MAC packet in the lower network, and the address in which the 1-flow MAC operation is performed in the upper network. The packet that is the IP address of the IP over MAC packet, or in the lower network, the address that operates 1 flow MAC is the MAC address of the IP over MAC packet, and in the upper network, the address that operates 1 flow MAC is the IP address of the IP packet Packet.

  According to the present invention, there is provided an apparatus for converting a MAC operation type 1-flow operation IP over MAC packet using a private IP address into an IP over MAC packet that performs a MAC operation type path operation using a global IP address having a private IP address in its option area. The MAC address of the packet transfer method according to the present invention, which does not have the MAC address of the device itself, is used in the IP over MAC of the packet that operates in the MAC operation type path operation, and is used in the IP over MAC packet in which the IP address operates in the MAC operation type 1 flow This is a double ring network using a packet which is a global IP address having a private IP address in its option area.

  According to the present invention, there is provided an apparatus for converting a MAC operation type 1-flow operation IP over MAC packet using a private IP address into an IP over MAC packet that performs a MAC operation type path operation using a global IP address having a private IP address in its option area. The MAC address of the packet transfer method of the present invention, characterized by having the MAC address of the device itself, and the IP over MAC of the packet that operates in the MAC operation type path operation of the packet transfer method of the present invention. This is a double ring network using a packet which is a global IP address having an IP address in its option area.

  At this time, an ARP signal transmission function, an ARP response signal reception function, and an RARP signal reception function can be provided.

  Furthermore, it can have a RARP signal reception function.

  Further, the MAC / IP conversion device that has received the RARP signal from the terminal may return a private IP address corresponding to the MAC address of the terminal that is the corresponding MAC address of the request IP address as the request IP address included in the received RARP signal. it can.

  In the packet transfer method of the present invention described above, for an IP packet connected to an existing network, the destination address of the packet is set as the destination address, and the source address is set as the existing network connection port address of the lowest ring. The packet can be changed to a packet with an IP header added.

  Further, if the destination terminal belongs to the own network among the packets sent to the existing network, the response packet can be sent to the own network.

  Further, the response packet of the packet sent to the existing network is sent to the existing network connection port of the lowest ring, where the packet from which the additional header is removed is sent to the own network, and then communicated through the existing network connection port. Can be.

  Furthermore, as the inter-terminal connection method of the packet transfer method described above, all the lowest ring networks in the network have edge nodes having their own source addresses, and the edge nodes periodically send route setting packets including the source addresses. The terminal has a function to transmit to the highest ring, and the terminal has the source address of the edge node included in the destination terminal for each source address of the connection destination terminal, the source address of the source terminal is set as the source address, and the connection destination terminal includes The header node that has the source address of the edge node to be sent as the destination address, sends a packet containing the source address of the destination terminal in the option area, and the edge node that received the packet instead of the destination address of the packet , The source address of the destination device included in the option area A packet whose destination address is converted to a copy packet, distributed to all subordinate terminals, and a reverse path is set by a response from the receiving terminal whose destination address is the source address of the terminal Can do.

  As an inter-terminal connection method of the packet transfer method according to the present invention, all the lowest ring networks of the network have edge nodes having their own source addresses, and the edge nodes periodically receive route setting packets including the source addresses. It has a function to transmit to the upper ring, and the terminal has the source address of the edge node included in the destination terminal for each source address of the connection destination terminal, the source address of the source terminal is set as the source address, and the connection destination terminal is included It has a header with the source address of the edge node as the destination address, sends a packet containing the source address of the destination terminal in the option area, and the edge node that receives the packet uses the source address as the source address of the edge node. The destination address is an option for the received packet. A packet with a header as the source address of the destination terminal included in the network area is converted into a copy packet and distributed to all subordinate terminals, and the response from the receiving terminal whose destination address is the source address of the terminal When a packet is received, a step of sending a packet in which the destination address of the packet is converted to the source address of the received source terminal to the source terminal and setting a reverse path may be included.

  As an inter-terminal mail transfer method of the packet transfer method of the present invention, all the lowest ring networks of the network have edge nodes having their own source addresses, and the edge nodes periodically receive route setting packets including the source addresses. The terminal has a function to transmit to the highest ring, and the terminal has the source address of the edge node included in the destination terminal for each source address of the connection destination terminal, the source address of the source terminal is set as the source address, and the connection destination terminal includes The edge node that has the header address as the destination address and the destination address of the destination terminal in the option area and the mail data in the payload is sent, and the edge node that received the packet receives the source address Is the source address of the edge node and the destination A packet that does not contain mail data with a header whose source address is the source address of the destination terminal included in the option area of the received packet is converted to a copy packet and distributed to all the subordinate terminals, and the destination address of the copy packet When receiving a response packet from the receiving terminal whose source address is the terminal address, the receiving terminal converts the destination address of the packet including the mail data received from the calling terminal into the source address of the packet received from the receiving terminal. Can be sent to.

  As the inter-terminal connection method or inter-terminal mail transfer method of the packet transfer method of the present invention, the terminal has the source address of the edge node included in the destination terminal for each source address of the connection destination terminal as the owner of the destination terminal. An edge node specific address can be added to the area number of the fixed telephone number.

  In the double ring network of the present invention, the method for assigning the multi-round bit at the ADD node is based on the ADD destination 0 system or 1 system corresponding to the source specific address or the lower specific bit of the destination address of the packet to be ADDed at the ADD node of the packet. When a packet that has a configuration to be added to the ring transmission line and circulates on the ring is input to the ADD node, 0 or 1 of the lower specific bit of the source address or destination address of the packet input by the 0 system 1 system of the ring In the case where it matches 1 and the source address of the packet is in the drop address table corresponding to the ring transmission path, a multi-round bit can be added to the packet.

  In the double ring network of the present invention, the multi-round bit assignment method in the ADD node is such that when the packet has an ADD destination transmission path identification bit and a packet circulating on the ring is input to the ADD node, the ADD of the input packet is added. When the destination transmission path identification bit matches the 0 system 1 system of the ring and the source address of the packet is in the drop address table, a method of adding a multi-round bit to the packet can be used. .

  In the double ring network of the present invention, a multi-round bit is added by a multi-round bit granting node so that the node is ring-corresponding to the low-order specific bit of the source address or the low-order specific bit of the destination address or ADD. A function of giving a multi-round bit only to a packet having a destination ring transmission path selection bit, a function of giving a multi-round bit for discard to other packets, and a total of 2 or 11 multi-round bits, a multi-cycle for discard And a function of discarding a packet having a total of 2 or 11 bits.

  In the present invention, the drop address table has active and spare, the source address of the ADD packet to the ring is written to the drop address table on the active side, and the packet circulating around the ring is stored in the node's current drop address table. If the destination address of the packet is searched first, if there is, drop, if not, search the spare drop address table, if there is, drop, if not, the packet is passed to the ring output for a certain time If there is no hit in the search for the spare drop address table, all the spare drop address table memories are cleared, and the spare drop address table is used as the current one. 2 of the present invention characterized by being reserved A drop address table used in the packet transmission method in the ring network.

  In the present invention, a drop address table having a working and a spare is written in a normal packet ADDed to a node if the source address is not in the drop address table on the working side, and is periodically transmitted from the server, router, or edge node. A one-way setup packet that is ADDed to a node sent to a node is written to an unwritten table if its source address is not written to either or both of the working and spare drop address tables, while the ring Packets that are input to the node from the top are first sent to the destination address or source address periodically by searching the current drop address table, and if not, the spare drop address table is searched. More than a certain time longer than the period of one-way packet If the prepared drop address table does not hit in the search of the packet input from the ring, the spare drop address table memory is cleared and the spare drop address table is used as the current one. The drop address table in the double ring network of the present invention is characterized in that the existing drop address table is reserved.

  In the above-described double ring network of the present invention, the address setting in the ADD address table can be automatically set for steering at the time of loopback.

  In the above-described double ring network of the present invention, a packet with multi-round bits is moved to a higher ring or an adjacent ring. Therefore, when dropping from its own ring, the packet is stored in the drop address table at the exit. You can leave the destination address.

  In the above-described double ring network of the present invention, a packet with a multi-round bit moves to a higher ring or an adjacent ring, and after leaving the source address in the drop address table at the entrance of the ring, the multi-round bit is removed. Then you can go up to the corresponding ring.

  The double ring network of the present invention described above has a drop address when only a packet with a multi-round bit and an initial setting packet or a call packet, a route setting packet, a one-way setting packet, and a calling packet go up to the ring. Looking at the table, normal packets and unknown packets can only see the drop address table except for the drop address table that goes up to the lowest ring.

  In the present invention, the copy bit of the copy packet used in the network is the seventh bit from the beginning of the MAC destination address of the packet having the MAC header or the seventh bit from the beginning of the MAC source address of the packet having the MAC header. It is a packet structure transferred in the double ring network of the present invention, which is a bit.

  According to the present invention, the MAC packet used in the network is the seventh bit from the head of the MAC source address and the MAC destination address and the IP data display bit, the ARP display bit, the RARP display bit, and the VLAN identifier 0X8100 of the type field. In this network, the first bit of the type field or VLAN identifier area, which is a bit excluding the 1 bit, ie, the second, third, fourth, sixth, seventh, ninth and tenth bits from the first bit after the MAC source address. The packet transfer method in the double ring network of the present invention is characterized by being used as a control bit of

  According to the present invention, the MAC packet used in the network is a bit excluding the seventh bit from the head of the MAC source address and the MAC destination address, the IP data display bit of the type field, and 1 bit of 0X8100 which is the VLAN identifier. The first bit of the type field or VLAN identifier area, that is, the first bit after the MAC source address, 2, 3, 4, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16 total 15 A packet transfer method in a double ring network according to the present invention, wherein a bit is used as a control bit in this network.

  The present invention defines an OAM MAC packet with one bit of a type field and an empty bit of a VLAN identifier, creates an OAM field after 16 bits of the type field, and sends a control signal including a CRC to the receiving side. The double ring according to the present invention is characterized in that the node is used as a control signal only when the bits in the area corresponding to the OAM field of the MAC packet are copied and extracted, and after CRC calculation and error correction can be performed. It is a packet transfer method in a network.

  According to the present invention, the MAC packet used in the network includes the seventh bit from the head of the MAC source address and the MAC destination address, and the phone number of the mobile phone terminal and the phone number of the fixed phone in the MAC address of the MAC packet. The packet transfer method in the double ring network according to the present invention is used for identification with a MAC packet in an existing network.

  Furthermore, when converting the telephone number of the mobile phone terminal and the telephone number of the fixed telephone to the MAC address of the MAC packet, a method of converting the decimal number 0 to 9 of the telephone number into a 4-bit binary bit string is provided. Can be used.

  The present invention relates to a node device used in a single or double ring network, and when there are a plurality of ports exiting from the ring, the node device includes a source address of a cell or packet input to the port corresponding to the port or a packet with a cell header. If there is only one port exiting the ring with the corresponding port number, it has a single drop address table in which the source address of the entered cell or packet or packet with cell header is written. The cell or packet to be ADDed or the packet with the cell header is the source address included in the packet header or the packet header of the packet with the call or routing cell header or the packet with the call or routing cell header in the drop address table of the node Otherwise, if there are multiple ports exiting the ring, write that port and its source address, and if there is only one port exiting the ring, write only that source address into the table before calling or routing Ring transmission indicated by the bit in the lower specific position of the source address included in the packet header or packet header of the packet or packet header of the cell payload or call or routing cell header or the destination address included in the packet or packet header of the cell header If there is a source address of the cell or packet or packet with cell header, the source address or destination address of the cell or packet or packet with cell header is left as is. Cell or packet that is sent to the ring transmission path indicated by the bit of this, or sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header, and transferred on the ring input to the node Or, if a packet with a cell header matches the destination address of the cell or packet or packet with a cell header if the address in the drop address table that contains only the drop address matches with the destination address of the cell or packet or packet with a cell header, write the packet with that address. A node device for forwarding a cell or a packet operating in a MAC operation type path or a packet with a cell header, characterized in that if there is only one port exiting from the ring, it is simply DROP and the other ports are passed through Is .

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required source address area or specific source address area has a short bit length, 1 is written in the addressing position of the source address area or specific source address area, or the source address or specific source address area source address and Correspondingly, a cell or packet that has one drop address memory written with 1 and ADDs to the ring of a node or a packet with a cell header is the header or payload of the call or routing cell for the drop address memory of the node. Ma If the bit length of the source address area or specific source address area required for transfer in this ring is short among the source addresses contained in the cell header of a packet with a cell header or the packet header or the header of a single packet, its memory If there is no write data in the source address area or specific source address area addressing position of the source, if there is only one port exiting the ring, the source address area or specific source address area addressing position of the drop address memory is simply After writing 1 or writing its source address or specific source address area source address and corresponding 1 or the source address area or specific source address required for the transfer of this memory in this ring If there is write data at the region addressing position, it is with the source address or cell or cell header included in the cell header or packet header of the packet with the header or payload or cell header of the calling or routing cell or the header of the single packet as it is Send to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the packet or packet header, or to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header For a cell or packet that is sent out and transferred on the ring that is input to the node, or for a packet with a cell header, the bit length of the destination address required for transfer on this ring in the destination address Or, if the bit length of the specific destination address area is short, the specified address where the data of the drop address memory where the drop address is written or the address where the data is written is attached to the cell, packet or cell header If the packet's destination address matches the specific destination address area address or destination address required for forwarding on this ring, the cell or packet or packet with cell header is DROP, otherwise it is passed A node device that forwards a cell or a packet or a packet with a cell header that operates in a MAC operation type path.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required bit length of the source address area is long, the source address of the source address area is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the upper source address or upper specific address The lower source address or lower specific source address is written in the address position specified by the source address, or the upper source address or upper specific is specified in the address position specified by the lower source address or lower specific source address, respectively. If there is one drop address memory in which the source address is written and the write data is in the same address position in the memory, and the data is different from the data to be written, the source address to be written is the one written in the drop address table. A cell or packet or cell header packet that has two drop address tables and ADDs to the ring of the node, for the drop address memory and drop address table of the node, the header or payload of the call or routing cell or the packet with cell header Bit length of source address area or specific source address area required for transfer in this ring among source addresses included in cell header, packet header, or single packet header If there is no write data at the memory addressing location of the upper source address or upper specific source address or lower source address or lower specific source address, if there is only one port leaving the ring, simply drop it. When the bit length of the source address area required for transfer in this ring is long in the address memory, the source address is divided into an upper source address or upper specific source address and lower source address or lower specific source address, and the upper address Write the lower source address or lower specific source address at the address position specified by the source address or upper specific source address, respectively, or write at the address position specified by the lower source address or lower specific source address, respectively. After writing the upper source address or upper specific source address, or there is write data at the memory addressing position specified by the upper source address or upper specific source address, and the data is the lower source address, respectively. Or if it is not a lower specific source address, or if there is write data at the addressing position of the lower source address or lower specific source address and the data is not an upper source address or an upper specific source address, the drop After writing the source address or specific source address to the address table, there is write data at the addressed location in the memory specified by the upper source address or upper specific source address, and When the data is the lower source address or the lower specific source address, respectively, or there is write data at the addressing position of the lower source address or the lower specific source address, and the data is the upper source address or the upper specific address, respectively. If it is a source address, or if the source address or a specific source address is in the drop address table, the cell header or packet header of a call or routing cell header or payload or a packet with a cell header, or a single packet Sent to the ring transmission line indicated by the bit at the lower specific position of the source address or cell or packet with cell header or destination address included in the packet header Or a cell or packet or packet with cell header that is sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or cell header packet and transferred on the ring input to the node is its destination address. Of the destination address area required for transfer on this ring, the data written to the address location specified by the upper destination address or the upper specific destination address is the lower destination address or If the data matches the lower specific destination address, or the data written to the lower destination address or the address location specified by the lower specific destination address is Each cell or packet or packet with a cell header if it matches the higher destination address or higher specific destination address, or if the destination address or the specific destination address is in the drop address table, It is a node device that transfers a cell or a packet or a packet with a cell header that operates in a MAC operation type path, which performs DROP and passes through the others.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required bit length of the source address area is long, the source address of the source address area is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the upper source address or upper specific address The upper source address or upper specific source address and the lower source address or lower specific source address corresponding to the upper source address or upper specific source address and the lower source address or One drop address in which the lower source address or the lower specific source address and the upper source address or the upper specific source address are written in correspondence with the lower source address or the lower specific source address at the address position specified by the higher specific source address or the subsequent address position. A cell or packet or cell header packet that has memory and ADDs to the ring of the node, for the drop address memory of the node, the cell header or packet header or single packet of the call or routing cell header or payload or cell header packet Of the source addresses included in the header, if the bit length of the source address area or specific source address area required for transfer in this ring is long, the upper source address or upper specific source If there is no write data that matches the address or lower source address or lower specific source address in that memory addressing location and any subsequent address locations within a specified range, then if there is only one port out of the ring, the drop When the bit length of the source address area required for transfer in this ring is long in the address memory, the source address is divided into an upper source address or upper specific source address and lower source address or lower specific source address, and the upper address The lower source address or lower specific source corresponding to the upper source address or upper specific source address and the address position specified by the source address or upper specific source address or within the specific range after that, respectively. Write the address, or match the lower source address or the lower specific source address to the address position specified by the lower source address or the lower specific source address, or the address position within the specified range thereafter, and the upper source. After writing the address or upper specific source address, there is write data at the addressed location in the memory specified by the upper source address or upper specific source address or an address within a specific range thereafter, and the data Is the upper source address or upper specific source address and the lower source address or lower specific source address corresponding to each, or within the lower source address or lower specific source address or a specific range thereafter When there is write data at the addressing position of the memory specified by the address, and the data is the lower source address or the lower specific source address and the upper source address or the upper specific source address corresponding to each, The source address included in the cell header or packet header of a packet with a call or routing cell header or payload or cell header or the header of a single packet or the destination address included in the header of a cell or packet with a cell header or packet header Is sent to the ring transmission path indicated by the bit at the lower specific position, or sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or the packet or the packet with the cell header. The cell or packet to be transferred on the ring entered in the packet or the packet with cell header is specified by its higher destination address or higher specific destination address in the destination address area required for transfer on this ring. Is written at the address location within the specified range or the specified address range thereafter, the upper destination address or the upper specified destination address and the lower destination address or the lower specified destination corresponding to the upper destination address or the upper specified destination address respectively. If it matches the address, or within a specific range after the address location specified by the lower destination address or lower specific destination address If the data written at the address location matches the lower destination address or lower specific destination address and the corresponding higher destination address or upper specific destination address, the cell or A packet or a packet with a cell header is a node device that transfers a cell or a packet with a MAC operation path or a packet with a cell header, characterized in that the packet is DROPed and the others are passed through.

  The present invention relates to a gate-type ring node device used in a double ring network, wherein the node device includes the gate ring and the destination gate ring included in the payload of the cell to be ADD input or the header of the packet or the packet header of the packet with the cell header. If the source address for gates required for transfer is long, the 0-system upper address obtained by adding 1 bit which is 0 with the source address as the lower additional bit of the upper source address, or the lower additional bit of the upper source address 1 system upper address with 1 bit added as 1 and 0 system lower address with 1 bit added as 0 as lower additional bit of lower source address, or 1 as lower additional bit of lower source address Divided into 1 system lower address with bit added, 0 system upper address The 0-system upper source address or the 1-system upper source address and the 0-system lower-source address or 1-system lower-source address corresponding to the address position specified by the source address or the 1-system upper source address or the address position after that, respectively. To the address position specified by the 0 system lower source address or the 1 system lower source address or the address position after that, corresponding to the 0 system lower source address or the 1 system lower source address, respectively. 1 cell upper source address or 1 system upper source address as data, and one gate drop address memory to be written, and a cell or packet to be dropped in this ring received from another ring or a packet with a cell header or A cell or packet to be dropped in this ring or a packet with a cell header that has risen from the ADD transmission path of this ring reaches the call control circuit of this ring when there is no destination of the gate source address on the ring, The call control circuit reads the cell from the source address and gate source address of the received packet or packet with cell header into the gate drop address memory of the node ADDed from the originating terminal side of the packet or packet with cell header to the gated ring. Alternatively, after confirming whether there is a source address for the gate of the packet or the packet with the cell header, if there is, when the cell or the packet with the cell header or the packet with the cell header is ADDed to the gated ring on the calling terminal side, the drop address memory for the node Written in A node in which the call control circuit contains the destination terminal to which the cell or packet or packet with cell header should be dropped, with the lower address as data at the address position of the upper address opposite to the upper source address used at the time of writing When writing to the gate drop address memory for the gate, or when ADDing to the gate ring on the originating terminal side, the address of the lower address opposite to the lower source address used for writing to the gate drop address memory of that node The call control circuit writes the higher address into the gate drop address memory for the node containing the destination terminal to which the cell or packet or packet with cell header is to be dropped, one ADD to that node per node Gauge used by terminal for writing A cell or packet having a gate drop address memory shared with the node drop address memory and ADDed to the ring of the node, or a packet with a cell header is the payload or the cell of the call or routing cell for the node drop address memory. As a 0-system upper address obtained by adding 1 bit which is 0 as the lower source bit of the upper source address, and the lower source bit of the upper source address, the gate source address included in the packet header of the packet with cell header or the header of the single packet 1 system upper address with 1 bit added to 1 and 0 system lower address with 1 bit added as 0 as lower additional bit of lower source address, or 1 bit as lower additional bit of lower source address Add It is divided into 1 system lower address, and the originating terminal side uses the 0 system or 1 system upper source address determined to be used for writing to the gate drop address memory of the node of the gated ring to be added. When the memory is read, if there is no 0-system or 1-system upper source address and its corresponding 0-system or 1-system lower source address data corresponding to the address designation position and the address position within a specific range thereafter. After writing the above-mentioned 0-system or 1-system upper source address and the corresponding 0-system or 1-system lower source address as data at the address designation position and the address position within a specific range thereafter, or Drop address memory for the gate of the node of the gated ring where the calling terminal side adds When the memory is read with a lower source address of the 0 system or 1 system that is determined to be used for writing to the 0 system or the address system within the specified range after that address or the 0 system or If there is no 1-system lower source address and the corresponding 0-system or 1-system upper source address data, the above-mentioned 0-system or 1-system lower source address is at the address designation position and the address position within a specific range thereafter. And the corresponding higher-order source address of the 0-system or 1-system is written as data, and then the originating terminal side decides to use it for writing to the gate drop address memory of the node of the gated ring to be ADDed If the memory is read with the upper system address of the 0 system or 1 system If there is a 0-system or 1-system upper source address and a corresponding 0-system or 1-system lower source address data corresponding to the address designated position and the address position within the specified range thereafter, the source terminal side is left as it is. , When the memory is read with a lower source address of the 0 or 1 system that is determined to be used for writing to the gate drop address memory of the node of the gated ring to be ADDed, If there is a 0-system or 1-system lower source address and a corresponding 0-system or 1-system upper source address data that matches the address position within a specific range thereafter, the cell or packet or packet with a cell header is directly received. Send to the corresponding ring transmission line, and on the ring input to the node The cell or packet to be sent or the packet with the cell header is determined by the destination terminal for reading the gate drop address memory of the node of the gated ring to be dropped on the gate drop address memory of the node. When the memory is read with the upper system source address of the 1 system or 0 system that is opposite to the side, the 1 system or 0 system upper source address that matches the address specified position and the address position within the specified range thereafter And if there is corresponding 1-system or 0-system lower source address data, or the destination terminal side is determined to read the gate drop address memory of the node of the gated ring to be dropped on the destination terminal side When the memory is read with the lower source address of 1 system or 0 system of the reverse system If there is a 1-system or 0-system lower source address and a corresponding 1-system or 0-system upper source address data corresponding to the address specified position and the address position within a specific range thereafter, the cell or The packet or packet with a cell header is a gated ring node apparatus that transfers a cell or a packet with a MAC operation type 1 flow operation or a packet with a cell header.

  The present invention relates to a gate-type ring node device used in a double ring network, wherein the node device includes the gate ring and the destination gate ring included in the payload of the cell to be ADD input or the header of the packet or the packet header of the packet with the cell header. If the gate source address required for transfer is long, the source address is divided into a high-order source address and a low-order source address, and the high-order source address is assigned to the address position specified by the high-order source address or a subsequent address position. The lower source address should be written as data corresponding to the address or the lower source address and the upper source address corresponding to the lower source address at the address location specified by the lower source address or the address location after that. It has one auxiliary drop address memory for gate to be written, and it should be dropped on this ring that has risen from the ADD transmission line of this ring or cell or packet to be dropped on this ring or packet with cell header received from the other ring The cell or packet or packet with cell header reaches the call control circuit of this ring when there is no destination of the gate source address on the ring, and the call control circuit receives the source address of the received packet or packet with cell header. And the source address for the gate of the cell or packet or packet with cell header from the source address for the gate to the auxiliary drop address memory for the node ADDed from the originating terminal side of the packet or packet with cell header to the gated ring After checking whether there is a dress, if so, divide the source address into an upper source address and a lower source address, and correspond to the upper source address and the address position specified by the upper source address or the address position after that. Then, the call control circuit writes the lower source address as data to the gate drop address memory for the node containing the destination terminal to which the cell or packet or packet with cell header is to be dropped, or the lower source address. The destination terminal to which the call control circuit should drop the cell or packet or cell header-attached packet with the lower source address and the higher source address as data corresponding to the specified address location or the subsequent address location. Is contained The gate drop address memory for writing to the node's gate drop address memory has one gate drop address memory separately from the gate auxiliary drop address memory used for writing by the ADD terminal to the node, and is added to the node ring. The cell or packet or packet with a cell header is specified by the upper source address by dividing the source address for the gate of the cell or packet or packet with the cell header into an upper source address and a lower source address in the auxiliary drop address memory for the gate of the node. If the corresponding upper source address and the lower source address corresponding to the address location are not written as data, the address location or the address after that After writing the upper source address and the corresponding lower source address as data, or the lower source address that matches the address position specified by the lower source address or the address position after that, and If the upper source address is not written as data corresponding thereto, the lower source address and the corresponding higher source address are written as data at the address location or the subsequent address location, If a matching upper source address and corresponding lower source address are written as data at the address location specified by the upper source address or a subsequent address location, the lower source address is used as it is. Specified in If the matching lower source address and corresponding upper source address are written as data at the address location or the subsequent address location, the ring transmission path corresponding to the cell or packet or packet with cell header as it is The cell or packet or cell header packet transferred on the ring input to the node is transferred to the address position specified by the upper source address or the address position after that for the node drop address memory. If the matching upper source address and the corresponding lower source address are written as data, the lower source address that matches the address location specified by the lower source address or the address location after that is also matched. If the upper source address is written as data, the cell or the packet or the packet with the cell header is dropped at the node, and the others are passed through. It is a gated ring node device that transfers a cell or packet that performs a flow operation or a packet with a cell header.

  The present invention relates to a gate-type ring node device used in a double ring network, wherein the node device includes the gate ring and the destination gate ring included in the payload of the cell to be ADD input or the header of the packet or the packet header of the packet with the cell header. If the gate source address required for transfer is long, the source address should be divided into an upper source address and a lower source address, and the lower source address should be written as data at the address location specified by the upper source address. Or an auxiliary drop address memory for one gate to which the upper source address should be written as data at the address position specified by the lower source address, and the cell or packet or cell to be dropped in this ring received from the other ring A packet or a cell header or a packet with a cell header to be dropped on this ring that has been raised from the ADD transmission line of this ring, and when there is no gate source address destination on the ring, the call control circuit of this ring The call control circuit receives the packet or cell header-attached packet source address and the gate source address from the source terminal of the packet or cell header-attached packet to the gated ring and adds the auxiliary drop for the gate of the node After confirming that the source address for the gate of the cell or packet or packet with cell header exists in the address memory, the source address is divided into an upper source address and a lower source address, and the address position specified by the upper source address In addition, the call control circuit writes the lower source address as data in the gate drop address memory for the node containing the destination terminal to which the cell or packet or packet with cell header is to be dropped, or the lower source address. The call control circuit writes the high-order source address as data in the designated address position in the gate drop address memory for the node in which the destination terminal to which the cell or packet or packet with cell header is to be dropped is stored. A gate drop address memory is provided separately from the gate auxiliary drop address memory used for writing by the ADD terminal to the node, and a cell or packet to be added to the ring of the node or a packet with a cell header is a node gate. For auxiliary drop address memory, the gate source address of a cell or packet or packet with cell header is divided into an upper source address and a lower source address, and the lower source address that matches the address position specified by the upper source address is data If not written, the upper source address that matches the lower source address must be written as data after writing the lower source address as data or at the position specified by the lower source address. For example, after writing the upper source address as data at the address position, if the lower source address that matches the address position specified by the upper source address is written as data, Also that If the high-order source address that matches the address position specified by the high-order source address is written as data, the cell or the packet or the packet with the cell header is sent as it is to the corresponding ring transmission line and input to the node. The cell or packet transferred on the ring or the packet with the cell header has the lower source address that matches the address position specified by the upper source address of the node's gate drop address memory written as data. Or if a matching upper source address is written as data at the address location specified by the lower source address, the cell or packet or packet with a cell header is DROP at that node, otherwise Through It is gated ring node apparatus for transferring cells or packets or cell header with packet that operates MAC operation form 1 flows characterized by.

  The present invention relates to a gated ring node device used in a double ring network, in which the node device includes the gated ring and the destination gated ring included in the packet payload of the cell to be ADD input, the header of the packet, or the packet header of the packet with the cell header. If the source address for gates required for transfer is long, the 0-system upper address obtained by adding 1 bit which is 0 with the source address as the lower additional bit of the upper source address, or the lower additional bit of the upper source address 1 system upper address with 1 bit added as 1 and 0 system lower address with 1 bit added as 0 as lower additional bit of lower source address, or 1 as lower additional bit of lower source address Divided into 1 system lower address with bit added, 0 system upper address The 0-system lower source address or the 1-system lower source address should be written as data at the address position specified by the source address or the 1-system upper source address, or the 0-system lower source address or the 1-system lower source address. Corresponding to each specified address position, it has one gate drop address memory to write the 0 system upper source address or 1 system upper source address as data, and drop in this ring received from other ring A cell or packet with a cell header or a packet with a cell header, or a cell or packet or a cell header with a cell header that should be dropped from this ring's ADD transmission line if there is no gate source address destination on the ring , The call control circuit of the ring of the cell is gated from the source address and gate source address of the received cell or packet or packet with cell header from the source terminal side of the cell or packet or packet with cell header. After confirming that the source address for the gate of the cell or packet or packet with cell header is present in the gate drop address memory of the node ADDed to the ring, if there is, the cell or packet or packet with cell header is the gate type on the source terminal side. When a ADD is made to the ring, the call control circuit uses the cell or packet or the lower address as the lower address at the address position of the upper address opposite to the upper source address used when writing to the gate drop address memory of that node. cell A packet with a header is written to the gate drop address memory for the node in which the destination terminal to be dropped is accommodated, or used when writing to the gate drop address memory of that node when ADDing to the gated ring on the originating terminal side The gate for the node in which the call control circuit stores the destination terminal to which the cell or the packet or the packet with the cell header is to be dropped is stored as the upper address at the address position of the lower address opposite to the lower source address. A cell or packet to be ADDed to the ring of a node, having a gate drop address memory that is shared with a gate drop address memory used for writing by one ADD terminal to the node, writing to the node drop address memory Selhet The attached packet is the node's gate drop address memory, and the gate source address included in the packet header of the packet with the call origination or routing cell or the packet with the cell header or the header of the single packet is used as the lower additional bit of the upper source address. 1-system upper address with 1 bit being 0, or 1-system upper address with 1 bit being 1 as a lower additional bit of the upper source address, and 1 bit being 0 as the lower additional bit of the lower source address Is divided into 0-system lower address with 1 added, or 1-system lower address with 1 bit added as 1 as a lower additional bit of the lower source address, and the source terminal drops the gate for the node of the gated ring to be ADDed Used for writing to address memory If the memory is read at the upper source address of the 0 system or 1 system determined in the above, if there is no data at the address specified position, the corresponding lower system source of the 0 system or 1 system is at the address specified position. 0-system or 1-system lower source address that is determined to be used for writing to the gate drop address memory of the node of the gated ring to be ADDed after the address is written as data When the memory is read in, if there is no data at the address designation position, after writing the corresponding 0-system or 1-system higher source address as data to the address designation position, , Determined to be used for writing to the gate drop address memory of the node of the gated ring to be ADDed When the memory is read with the higher-order source address of the 0-system or 1-system, if there is corresponding lower-system source address data of the 0-system or 1-system that matches the addressing position, the calling terminal side When the memory is read with the lower source address of the 0 system or 1 system, which is determined to be used for writing to the gate drop address memory of the node of the gated ring to be ADDed, If there is a corresponding corresponding 0-system or 1-system higher-order source address data, the cell or packet or the packet with the cell header is sent as it is to the corresponding ring transmission path, and the cell or packet transferred on the ring input to the node or Packets with cell headers are stored in the drop address memory for the gate of the node. The destination terminal reads the memory with the upper source address of the 1 system or 0 system that is the reverse of the originating terminal side that is determined for reading the gate drop address memory of the node of the gated ring to be dropped In this case, if there is corresponding 1-system or 0-system lower source address data that matches the addressing position, or on the destination terminal side for reading the gate drop address memory of the node of the gated ring to be dropped If the memory is read with the lower source address of the 1 system or 0 system that is the reverse of the determined originating terminal side, there should be a corresponding 1 system or 0 system upper source address data that matches the addressing position. For example, the MA or the packet or the packet with the cell header is DROP, and the others are passed through. It is a gated ring node device for transferring the operation form 1 flow operations for cells or packets, or the cell header with the packet.

  In the gated ring node device of the present invention, the gate source address is a bit string obtained by converting the MAC address of a conventional MAC terminal or the numbers 0 to 9 in the decimal representation of the mobile phone terminal number into a 4-bit binary number. It is possible to transfer a cell or packet or a packet with a cell header characterized by

  In the gated ring node device of the present invention, the gate source address is a bit string obtained by converting the MAC address of a conventional MAC terminal or the numbers 0 to 9 in the decimal representation of the mobile phone terminal number into a 4-bit binary number. It is possible to transfer a cell or packet or a packet with a cell header characterized by

  The present invention relates to a node device used in a double ring network, and when there are a plurality of ports exiting from the ring, the node device specifies the source address and port number of a cell or packet input to the port or a packet with a cell header corresponding to the port. Correspondingly, if there is only one port that leaves the ring, two drop addresses with the source address of the entered cell or packet or packet with a cell header written in both drop address tables in the ring A packet that has a table and is ADDed to the ring of a node is included in the packet header or packet header of the packet with the call or routing cell header or the packet with the call or routing cell header in the drop address table of one of the nodes This If there is no source address, if there are multiple ports exiting the ring, the port and its source address are written to the two drop address tables if only one port exits the ring. Later, the source address contained in the packet header or packet header of the packet with the call or routing cell header or the packet header with the call or routing cell header or the destination address contained in the packet or packet header with the cell header If there is a source address of the cell or packet or packet with cell header, the source address of the cell or packet or packet with cell header is sent as it is Ring sent to the ring transmission path indicated by the bit at the lower specific position of the destination address, or sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header, and input to the node If the cell or packet to be transferred above or the packet with cell header is the address of the drop address table corresponding to the input ring transmission line in which only the drop address is written matches the destination address of the cell or packet or packet with cell header A MAC operation type characterized in that when there are a plurality of ports exiting from the ring, the port written with the address is simply DROP if there is only one port exiting from the ring and through otherwise. Cell that passes Or it is a node apparatus which transfers a packet or a packet with a cell header.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required source address area or specific source address area has a short bit length, 1 is written in the addressing position of the source address area or specific source address area, or the source address or specific source address area source address and Correspondingly, a cell or packet that has the same write data corresponding to the ring and that has the same write data corresponding to the ring, and a packet or a packet with a cell header added to the ring of the node is called for the drop address memory of one of the nodes. Or sutra The bit length of the source address area or specific source address area required for transfer in this ring is short among the source addresses contained in the cell header or packet header of a set cell header or payload or packet with a cell header or the header of a single packet. In some cases, if there is no write data at the addressed location of the source address area or a specific source address area of the memory, if there is only one port exiting the ring, the source address area of both drop address memories or Write 1 at the addressed location of a specific source address area, or after writing the source address area source address or its specific source address area address and corresponding 1 or in this ring of memory If there is write data at the addressing position of the source address area or specific source address area required for transfer, the cell header or packet header of a call or routing cell header or packet with a cell header or a single packet as it is Is sent to the ring transmission line indicated by the bit at the lower specific position of the source address or cell or packet with cell header or the destination address contained in the packet header, or ADD of the cell or packet or packet with cell header A cell or packet that is sent to the ring transmission path indicated by the destination ring transmission path selection bit and transferred on the ring input to the node or a packet with a cell header is included in this destination address. When the bit length of the destination address area required for transfer in the network is short, the specified address in which the data in the drop address memory corresponding to the input transmission path in which the drop address is written is written as data If the address matches the destination address area required for forwarding on this ring within the destination address of the cell or packet or packet with cell header, the cell or packet or packet with cell header is DROPed and A node device that forwards a cell or packet or a packet with a cell header that operates in a MAC operation type path.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required bit length of the source address area is long, the source address of the source address area is divided into an upper source address or upper specific source address area and a lower source address or lower specific source address area, and the upper source address or The lower source address or lower specific source address is written to the address position specified in the upper specific source address area, or the upper source address or the lower source address is specified in the address position specified by the lower source address or lower specific source address, respectively. Writes the upper specific source address, the drop address memory corresponding to the ring and the write data at the same address position of the memory, if the data is different from the data to be written, drop the source address to write A cell or packet having a single drop address table written in the address table and ADDed to the ring of the node or a packet with a cell header is a call or routing cell for one of the drop address memory and the drop address table of the node. Source address area bits required for transfer in this ring, in the source address included in the cell header, packet header, or single packet header of a packet with header or payload or cell header If there is no write data at the addressed location of that memory at the source address, for both drop address memories, the source address of the source address area required for transfer on this ring is the upper source address or Divide into upper specific source address and lower source address or lower specific source address, and write lower source address or lower specific source address at the address position specified by upper source address or upper specific source address, respectively, or lower source After writing the upper source address or upper specific source address to the address position specified by the address or lower specific source address, respectively, or after the upper source address or upper specific source address is specified Write data and the data is not the lower source address or the lower specific source address, respectively, or there is write data at the address specified position of the lower source address or the lower specific source address, and the data is If it is not the upper source address or the upper specific source address, after writing the source address or the specific source address in the drop address table, the memory address specified by the upper source address or the upper specific source address is stored. When there is write data at the address specified position and the data is the lower source address or the lower specific source address, respectively, or the data is written at the address specified position of the lower source address or the lower specific source address. If the data is an upper source address or an upper specific source address, or the source address or the specific source address is in the drop address memory, respectively, the call or route is left as it is. Ring indicating the bit at the lower specific position of the source address included in the cell header or packet header of a set cell header or payload or a packet with a cell header or the header of a single packet or the destination address included in a packet or packet header with a cell header The data is sent to the transmission line or sent to the ring transmission line indicated by the ADD destination ring transmission line selection bit of the cell or packet or cell header packet, and transferred on the ring input to the node. Alternatively, the packet or packet with cell header is stored in the drop address memory corresponding to the ring specified by the upper destination address or the upper specific destination address in the destination address area required for transfer on this ring. If the data written at the address location matches the lower destination address or lower specific destination address, respectively, or the ring-compatible drop specified by the lower destination address or lower specific destination address The data written at the address location of the address memory matches the upper destination address or the upper specific destination address respectively. Or if the destination address or the specific destination address is in the drop address table, the cell or packet or packet with cell header is DROP, otherwise the MAC operation type It is a node device that transfers a cell or packet that performs path operation or a packet with a cell header.

  According to the present invention, in a node device used in a double ring network, the node device has a long bit length of a source address area necessary for transfer in this ring, among source addresses of cells or packets with an ADD input or a packet with a cell header. In this case, the source address in the source address area is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the address position specified by the upper source address or upper specific source address or the Write the upper source address or the upper specific source address and the lower source address or the lower specific source address as data corresponding to the upper source address or the upper specific source address, or the lower source address or the lower specific source address. Two drop addresses corresponding to the ring, in which the lower source address or the lower specific source address and the upper source address or the upper specific source address are written as data corresponding to the lower source address or the lower specific source address, respectively, at the specified address position or the subsequent address position. A cell or packet having a memory and ADDed to a ring of a node or a packet with a cell header is a cell header or packet of a packet or a packet with a header or payload or a cell header of the call or routing cell for the drop address memory corresponding to the ring inputted by the node. If the bit length of the source address area or specific source address area required for transfer in this ring is long among the source addresses included in the header or the header of a single packet, the upper source address If there is no write data that matches the memory addressing location of the memory at the memory source or upper specific source address or lower source address or lower specific source address and the address location within the specific range thereafter, this drop address memory When the bit length of the source address area required for transfer in the ring is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the upper source address or upper specific address The lower source address or lower specific source address corresponding to the upper source address or upper specific source address and the address position specified by the source address or within an address range within the specified range thereafter. Is written as data, or the address position specified by the lower source address or the lower specific source address or the address position within the specific range after that, corresponding to the lower source address or the lower specific source address, respectively, After writing the upper source address or the upper specific source address as data, the write data is specified at the address specified position in the memory specified by the upper source address, the upper specific source address, or an address within a specific range thereafter. Yes, and the data is an upper source address or upper specific source address and a lower source address or lower specific source address corresponding to the upper source address or upper specific source address, or a lower source address or lower specific source address or There is write data at the addressing position of the memory specified by the address within the specified range thereafter, and the data is the lower source address or the lower specified source address and the upper source address or the upper specified corresponding to each. If it is a source address, it is sent to the corresponding ring transmission path as it is, and the cell or packet or packet with cell header transferred on the ring inputted to the node is transferred on this ring within the destination address. Is written at the address location of the ring-corresponding drop address memory specified by the higher destination address or the higher specific destination address of the destination address area required for Data matches the upper destination address or upper specific destination address and the lower destination address or lower specific destination address corresponding to the upper destination address or upper specific destination address, or the lower destination address or lower specific destination address, respectively. The data written at the address position of the ring-corresponding drop address memory specified by or at the address position within the specific range after that corresponds to the lower destination address or the lower specific destination address and its corresponding If it matches the upper destination address or the upper specific destination address, the cell or packet or packet with cell header is DROP The node device transfers a cell or a packet or a cell header packet that operates in a MAC operation type 1 flow operation or a MAC operation type path.

  The present invention relates to a node device used in a double ring network, and when there are a plurality of ports exiting from the ring, the node device specifies the source address and port number of a cell or packet input to the port or a packet with a cell header corresponding to the port. Correspondingly, if there is only one port that leaves the ring, the source address of the input packet is simply written in both drop address tables corresponding to the ring. A cell, packet, or packet with cell header that ADDs to the ring is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell, packet, or packet with cell header, or a packet with cell, packet, or cell header The cell or packet that is sent to the ring indicated by the ADD destination ring transmission line selection bit and transferred on the ring or the packet with the cell header is dropped corresponding to the input ring transmission line in which only the drop address is written. If the address in the address table matches the destination address of the cell or packet or packet with cell header, if there are multiple ports exiting the ring, one port exiting the ring is included in the port written with that address. It is simply a node device that forwards a cell or packet or a cell header with a MAC operating path, characterized in that it DROPs, otherwise it passes through.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. If the required bit length of the source address area is short, the same write data corresponding to the ring in which 1 is written at the addressing position of the source address area or 1 is written correspondingly to the limited source address area In the case of a cell, a cell or packet with a drop address memory having a drop address memory and a packet with a cell header is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address. On the other hand, the packet or cell header The source address of Or sent to the ring transmission path indicated by the bit at the lower specific position of the destination address, or sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header, and input to the node If the bit length of the destination address area required for transfer on this ring is short for the cell or packet transferred on the ring or the packet with the cell header, the input transmission path in which the drop address is written The specified address where the data of the corresponding drop address memory is written or the address where the data is written is the destination address of the cell or packet or packet with cell header required for transfer on this ring. If it matches the destination address area, the cell or packet or packet with cell header is dropped, otherwise the MAC operation type path operating cell or packet or packet with cell header is forwarded. It is a node device.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required bit length of the source address area is long, the source address of the source address area is divided into an upper source address or upper specific source address area and a lower source address or lower specific source address area, and the upper source address or The lower source address or lower specific source address area is written at the address position specified in the upper specific source address area, or the upper source address or upper specific source is specified at the address position specified in the lower source address or lower specific source address area. If there is write data at the same address location in the ring corresponding drop address memory in which the address area is written and the data to be written is different, the source address area to be written is written in the drop address table A cell or packet having a single drop address table and ADDed to a ring of a node or a packet with a cell header is sent to a ring transmission path indicated by a bit at a lower specific position of a destination address in the case of a cell. Or in the case of a packet with a cell header, it is sent to the ring transmission path indicated by the bit at the lower specific position of the source address or destination address, or the ADD destination ring of the cell or packet or packet with cell header A cell or packet that is sent to the ring transmission path indicated by the transmission path selection bit and transferred on the ring input to the node, or a packet with a cell header, is the destination address area required for transfer on this ring. If the data written in the address location of the ring-corresponding drop address memory specified by the upper destination address of the disk matches the lower destination address or the lower specific destination address, or the lower destination address Or, if the written data matches the upper destination address at the address position specified by the lower specific destination address, or the specific destination address is dropped A node device that forwards a cell or packet or a cell header with a MAC operation path, characterized in that if it is in the address table, the cell or packet or packet with a cell header is dropped and the others are passed through It is.

  According to the present invention, in a node device used in a double ring network, the node device has a long bit length of a source address area necessary for transfer in this ring, among source addresses of cells or packets with an ADD input or a packet with a cell header. In this case, the source address in the source address area is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the address position specified by the upper source address or upper specific source address or the Write the upper source address or upper specific source address and the lower source address or lower specific source address as data in the following address positions, or use the lower source address or lower specific source address. Two drop addresses corresponding to the ring, in which the lower source address or the lower specific source address and the upper source address or the upper specific source address are written as data corresponding to the lower source address or the lower specific source address respectively. A cell or packet with a memory and ADDed to the ring of a node or a packet with a cell header is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address in the case of a cell, while in the case of a packet or a packet with a cell header Is sent to the ring transmission path indicated by the bit at the lower specific position of the source address or destination address, or the link indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with a cell header. A cell or packet that is sent to the transmission line and transferred on the ring that has been input to the node, or a packet with a cell header, is the destination address of the destination address area required for transfer on this ring or the destination address of the destination address. The data written in the address position of the ring-corresponding drop address memory specified by the upper specific destination address or the address position within the specific range thereafter is the upper destination address or the upper specific destination address, respectively. Matches the lower destination address or lower specific destination address, or the lower destination address or lower specific destination address. The data written in the address position of the ring-corresponding drop address memory specified in the address or the address position within the specified range after that corresponds to the lower destination address or the lower specified destination address, respectively. A cell that operates in a MAC operation type path, characterized in that if it matches the upper destination address or the upper specific destination address, the cell or packet or packet with a cell header is dropped and the others are passed through. Or it is a node apparatus which transfers a packet or a packet with a cell header.

  The present invention relates to a node device used in a single or double ring network, and when there are a plurality of ports exiting from the ring, the node device includes a source address of a cell or packet input to the port corresponding to the port or a packet with a cell header. If there is only one port exiting the ring with the corresponding port number, it has a single drop address table in which the source address of the entered cell or packet or packet with cell header is written. The cell or packet to be ADDed or the packet with the cell header is the source address included in the packet header or the packet header of the packet with the call or routing cell header or the packet with the call or routing cell header in the drop address table of the node Otherwise, if there are multiple ports exiting the ring, write that port and its source address, and if there is only one port exiting the ring, write only that source address into the table before calling or routing Ring transmission indicated by the bit in the lower specific position of the source address included in the packet header or packet header of the packet or packet header of the cell payload or call or routing cell header or the destination address included in the packet or packet header of the cell header If there is a source address of the cell or packet or packet with cell header, the source address or destination address of the cell or packet or packet with cell header is left as is. Cell or packet that is sent to the ring transmission path indicated by the bit of this, or sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header, and transferred on the ring input to the node Or, if a packet with a cell header matches the destination address of the cell or packet or packet with a cell header if the address in the drop address table that contains only the drop address matches with the destination address of the cell or packet or packet with a cell header, write the packet with that address. If there is only one port that exits from the ring, the port that is connected is simply DROPed or not, and if the ring transmission line is a cell or a packet or a packet with a cell header, the ADD destination ring transmission line identification bit Ring showing When the transmission path or cell or packet or packet with cell header matches the ring transmission path indicated by the bit at the lower specific position of the source address or destination address and the source address is in the drop address table, a multi-round bit is added. Thereafter, the other cells are configured to be output as they are to the ring transmission line, and the MAC operation type path operation cell or packet or cell header packet or MAC operation type 1 flow operation cell or packet or cell header packet is characterized. Is a node device that transfers.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. If the required bit length of the source address area is short, the same write data corresponding to the ring in which 1 is written at the addressing position of the source address area or 1 is written correspondingly to the limited source address area A cell or packet or cell header with a cell header that has a drop address memory with ADD to the ring of the node, for one drop address memory of the node, the cell header or packet header or payload or cell header of the packet with cell header or Packet header Or, if the bit length of the source address area required for transfer in this ring is short among the source addresses included in the header of a single packet, the write data will be stored at the address specified position in that memory. Otherwise, if there is only one port out of the ring, simply write 1 to the source address area addressing location of the drop address memory, or write the source address area source address and corresponding 1 Later, or if there is write data in the addressing location of the source address area required for this ring transfer of that memory, the cell header or packet of the call or routing cell header or payload or packet with cell header as it is Header or single packet header Sends to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the source address or cell or packet with cell header or packet header, or ADD destination ring transmission possessed by the cell or packet or packet with cell header A cell or packet that is sent to the ring transmission path indicated by the path selection bit and transferred on the ring input to the node or a packet with a cell header is included in the destination address area required for transfer on this ring. When the bit length is short, the specified address where the data in the drop address memory corresponding to the input transmission path in which the drop address is written is written, or the address where the data is written is the cell, packet or cell. If the destination address area required for transfer on this ring matches the destination address of the packet with the packet header, the cell or packet or the packet with the cell header is dropped or not when the ring is transmitted. The path matches the ring transmission path indicated by the ADD destination ring transmission path identification bit of the cell or packet or cell header packet, or the bit of the lower specific position of the source address or destination address of the cell or packet or packet with cell header The bit length of the source address area required for transfer in this ring is short among the source addresses of cells or packets or packets with cell headers that are transferred on the ring that is input to the node and that matches the ring transmission path indicated. In this case, the specified address where the data in the drop address memory corresponding to the input transmission path in which the drop address is written is written or the address where the data is written is included in the source address of the cell or packet or packet with cell header. If it matches the source address area required for transfer on this ring, a multi-round bit is added to the cell or packet or packet with cell header, and the rest is output to the ring transmission line as it is. A node device that forwards a cell or a packet with a MAC operation type path or a packet with a cell header or a cell or a packet with a MAC operation type 1 flow operation or a packet with a cell header.

  According to the present invention, in a node device used in a double ring network, the node device has a long bit length of a source address area necessary for transfer in this ring, among source addresses of cells or packets with an ADD input or a packet with a cell header. In this case, the source address in the source address area is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the address position specified by the upper source address or upper specific source address or the Write the upper source address or the upper specific source address and the lower source address or the lower specific source address as data corresponding to the upper source address or the upper specific source address, or the lower source address or the lower specific source address. Two drop addresses corresponding to the ring, in which the lower source address or the lower specific source address and the upper source address or the upper specific source address are written as data corresponding to the lower source address or the lower specific source address, respectively, at the specified address position or the subsequent address position. A cell or packet with a memory and ADDed to a ring of a node or a packet with a cell header is a packet with a header or payload or a cell header of the call or routing cell for the drop address memory and drop address table corresponding to the ring inputted by the node. The bit length of the source address area or specific source address area required for transfer in this ring among the source addresses included in the cell header, packet header, or single packet header If it is long, both the upper source address, the upper specific source address, the lower source address, or the lower specific source address, if there is no write data that matches the addressing position in the memory and the address position within the specific range after that, both When the bit length of the source address area required for transfer in this ring is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, The upper source address or the upper specific source address and the lower source address corresponding to the address position specified by the upper source address or the upper specific source address or the address position within the specific range after that, respectively. A lower source address or a lower specific source address and corresponding to the address position specified by the lower source address or the lower specific source address or within the specific range after that After the upper source address or upper specific source address is written, the write data is specified at the address specified position in the memory specified by the upper source address or upper specific source address or an address within a specific range thereafter. And the data is the upper source address or the upper specific source address and the lower source address or the lower specific source address corresponding to the upper source address or the upper specific source address, or the lower source address or the lower specific source address or There is write data at the addressing position in the memory specified by the address within the specified range after that, and the data is the lower source address or the lower specified source address and the upper source address or the upper corresponding to each. If the source address is a specific source address, the source address or cell or packet with a cell header or the header of a packet with a cell header or the header of a packet with a cell header or the header of a packet with a cell header or the packet or packet with a cell header is included. Send to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the header, or link indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header A cell or packet that is sent to the transmission line and transferred on the ring that has been input to the node, or a packet with a cell header, is the destination address of the destination address area required for transfer on this ring or the destination address of the destination address. The data written in the address position of the ring-corresponding drop address memory specified by the upper specific destination address or the address position within the specific range thereafter is the upper destination address or the upper specific destination address, respectively. Matches the lower destination address or lower specific destination address, or the lower destination address or lower specific destination address. The data written in the address position of the ring-corresponding drop address memory specified in the address or the address position within the specified range after that corresponds to the lower destination address or the lower specified destination address, respectively. If it matches the upper destination address or upper specific destination address, the cell or packet or packet with cell header is DROPed or absent, and the ring transmission path has a cell or packet or cell header. The bit in the lower specific position of the source address or destination address of the cell or packet or packet with cell header that matches the ring transmission path indicated by the packet's ADD destination ring transmission path identification bit Specified by the higher source address or higher specific source address of the source address area required for transfer on this ring, in the source address of the cell or packet or packet with cell header. The lower source address or lower specific address corresponding to the upper source address or upper specific source address and the data written in the address position of the drop address memory corresponding to the ring or the address position within the specific range after that, respectively. If it matches the source address, or the data written at the address position of the ring-corresponding drop address memory specified by the lower source address or lower specific source address or the address position within the specific range after that, If the source address or lower specific source address and its corresponding upper source address or upper specific source address correspond to each other, a multi-round bit is added to the cell or packet or packet with cell header, and the others Is a configuration for outputting to the ring transmission path as it is, a node that transfers a cell or packet or cell header with a MAC operation type path operation, or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header Device.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required bit length of the source address area is long, the source address of the source address area is divided into an upper source address or upper specific source address area and a lower source address or lower specific source address area, and the upper source address or The lower source address or lower specific source address area is written at the address position specified in the upper specific source address area, or the upper source address or upper specific source is specified at the address position specified in the lower source address or lower specific source address area. If there is a write address at the same address in the ring and the drop address memory corresponding to the ring in which the address was written, and it differs from the data to be written, the source address area to be written is written to the drop address table. A cell or packet having a single drop address table and ADDed to the ring of the node or a packet with a cell header is the header or the cell of the call or routing cell for the drop address memory and the drop address table corresponding to the ring input by the node. If the bit length of the source address area required for transfer in this ring is long among the source addresses included in the cell header of packet with payload or cell header or packet header or single packet header If there is no write data at the addressing position of the memory of the source address, the source address of the source address area required for transfer in this ring is set to the upper source address or upper specific source for both drop address memories. The address is divided into the lower source address or lower specific source address, and the lower source address, lower specific source address, upper source address or upper specific source address and corresponding to the address position specified by the upper source address or upper specific source address Write the lower source address or lower specific source address, or set the upper source address or upper specific source address at the address specified by the lower source address or lower specific source address. Is written, or there is write data at the memory addressing location specified by the upper source address or upper specific source address, and the data is not the lower source address or lower specific source address, or the lower When there is write data at the addressing position of the source address or lower specific source address and the data is not the upper source address or upper specific source address, after writing the specific source address in the drop address table, On the other hand, if there is write data at the memory addressing position specified by the upper source address or the upper specific source address and the data is the lower source address or the lower specific source address, or the lower source If there is write data at the addressing position of the address or lower specific source address and the data is an upper source address or upper specific source address, or if the specific source address is in the drop address memory, As it is, the source address included in the cell header or packet header of a call or routing cell header or payload or packet with a cell header or the header of a single packet or the subordinate identification of the destination address included in the packet of a packet or packet with a cell header Sent to the ring transmission path indicated by the bit of the position, or sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or cell header packet, The cell or packet or packet with cell header that is transferred on the specified ring is the drop address corresponding to the ring specified by the higher destination address in the destination address area required for transfer on this ring. When the data written to the memory address location matches the lower destination address or lower specific destination address, or the address location specified by the lower destination address or lower specific destination address If the addressed data matches the higher destination address, or if the specific destination address is in the drop address table, the cell or packet Or a packet with a cell header is dropped or not, and its ring transmission line matches the ring transmission line indicated by the ADD destination ring transmission line identification bit of the cell or packet or packet with a cell header, or Matches the ring transmission path indicated by the bit at the lower specific position of the source address or destination address of the packet or packet with cell header, and the source address of the cell or packet or cell header packet transferred on the ring input to the node The data written in the address address of the drop address memory corresponding to the ring specified by the upper source address or the upper specific source address of the source address area required for transfer in this ring is sent to the lower source address. Matches the lower specific source address, or the data written at the address position specified by the lower source address or lower specific source address matches the upper source address or upper specific source address, or When the specific source address is in the drop address table, a multi-round bit is assigned to a cell or packet or a packet with a cell header, and the others are directly output to the ring transmission line. It is a node device that transfers a cell or packet that operates in a MAC operation type path or a packet with a cell header or a cell or packet that operates in a MAC operation type 1 flow or a packet with a cell header.

  The present invention relates to a node device used in a double ring network, and when there are a plurality of ports exiting from the ring, the node device specifies the source address and port number of a cell or packet input to the port or a packet with a cell header corresponding to the port. Correspondingly, if there is only one port exiting from the ring, two drop address tables in which the source address of the entered cell or packet or packet with cell header is written in the two drop address tables corresponding to the ring A cell or packet or cell header with a cell header that adds to the node's ring and has a packet header or packet of the packet or packet with the call or routing cell header in its drop address table. If there is no source address included in the header of the network, if there are multiple ports exiting the ring, then that port and its source address, and if there is only one port exiting the ring, only that source address is stored in the table. , The source address contained in the packet header or packet header of the packet with the call or routing cell header, or the destination address contained in the packet or packet header with the cell or cell header. If there is a source address of the cell or packet or packet with cell header, the source address of the cell or packet or packet with cell header is left as it is. Send to the ring transmission line indicated by the bit at the lower specific position of the destination address, or send to the ring transmission line indicated by the ADD destination ring transmission line selection bit of the cell or packet or packet with cell header, and input from the ring transmission line The cell or packet or packet with cell header to be used is the case where the destination address of the cell or packet or packet with cell header is in the drop address table corresponding to the ring entered by the cell or packet or packet with cell header, and there are multiple ADD ports Output to the ADD port written together with the address, output to the ADD port if there is only one ADD port, or if there is no, the ring transmission line has a cell, packet or cell header The ring transmission path indicated by the ADD destination ring transmission path identification bit of the packet matches the ring transmission path indicated by the bit at the lower specific position of the source address or destination address of the cell or packet or packet with cell header, and the source address is A cell that operates in a MAC operation type path, characterized in that, if the packet is in the drop address table corresponding to the ring that the packet is input to, the multi-round bit is added, and then the other is output as it is to the ring transmission line. Alternatively, it is a node device that transfers a packet or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header.

  In the node device used in the double ring network, the cell or packet used in the node device or a packet with a cell header has a ring transmission path identification bit, and is transmitted / received between the transmitting node and the receiving node of the cell or packet or cell header. In the configuration, the ring transmission line identification bit to be used is the ring transmission line identification bit of the transmission cell or packet or packet with a cell header and the opposite bit of the ring transmission line identification bit of the reception cell or packet or packet with cell header at the transmission node. When there are a plurality of ports exiting from the ring, the node device associates the source address of the cell or packet input to the port with the port corresponding to the port and the port number and the port address exiting the ring. But In one case, it has a single drop address table in which the source address of the entered cell or packet or packet with cell header is written, and the cell or packet or packet with cell header added to the ring has its call or route in the drop address table. If there is no source address included in the packet header or packet header of the packet with the payload of the setup cell or the call or routing cell header or the header of the packet, if there are multiple ADD ports, the source address and ADD of the cell or packet or packet with the cell header If there is only one ADD port, the source address of the cell or packet or packet with cell header is written to the table, and then the cell or packet or cell If there is a source address of a packet with a header, it is sent as is to the ring output corresponding to the ring transmission path indicated by the ADD destination ring transmission path identification bit of the cell or packet or cell header and input from the ring transmission path When there is a destination address of the cell or packet or packet with cell header in the drop address table and there are a plurality of ADD ports, the output is made to the ADD port written together with the address, and when there is one ADD port If the ring transmission path is output to the ADD port and is not output to the ring transmission path as it is, or if there is no ring transmission path, the ring transmission path is an ADD destination ring transmission path of a cell or a packet or a packet with a cell header. Ring transmission line indicated by identification bit If the source address is in the drop address table, a multi-round bit is added, and the others are output as they are to the ring transmission path. It is a node device that transfers a cell, a packet, a packet with a cell header, or a MAC operation type 1-flow cell, or a packet with a cell header.

  The present invention relates to a node device used in a double ring network, and when there are a plurality of ports exiting from the ring, the node device specifies the source address and port number of a cell or packet input to the port or a packet with a cell header corresponding to the port. Correspondingly, if there is only one port exiting from the ring, the source address of the cell or packet or packet with cell header that has just been entered is written to the working side as one working drop address table and one spare address. A cell or packet or cell header packet that has a drop address table and ADDs to the ring of the node is added to the packet drop header of the call or routing cell payload or the packet with the call or routing cell header in the current drop address table of the node. Or, if there is no source address included in the packet header, if there are multiple ports exiting the ring, the port and its source address, and if there is only one port exiting the ring, only the source address is stored in the table. To the source address included in the packet header or packet header of the packet with the call or routing cell header, or the destination included in the header of the cell or packet or packet with cell header If the source address of the cell or packet or packet with cell header is in the current drop address table, it is sent as is to the destination address. When a ring transmission path to be added corresponding to the destination address of a cell, packet, or packet with cell header is written in the stable table or drop address table, ADD destination ring transmission possessed by the cell, packet, or packet with cell header When the transmission path name is written in the path identification bit and the transmission path is not written, and the ring transmission path to be ADD corresponding to the source address in the working drop address table is written, If the transmission path is written in the ADD destination ring transmission path identification bit of the packet and is not written in the transmission path, it is the lower order of the source address or destination address of the cell or packet or cell header packet The phosphorus indicated by the bit at a specific position Or the destination address of the cell or packet or cell header packet input from the ring transmission path is the above-mentioned current address. When there is a plurality of ADD ports in the drop address table, the data is output to the ADD port written together with the address. When there is only one ADD port, the data is output to the ADD port. If there is more than one ADD port, it is output to the ADD port written with the address, and when there is one ADD port, it is output to the ADD port, and there is no spare Output to the ring transmission line as it is and a spare drop address When there is no hit for a certain time in the table search, the memory of the spare drop address table is cleared and the spare drop address table is used as the current one, and the drop address table that has been used until then is used as a spare. A node device that forwards a cell or a packet with a MAC operation type 1 flow operation or a packet with a cell header or a cell or a packet with a MAC operation type path operation or a packet with a cell header.

The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required source address area or specific source address area has a short bit length, 1 is written in the addressing position of the source address area or specific source address area, or the source address or specific source address area source address And 2 corresponding drop address memories and 2 spare drop address memories having the same write data corresponding to the ring, in which 1 is written,
A cell or packet or a cell header packet that ADDs to the ring of the node, for one working drop address memory of the node, the cell header or packet header of the call or routing cell header or payload or cell header packet or a single packet If the bit length of the source address area or specific source address area required for transfer in this ring is short among the source addresses included in the header, the addressing position of that source address area or specific source address area in that memory If there is no write data, if there is only one port exiting the ring, simply write 1 to the source address area of both working drop address memories or the addressing location of the specific source address area, or The source address area or the specific source address area of the source address area or the corresponding source address area and the corresponding source address area or the specific source address area necessary for the transfer in this ring of the working drop address memory of one of them If there is write data at the addressing location, the source address or cell or cell header included in the cell header or packet header of the packet with the header or payload or cell header of the call or routing cell or the header of a single packet is left as is It is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the packet or packet header, or the ADD destination list of the cell or packet or packet with cell header The cell or packet that is sent to the ring transmission path indicated by the transmission transmission path selection bit and transferred on the ring or the packet with the cell header is the destination address required for the transfer on this ring. If the bit length of the area is short, the specified address where the data of the working drop address memory corresponding to the input transmission path in which the drop address is written is written, or the address where the data is written is the cell, packet or cell header If the destination address area of the attached packet matches the destination address area required for forwarding on this ring, the cell or packet or cell header packet is dropped, while the cell or packet or cell header is attached. If the bit length of the destination address area required for transfer on this ring is short among the destination addresses, the data in the current drop address memory corresponding to the input transmission path in which the drop address is written is written. If the specified specified address or the address written as data does not match the destination address area required for transfer on this ring in the destination address of the cell or packet or packet with cell header, A spare drop address memory is searched, and a cell or packet or packet with a cell header is dropped if the bit length of the destination address area required for transfer in this ring is short. The reserved drop address memory data corresponding to the input transmission path in which the data is written The specified address where the data of the memory is written, or the address where the data is written as this data is the destination address of the cell or packet or packet with cell header. If it matches the destination address area required for forwarding on the cell, the cell or packet or packet with cell header is DROP, while the cell or packet or packet with cell header is in this ring within its destination address. If the bit length of the destination address area required for the transfer of data is short, the designated address in which the data in the spare drop address memory corresponding to the input transmission path in which the drop address is written is written as data. If the included address does not match the destination address area required for transfer on this ring in the destination address of the cell or packet or packet with cell header, it is output to the ring transmission path as it is, If the read data does not match the comparison data for a certain period of time in the search of both spare drop address memories, both spare drop address memories are cleared at the same time, and each spare drop address memory is simultaneously used. A cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a cell with a MAC operation type path or Packet Or a node device that forwards a packet with a cell header.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required bit length of the source address area is long, the source address of the source address area is divided into an upper source address or upper specific source address area and a lower source address or lower specific source address area, and the upper source address or The lower source address or lower specific source address is written to the address position specified in the upper specific source address area, or the upper source address or the lower source address is specified in the address position specified by the lower source address or lower specific source address, respectively. Writes the upper specific source address, two working drop address memories corresponding to the ring and two spare drop address memories, and the write data is in the same address position of the memory, and the data is different from the data to be written Has a working drop address table and a spare drop address table in which the source address to be written is written in the drop address table, and a cell or packet or a packet with a cell header to be ADDed to the ring of the node is one of the working drop addresses of the node For the memory and working drop address table, it is included in the cell header or packet header of the call or routing cell or packet with cell header or packet header or single packet header Of the source addresses, if the bit length of the source address area required for transfer in this ring is long, if there is no write data at the address specified position of the memory of the source address, both of the working drop address memories are Divide the source address of the source address area required for transfer in this ring into an upper source address or upper specific source address and lower source address or lower specific source address, and an address specified by the upper source address or upper specific source address Write the lower source address or lower specific source address to the location, respectively, or write the upper source address or upper specific source address to the address location specified by the lower source address or lower specific source address, respectively. After or when there is write data at the addressing position of the upper source address or upper specific source address and the data is not the lower source address or lower specific source address, respectively, or the lower source address or lower specific source If there is write data at the addressing position of the address and the data is not the upper source address or the upper specific source address, respectively, after writing the source address or the specific source address to the working drop address table, On the other hand, there is write data at the addressing position of the memory specified by the upper source address or the upper specific source address, and the data is the lower source address or the lower specific source address, respectively. Or when there is write data at the address specified position of the lower source address or the lower specific source address and the data is the upper source address or the upper specific source address, respectively, or the source address or the specific source address Is in the working drop address table, the source address or cell or packet with cell header included in the cell header or packet header of a packet with a call or routing cell header or packet header or a single packet header or Send to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the header of the packet, or ADD of the cell or packet or packet with cell header A cell or packet that is sent to the ring transmission path indicated by the ring transmission path selection bit and transferred on the ring or a packet with a cell header is the destination address required for transfer on this ring. The data written in the address position of the ring-capable working drop address memory specified by the upper destination address or upper specific destination address of the area is respectively set to the lower destination address or lower specific destination address. If there is a match, the data written in the address position of the working drop address memory corresponding to the ring specified by the lower destination address or the lower specific destination address Cell or packet or cell header packet if the destination matches the higher destination address or higher specific destination address, or if the destination address or the specific destination address is in the working drop address table, respectively. DROP, while a cell or packet or packet with a cell header is specified by its higher destination address or higher specific destination address in the destination address area required for transfer on this ring. The data written at the address position of the working drop address memory corresponding to the ring is the lower destination address or lower specific address, respectively. If it does not match the destination address, or the data written at the address location of the working drop address memory corresponding to the ring specified by the lower destination address or the lower specific destination address is the upper destination, respectively. If it does not match the address or higher specific destination address, or if the destination address or the specific destination address is not in the working drop address table, the spare drop address memory is searched and the cell or packet or packet with cell header is Of the destination address that is required for transfer on this ring, When the data written in the address position of the ring-compatible spare drop address memory specified by the fixed destination address matches the lower destination address or the lower specific destination address, or the lower order When the data written in the address position of the ring-compatible spare drop address memory specified by the destination address or lower specific destination address matches the upper destination address or upper specific destination address, respectively. Or if the destination address or its specific destination address is in the reserved drop address table, the cell or packet or cell header The packet is DROP, while a cell or packet or a packet with a cell header is specified by its upper destination address or upper specific destination address in the destination address area required for transfer on this ring. If the data written in the address position of the reserved drop address memory corresponding to the ring does not match the lower destination address or the lower specific destination address, respectively, or the lower destination address or the lower specific address The data written in the address position of the spare drop address memory corresponding to the ring specified by the destination address is the upper destination address. Or if it does not match the upper specific destination address, or if the destination address or the specific destination address is not in the spare drop address table, it is output to the ring transmission path as it is, and both spare drop address memories When the read data does not match with the comparison data for a certain period in the search of the spare drop address table or when there is no hit, both the spare drop address memory and the spare drop address table are simultaneously cleared. At the same time, the spare drop address memory and the spare drop address table are used simultaneously, and the drop address memories and drop address tables corresponding to the two rings that have been used so far are used. At the same time the pre-Le, it is a node device for transferring cells or packets or the cell header packet with operating cells or packets, or a cell header with packet or MAC operation type path which operates MAC operation form 1 flows characterized by.

  The present invention relates to a node device used in a double ring network, and in the case where there is only one port exiting from the ring, the node device transfers only the input address of a cell or packet or packet with a cell header in this ring. When the required bit length of the source address area is long, the source address of the source address area is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the upper source address or upper specific address The upper source address or upper specific source address and the lower source address or lower specific source address corresponding to the upper source address or upper specific source address and the lower source address or 2 corresponding to the ring, in which the lower source address or the lower specific source address and the upper source address or the upper specific source address are written in correspondence with the lower source address or the lower specific source address at the address position specified by the higher specific source address or the address position after that. A cell or packet that has two active drop address memories and two spare drop address memories and ADDs to the ring of the node or a packet with a cell header is called or routed for the active drop address memory corresponding to the ring inputted by the node. Among the source addresses contained in the cell header or packet header of a cell header or payload or a packet with a cell header or the header of a single packet, the source address area or identification required for transfer in this ring If the bit length of the source address area is long, the write data that matches the address specified position in the memory of the upper source address or upper specific source address or lower source address or lower specific source address and the address position within the specified range thereafter If the bit length of the source address area required for transfer in this ring is long for both working drop address memories, the source address is either the upper source address or the upper specific source address and the lower source address or Divided into lower specific source addresses, the upper source address or upper specific source address and the address position specified by the upper source address or upper specific source address or the address position within the specified range after that, respectively Correspondingly, the lower source address or the lower specific source address is written, or the lower source address or the lower specific address is specified at the address position specified by the lower source address or the lower specific source address or within the specific range thereafter. The specific source address and the memory specified by the upper source address or the upper specific source address corresponding to the specific source address and the upper source address or the upper specific source address or an address within a specific range thereafter If there is write data at the address specified position and the data is the upper source address or upper specific source address and the corresponding lower source address or lower specific source address, or the lower source address Is specified by a lower specific source address or an address within a specific range after that, and there is write data at the addressing position of the memory, and the data corresponds to the lower source address or the lower specific source address, respectively. In the case of the upper source address or the upper specific source address, the source address or cell included in the cell header or packet header of a packet with a call or routing cell or a packet with a cell header or the header of a single packet, or Send to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the packet with cell header or the packet header, or the ADD destination of the cell or packet or packet with cell header The cell or packet that is sent to the ring transmission path indicated by the ring transmission path selection bit and transferred on the ring input to the node, or the packet with cell header, is the destination address required for transfer on this ring. The data written at the address position of the working drop address memory corresponding to the ring specified by the upper destination address or the upper specific destination address of the area or the address position within a specific range thereafter is the upper destination address. Or the upper specific destination address and its lower destination address or lower specific destination address corresponding to each, or its lower destination address Or, the data written at the address position of the working drop address memory corresponding to the ring specified by the lower specific destination address or the address position within the specific range thereafter is the lower destination address or the lower specific destination address and , The cell or packet or packet with cell header is DROP if it matches the corresponding higher destination address or higher specific destination address, while the cell or packet or packet with cell header is Specified by the higher destination address or higher specific destination address in the destination address area required for transfer on this ring. The data written to the address position of the working drop address memory corresponding to the ring or the address position within the specific range thereafter is the upper destination address or the upper specific destination address and the lower destination corresponding to the upper destination address or the upper specific destination address. If the address does not match the destination address or the lower specific destination address, or the address location of the current drop address memory corresponding to the ring specified by the lower destination address or the lower specific destination address, or an address location within a specific range after that The data written to the lower destination address or the lower specific destination address and the upper destination address corresponding to each lower destination address or lower specific destination address. If it does not match the host or higher specific destination address, the spare drop address memory is searched, and the cell or packet or packet with cell header is the destination address required for transfer on this ring within that destination address. The data written at the address position of the ring-corresponding spare drop address memory specified by the upper destination address or the upper specific destination address in the address area or at an address position within a specific range thereafter is transferred to the upper destination address. Match the lower destination address or lower specific destination address corresponding to the destination address or higher specific destination address and the corresponding lower destination address or lower specific destination address. The data written at the address position in the ring-compatible spare drop address memory specified by the destination address or lower specific destination address or the address position within a specific range thereafter is the lower destination address or lower specific address. If it matches the destination address and its corresponding higher destination address or higher specific destination address, the cell or packet or packet with cell header is DROP, while with the cell or packet or cell header The packet is sent to the higher-order destination address or higher-specific destination address in the destination address area required for transfer on this ring. The data written at the address position of the spare drop address memory corresponding to the ring specified by the destination address or the address position within the specified range thereafter is the upper destination address or the upper specified destination address, respectively. If the corresponding lower destination address or lower specific destination address does not match, or the address location of the spare drop address memory corresponding to the ring specified by the lower destination address or lower specific destination address or later The data written in the address position within the specific range of the lower destination address or lower specific destination address and corresponding to each, If it does not match the upper destination address or the upper specific destination address, the data is output to the ring transmission line as it is, and the data read for a certain time may match the comparison data in the search of both spare drop address memories. If there is not, both the spare drop address memories are cleared at the same time, and each spare drop address memory is made active at the same time, and the two drop address memories corresponding to the previous rings are made spare at the same time, A node device that forwards a cell or a packet with a MAC operation type 1 flow operation or a packet with a cell header or a cell or a packet with a MAC operation type path operation or a packet with a cell header.

  The present invention relates to a node device used in a single or double ring network, where the node device has a short bit length of a source address of a cell or a packet or a cell header with a cell header when only one port exits from the ring. Has one current drop address memory and one spare drop address memory with 1 written to the addressing position or 1 corresponding to the source address and one corresponding to the source address. If the bit length is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the lower source is located at the address specified by the upper source address or upper specific source address. Address or lower specific source address Alternatively, the upper source address or the upper specific source address and the lower source address or the lower specific source address corresponding to the upper source address or the upper specific source address or the upper source address or the upper specific source at the address position specified by the lower source address or the lower specific source address. If there is one current drop address memory and one spare drop address memory in which the address is written, or if there is write data at the same address location in the memory, the source address to be written is stored in the drop address table. A cell or packet or cell header with a cell header that has a single working drop address table and a spare drop address table that has been written and is added to the ring of the node is the node's working drop. For a dress memory, if the number of bits of the source address contained in the packet header or packet header of the packet with the payload or cell header of the call or routing cell is short, it is long at the addressing location in the memory. In some cases, if there is no write data in the memory addressing location or drop address table of the source address, if there is only one port out of the ring, the bit length of the source address is short in the drop address memory. In this case, 1 is written at the addressing position, or 1 is written corresponding to the source address and correspondingly, and when the bit length of the source address is long, the source address is set to the upper source address or the upper address. Specific source address and lower source address Or lower specific source address, the lower source address or lower specific source address or upper source address or upper specific source address and the lower source address corresponding to the address position specified by the upper source address or upper specific source address Write the address or lower specific source address, or write the upper source address or upper specific source address at the address location specified by the lower source address or lower specific source address, or the payload of the call or routing cell Or if the packet header of a packet with a cell header or the source address contained in the packet header has a long number of bits, the memory addressing of the upper source address or the upper specific source address in that memory If there is write data at the location and the data is not a lower source address or lower specific source address, or there is write data at the memory addressing location of the lower source address or lower specific source address, and the data is If it is not the upper source address or the upper specific source address, after writing the source address in the drop address table, or the packet header or packet header of the packet with the payload or cell header of the call or routing cell When the number of bits of the source address included in the memory is short, there is write data at the addressed position in the memory. On the other hand, when it is long, the memory address of the upper source address or the upper specific source address is stored. If there is write data at the specified position and the data is the lower source address or the lower specific source address, or there is write data at the address specified position in the memory at the lower source address or the lower specific source address, and If the data is an upper source address or an upper specific source address, or if the source address is in the working drop address table, the packet header of the call or routing cell payload or packet with cell header or It is sent to the ring transmission line indicated by the bit at the lower specific position of the source address or cell or packet with cell header or the destination address contained in the packet header, or the cell or packet. The cell or packet or packet with cell header that is sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the packet or packet with cell header and transferred on the ring input to the node has a short number of bits of the destination address. In this case, for the current drop address memory where the drop address is written, the specified address where the data is written or the address where the data is written matches the destination address of the cell or packet or packet with cell header On the other hand, if the bit length of the destination address is long, the data written at the address position specified by the upper destination address is the lower destination address. Or if it matches the lower specific destination address, or if the data written at the address location specified by the lower destination address or the lower specific destination address matches the upper destination address, or If the destination address is in the working drop address table, the cell or packet or packet with cell header is DROP, while the packet header or packet of the call or routing cell payload or cell header packet If the number of bits of the destination address included in the header is short, the specified address where the data is written is the current drop address memory in which the drop address is written. Or if the address written as data does not match the destination address of the cell or packet or packet with cell header, or the packet header or packet of the call or routing cell payload or packet with cell header When the number of bits of the destination address included in the header is long and the read data at the addressed location in the memory of the upper destination address does not match the lower destination address or the lower specific destination address, or the lower destination address The read data at the addressed location of that memory at the destination address or lower specific destination address does not match the upper destination address, or When the destination address is not in the current drop address table, the spare drop address memory and the spare drop address table are searched, and the packet of the cell or packet or cell header has a short bit number of the destination address. For the spare drop address memory in which the drop address is written, the specified address where the data is written or the address where the data is written matches the destination address of the cell or packet or packet with cell header On the other hand, if the bit length of the destination address is long, the data written at the address position specified by the upper destination address is the lower destination address. If it matches the destination address or the lower specific destination address, or if the data written at the address location specified by the lower destination address or the lower specific destination address matches the upper destination address, Or if the destination address is in the spare drop address table, the cell or packet or packet with cell header is DROP, while the packet header or packet of the call or routing cell payload or cell header packet If the number of bits in the destination address included in the header is short, the data is written to the spare drop address memory in which the drop address is written. The specified address or the address written as data does not match the destination address of the cell or packet or packet with cell header, or the packet header of the packet with the payload or cell header of the calling or routing cell Or if the destination header contained in the packet header has a long number of bits, and the read data at the addressed location in the memory of the upper destination address does not match the lower destination address or the lower specific destination address, or The read data at the addressed location in the memory of the lower destination address or lower specific destination address matches the upper destination address. If the destination address is not in the current drop address table, the data is output to the ring transmission path as it is, and the read data is read for a certain time in the search of the spare drop address memory and the spare drop address table. If there is no match with the comparison data, the spare drop address memory and spare drop address table are cleared, and the spare drop address memory and spare drop address table are used as the current drop. A cell or packet that operates in a MAC operation type 1 flow or a packet with a cell header or a cell or packet that operates in a MAC operation type, characterized in that an address memory and a drop address table are reserved. A node apparatus for transferring Ruhedda with packets.

  The present invention relates to a node device used in a double ring network, and when there are a plurality of ports exiting from the ring, the node device specifies the source address and port number of a cell or packet input to the port or a packet with a cell header corresponding to the port. Correspondingly, if there is only one port exiting from the ring, the source address of the cell or packet or packet with cell header that has just been entered is written to the working side as one working drop address table and one spare address. A cell or packet or cell header packet that has a drop address table and ADDs to the ring of the node is added to the packet drop header of the call or routing cell payload or the packet with the call or routing cell header in the current drop address table of the node. Or, if there is no source address included in the packet header, if there are multiple ports exiting the ring, the port and its source address, and if there is only one port exiting the ring, only the source address is stored in the table. To the source address included in the packet header or packet header of the packet with the call or routing cell header, or the destination included in the header of the cell or packet or packet with cell header If the source address of the cell or packet or packet with cell header is in the current drop address table, it is sent as is to the destination address. When a ring transmission path to be added corresponding to the destination address of a cell, packet, or packet with cell header is written in the stable table or drop address table, ADD destination ring transmission possessed by the cell, packet, or packet with cell header When the transmission path name is written in the path identification bit and the transmission path is not written, and the ring transmission path to be ADD corresponding to the source address in the working drop address table is written, If the transmission path is written in the ADD destination ring transmission path identification bit of the packet and is not written in the transmission path, it is the lower order of the source address or destination address of the cell or packet or cell header packet The phosphorus indicated by the bit at a specific position Or the destination address of the cell or packet or cell header packet input from the ring transmission path is the above-mentioned current address. When there is a plurality of ADD ports in the drop address table, the data is output to the ADD port written together with the address. When there is only one ADD port, the data is output to the ADD port. If there are multiple ADD ports, the address and the port number written with it are moved to or copied from the two drop addresses tables of the active system. Output to ADD port written with address, A If there is only one D port, the address is moved or copied to the drop address table of the active system and output to the ADD port. When there is no hit for a certain time in the search of the drop address table, the spare drop address table memory is cleared, the spare drop address table is used as the current one, and the drop address table that has been used until then is used as the spare. A node device that forwards a cell or packet with a MAC operation type 1 flow operation or a packet with a cell operation path or a cell or packet with a MAC operation type path or a packet with a cell header.

  The present invention relates to a node device used in a single or double ring network, where the node device has a short bit length of a source address of a cell or a packet or a cell header with a cell header when only one port exits from the ring. Has one current drop address memory and one spare drop address memory with 1 written to the addressing position or 1 corresponding to the source address and one corresponding to the source address. If the bit length is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the lower source is located at the address specified by the upper source address or upper specific source address. Address or lower specific source address Alternatively, the upper source address or the upper specific source address and the lower source address or the lower specific source address corresponding to the upper source address or the upper specific source address or the upper source address or the upper specific source at the address position specified by the lower source address or the lower specific source address. If there is one current drop address memory and one spare drop address memory in which the address is written, and there is write data at the same address location in the memory, the source address to be written is stored in the drop address table. A cell or packet or cell header with a cell header that has the one working drop address table and the spare drop address table that has been written and is added to the ring of the node is the node's working drop address. For less memory, if the number of bits of the source address contained in the packet header or packet header of the packet with the header or packet of the call or routing cell is short, it is long at the addressing location in the memory. In some cases, if there is no write data in the memory addressing location or drop address table of the source address, if there is only one port out of the ring, the bit length of the source address is short in the drop address memory. In this case, 1 is written at the addressing position, or 1 is written corresponding to the source address and correspondingly, and when the bit length of the source address is long, the source address is set to the upper source address or the upper address. Specific source address and lower source address Or lower specific source address, the lower source address or lower specific source address or upper source address or upper specific source address and the lower source address corresponding to the address position specified by the upper source address or upper specific source address. Write the address or lower specific source address, or write the upper source address or upper specific source address at the address location specified by the lower source address or lower specific source address, or the payload of the call or routing cell Or if the number of bits of the source address included in the packet header or packet header of a packet with a cell header is long, the memory address specification position of the upper source address or upper specific source address And the data is not a lower source address or a lower specific source address, or there is write data at the addressed location of the memory at the lower source address or the lower specific source address, and the data is If it is not an upper source address or an upper specific source address, after writing the source address in the drop address table, or in the packet header or packet header of the packet with the payload or cell header of the call or routing cell If the number of bits of the included source address is short, there is write data at that addressed position in that memory, while if it is long, the address of that memory at the higher source address or higher specific source address When there is write data at a fixed position and the data is a lower source address or a lower specific source address, or there is write data at the addressed position of the memory at the lower source address or the lower specific source address and If the data is an upper source address or an upper specific source address, or if the source address is in the working drop address table, the packet header of the call or routing cell payload or packet with cell header or Send to the ring transmission line indicated by the bit at the lower specific position of the source address or cell or packet with cell header or the destination address contained in the packet header, or the cell or packet The cell or packet or packet with cell header that is sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the packet or cell header packet and transferred on the ring input to the node has the bit number of the destination address. If it is short, the specified address where the data is written or the address where the data is written is the destination address of the cell or packet or packet with cell header for the current drop address memory where the drop address is written. If they match, on the other hand, if the bit length of the destination address is long, the data written at the address location specified by the upper destination address is up to the lower destination address. Matches the lower specific destination address, or the data written in the lower destination address or the address location specified by the lower specific destination address matches the upper destination address, or If the destination address is in the working drop address table, the cell or packet or packet with cell header is DROP, while the packet header or packet header of the call or routing cell payload or packet with cell header If the number of bits in the destination address contained in the is a short address, the designated address where the data is written is stored in the current drop address memory where the drop address is written. Is the address written as data does not match the destination address of the cell or packet or packet with cell header, or the packet header or packet header of the call or routing cell payload or packet with cell header If the destination address contained in the address contains a long number of bits and the read data at the addressed location in the memory of the upper destination address does not match the lower destination address or the lower specific destination address, or the lower destination If the read data at the addressed location in that memory at the address or lower specific destination address does not match the upper destination address, or If the destination address is not in the current drop address table, the spare drop address memory and the spare drop address table are searched, and the packet of the cell or packet or cell header has a short bit number of the destination address. For the spare drop address memory in which the drop address is written, the specified address where the data is written or the address where the data is written matches the destination address of the cell or packet or packet with cell header If the data at that address location is moved or copied to the same address location in the current drop address memory, while the destination address bit length is long, If the data written at the address location specified by the upper destination address matches the lower destination address or the lower specific destination address, or is specified by the lower destination address or the lower specific destination address. If the data written at the address location matches the upper destination address, the data at that address location in that memory is either moved to the same address location in the current drop address memory or copied. Or if the destination address is in the spare drop address table, move or copy to the current drop address table and copy the cell or packet or cell header packet DROP, and on the other hand, if the number of bits of the destination address included in the packet header of the call or routing cell payload or packet with cell header or the packet header is short, a spare drop address with a drop address written For memory, if the specified address where the data is written or the address where the data is written does not match the destination address of the cell or packet or packet with cell header, or the call or routing cell If the number of bits in the destination address contained in the packet header or packet header of a packet with a payload or cell header is long, the memory addressing location of the upper destination address Read data does not match the lower destination address or the lower specific destination address, or the read data at the addressed location in the memory of the lower destination address or the lower specific destination address does not match the upper destination address If the destination address is not in the spare drop address table, it is output to the ring transmission line as it is, and the read data is compared for a certain time in the search of the spare drop address memory and the spare drop address table. If the data does not match, the spare drop address memory and the spare drop address table are cleared and the spare drop address memory and MAC operation type 1 flow operation cell or packet or cell header type packet or MAC operation type, characterized in that the drop address table of the equipment is used as a current and the drop address memory and the drop address table that have been used until now are reserved It is a node device that transfers a cell or packet that performs path operation or a packet with a cell header.

  The present invention relates to a node device used in a double ring network, and when there are a plurality of ports exiting from the ring, the node device specifies the source address and port number of a cell or packet input to the port or a packet with a cell header corresponding to the port. Correspondingly, if there is only one port leaving the ring, the source address of the entered cell or packet or packet with cell header is set to the current drop address table and the spare address, one for each ring. In the drop address table, it is configured to write in two working drop address tables. When there are a plurality of ports or cells with cell headers that add to the ring of the node, the port and its source address are specified. ,Rin If there is only one port exiting, only the source address is overwritten in the two working tables, then the packet header or packet of the call or routing cell payload or packet with the call or routing cell header Send to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the source address or cell or packet or packet with cell header included in the header, or ADD of the cell or packet or packet with cell header The destination address of the cell, packet, or packet with cell header that is sent to the ring transmission line indicated by the previous ring transmission line identification bit and entered from the ring transmission line is the address of that cell, packet, or packet with cell header. If there is a plurality of ADD ports in the current drop address table corresponding to the specified ring, it is output to the ADD port written together with the address, and if there is only one ADD port, it is output to the ADD port, and there is no In this case, a spare drop address table corresponding to the ring inputted by the packet is searched. If there is a plurality of ADD ports in the table, the packet is output to the ADD port written together with the address. When one is output to the ADD port, when it is not in the spare, it is output as it is to the ring transmission line, and when there is no hit for a certain time in the search for the spare drop address table of each ring transmission line Clear the memory of the spare drop address table and transfer the ring. A MAC operation type 1-flow operating cell or packet or a cell header-attached packet or MAC operating type, characterized in that a spare drop address table corresponding to a transmission path is used as a current one, and a drop address table that has been used until then is used as a spare. It is a node device that transfers a cell or packet that performs path operation or a packet with a cell header.

  The present invention relates to a node device used in a double ring network, and when there are a plurality of ports exiting from the ring, the node device specifies the source address and port number of a cell or packet input to the port or a packet with a cell header corresponding to the port. Correspondingly, if there is only one port leaving the ring, the source address of the entered cell or packet or packet with cell header is set to the current drop address table and the spare address, one for each ring. In the drop address table, it is configured to write in two working drop address tables. When there are a plurality of ports or cells with cell headers that add to the ring of the node, the port and its source address are specified. ,Rin If there is only one port exiting, only the source address is overwritten in the two working tables, then the packet header or packet of the call or routing cell payload or packet with the call or routing cell header Send to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the source address or cell or packet or packet with cell header included in the header, or ADD of the cell or packet or packet with cell header The destination address of the cell, packet, or packet with cell header that is sent to the ring transmission line indicated by the previous ring transmission line identification bit and entered from the ring transmission line is the address of that cell, packet, or packet with cell header. If there is a plurality of ADD ports in the current drop address table corresponding to the specified ring, it is output to the ADD port written together with the address, and if there is only one ADD port, it is output to the ADD port, and there is no If there is more than one ADD port in the table, search for a spare drop address table corresponding to the ring entered by the packet. Move or copy to the working drop address table and output to the ADD port written with the address. If there is only one ADD port, move or copy the address to the working drop address table. At the same time, if it is output to the ADD port and not in the spare, If there is no hit for a certain time in the search for the spare drop address table of each ring transmission line, the memory of the spare drop address table is cleared and the corresponding ring transmission line is supported. A MAC-operating type 1-flow-operating cell or packet or a packet with a cell header or a MAC-operating path operating, wherein the spare drop address table is used as the current drop address table. A node device that transfers a cell, a packet, or a packet with a cell header.

  The present invention relates to a node device used in a quadruple ring network, in which the quadruple ring has two sets of clockwise and counterclockwise ring configurations, and when there are a plurality of ports exiting from the ring, the cell input to that port corresponding to the port Or, if the source address of a packet or packet with a cell header is associated with a port number, and the port exits the ring, the source address of the entered cell or packet or packet with a cell header is simply written. It has a drop address table, and each ADD port input cell or packet or packet with cell header has two sets of 0 or 1 of the second bit from the least significant bit of the destination address of the cell or packet or packet with cell header. A corresponding pair of ring transmission lines Each set of cells or packets or packets with cell headers is sent to the ring transmission path corresponding to the least significant bit of the destination address, and DROP packets from the ring can be output to all ADD ports, When a cell or packet or a packet with a cell header is input to the source address and the source address is not in the drop address table and there are a plurality of ADD ports, the source address is associated with the ADD port number and the source When there is only one ADD port, the source address is simply written in the drop address table, and if there is, it is sent to the ring transmission line to be sent as it is, and the cell or packet or cell header input from the ring transmission line is attached. packet When the destination address included in the header is in the drop address table and there are a plurality of ADD ports, it is output to the ADD port written together with the address, and when there is only one ADD port, it is simply output. Cell or packet or cell header with MAC operation type path operation or cell or packet or cell header with MAC operation type 1 flow operation, characterized in that output to port and, if not, output to the ring transmission line as it is It is a node device that forwards attached packets.

  The present invention relates to a node device used in a quadruple ring network, in which the quadruple ring has two sets of clockwise and counterclockwise ring configurations, and when there are a plurality of ports exiting from the ring, the cell input to that port corresponding to the port Or, if the source address of a packet or packet with a cell header is associated with a port number, and the port exits the ring, the source address of the entered cell or packet or packet with a cell header is simply written. It has an active drop address table and one spare drop address table. The input cell or packet of each ADD port or a packet with a cell header is the second bit from the least significant bit of the destination address of that cell or packet or packet with a cell header. Bit 0 or 1 selects the corresponding one of the two pairs of ring transmission lines, and is sent to the ring transmission line corresponding to the least significant bit of the destination address of each set of cells or packets or packets with cell headers. A cell or a packet or a packet with a cell header can be output to all ADD ports, and the source address of the cell or packet or cell header with a cell header input to the ADD port is not in the working drop address table, and there are a plurality of ADD ports. In some cases, the source address is associated with the ADD port number, and the source address is simply written in the working drop address table if there is only one ADD port. Or packet or cell A cell that is sent to the ring transmission path indicated by the low-order specific bit of the destination address of the packet with header or the ring transmission path indicated by the cell or packet or the ADD destination ring transmission path selection bit of the packet with cell header, and input from the ring transmission path Alternatively, when the destination address of the packet or the packet with the cell header is in the working drop address table and there are a plurality of ADD ports, the packet is output to the output port written together with the address, and when there is one ADD port Is simply output to the output port, if not, it searches the spare drop address table, and if it is in that table, if there are multiple ADD ports, it outputs to the output port written with that address, When there is one ADD port Is output to the output port as it is, and if it is not output to the ring transmission line as it is, if there is no hit for a certain time in the search of the spare drop address table, the memory of the spare drop address table MAC operation type 1 flow operation cell or packet or cell header-attached packet or MAC operation characterized by clearing and using a spare drop address table as a working current and a current drop address table as a spare It is a node device that transfers a cell or packet or a cell header with a cell path operation.

  The present invention relates to a node device used in a quadruple ring network, in which the quadruple ring has two sets of clockwise and counterclockwise ring configurations, and when there are a plurality of ports exiting from the ring, the cell input to that port corresponding to the port Alternatively, the source address of the packet or packet with cell header is associated with the port number, and if there is only one port exiting the ring, the source address of the entered cell or packet or packet with cell header is made ring-compatible. Each of the current drop address table and the spare drop address table, each of which has one configuration, writes to the four current drop address tables, and the input cell or packet or cell header packet of each ADD port is the cell or packet. Or with cell header The destination address of each set of cells or packets or packets with cell headers is selected from the two sets of ring transmission lines with 0 or 1 of the second bit from the least significant bit of the destination address of the packet. The DROP packet sent from the ring corresponding to the least significant bit is output to all ADD ports, and the cell or packet input to the ADD port or the packet with the cell header is the cell or packet. Alternatively, when there are a plurality of ADD ports, the source address of a packet with a cell header is associated with the source address and the ADD port number, and when there is only one ADD port, the source address is simply set as the source address. 4 working drop address tables Write, send to ring transmission path indicated by lower specific bit of destination address of cell or packet or packet with cell header, or ring transmission path indicated by ADD destination ring transmission path selection bit of cell or packet or packet with cell header and ring When the destination address of a cell, packet, or packet with cell header input from the transmission path is in the working drop address table corresponding to the ring transmission path to which the cell, packet, or packet with cell header is input, and there are multiple ADD ports Is output to the output port written with the address. If there is only one ADD port, it is simply output to the output port. Otherwise, the cell or packet or packet with cell header is input. A spare drop address table corresponding to the ring transmission path is searched, and if there is a plurality of ADD ports in the table, it is output to the output port written together with the address, and there is one ADD port. In this case, the data is simply output to the output port, otherwise it is output to the ring transmission path as it is, and when there is no hit for a certain time in the search of the spare drop address table corresponding to each ring, the spare The MAC address type 1-flow operation is characterized in that the memory of the drop address table is cleared, the spare drop address table corresponding to the ring is used as the current drop, and the drop address table that has been used so far is reserved. Cell or packet or packet with cell header or MAC operational path A node apparatus for transferring cells or packets, or the cell header with packet created.

  The present invention provides a node device used in a double ring network, which has one ADD port, one drop address table, and an ADD source address table corresponding to each ring, and an input cell or packet of the ADD port or a packet with a cell header is the cell. Or, it can be sent to the corresponding 0-system or 1-system ring transmission line by 0 or 1 of the least significant bit of the destination address of the packet or cell header packet, and the DROP packet from each ring transmission line is multiplexed and output to the ADD port Source of cell or packet or packet with cell header input to ADD port distributed with 0 or 1 of least significant bit of destination address of ADD cell or packet or packet with cell header to ring If the address is not in the ADD address table corresponding to the ring transmission path to which the packet is to be sent, the source address is written in the ADD source address table and the drop address table. If there is, the cell, packet or cell header is sent as it is. Cell sent to the ring transmission line indicated by the lower specific bit of the destination address of the attached packet, or the ring transmission line indicated by the ADD destination ring transmission line selection bit of the cell or the packet or the packet with the cell header, and input from the ring transmission line or When the destination address of the packet or packet with cell header is in the drop address table, DROP the cell or packet or packet with cell header. A node device that forwards a cell or a packet with a MAC operation type path operation or a packet with a cell header or a packet with a MAC operation type 1 flow operation or a packet with a cell header, characterized in that the cell operation packet is output to a transmission line. .

  The present invention provides a node device used in a double ring network, which has one ADD port, one current drop address table, one spare drop address table, and an ADD source address table corresponding to each ring. An input cell, packet, or packet with a cell header can be sent to the corresponding 0-system or 1-system ring transmission line with 0 or 1 of the least significant bit of the destination address of the cell or packet or cell-header packet. The DROP cell or packet with packet header or cell header packet can be multiplexed and output to the ADD port, and assigned to 0 or 1 of the least significant bit of the destination address of the ADD cell to the ring or packet with cell header If the source address of the cell or packet or cell header packet input to the specified ADD port is not in the ADD address table corresponding to the ring transmission path to which the packet is to be transmitted, the source address is added to the ADD address table and the working address. Write to the drop address table, if there is, the ring transmission path indicated by the lower specific bit of the destination address of the cell or packet or packet with cell header or the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header If the destination address of the cell or packet input from the ring transmission path and the packet with the cell header is in the current drop address table, D If there is no OP, the spare drop address table is searched, if it is in the table, DROP is performed, and if there is not, it is output to the ring transmission line as it is. When there is no time hit, the memory of the spare drop address table and the two ADD address tables is cleared, the spare drop address table is used as the current one, and the drop address table that has been used until then is used as a spare. A node device for transferring a cell or packet or a cell header with a cell header or a MAC operation type path operating cell or a packet or a cell header with a MAC operation type path.

  The present invention is a node device used in a double ring network, wherein all ring transmission paths are transmitted in parallel within the device and have N stages of cascading table circuits. When a packet with a cell header does not have the source address of the cell or packet or packet with a cell header in the working and spare drop address tables of the node and writes to the working side, the source address is written to the working table, When it is sent to the ring transmission line indicated by the bit at the lower specific position of the destination address of the cell or packet or cell header packet, or the source address of the cell or packet or cell header packet is in the working or spare drop address table In As it is, send it to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell or packet or cell header packet, or send it to the transmission path of the ADD destination transmission path identification bit of the cell or packet or cell header packet The table circuit at each stage has a set of working and spare drop address tables, a first header reading circuit for each ring transmission line, and a ring transmission line corresponding to each packet stream to be ADDed. A second header reading circuit is arranged in parallel, and the cells or packets of each input ring or a packet stream with a cell header are input to the first header reading circuit for each ring transmission path in the first stage. Each second header reading circuit has an ADD transmission line cell or packet to the node. Or, input the cell or packet or packet with cell header distributed for each corresponding ring transmission line by the least significant bit of the destination address of the packet with cell header, or the ADD destination transmission line identification bit possessed by the cell or packet or packet with cell header The cell or packet distributed for each corresponding ring transmission path is input by the second header reading circuit of each stage table circuit, and the source address of the read input cell or packet or packet with cell header is If there is a working or spare drop address table in the table circuit at that stage, it is sent to the corresponding ring transmission line as it is, and there is no working or spare, and the second header reading circuit is not at the Nth stage. in case of, The second header reading circuit of the next stage is sent to the second header reading circuit of the next stage, and in the case of the Nth stage, the cell or the packet or the packet with the cell header is sent to the second header reading circuit of the first stage. The source address of the cell or packet sent to the circuit or the packet with the cell header can be written to the working drop address table of any stage, and the first header reading circuit of the table circuit of each stage has the input cell or If the destination address of the packet or the packet with the cell header is in the current drop address table of the table circuit at that stage, DROP the cell or the packet or the packet with the cell header, otherwise, a spare drop address table of the table circuit at that stage Search for that If there is no packet or packet or cell header-attached packet and the stage is not the N-th stage, the cell or packet or packet with a cell header is output as it is to the first header reading circuit of the next stage. If there is an Nth stage, the output transmission path is configured to send the data to the output transmission line. In the table circuit at each stage, the spare drop address table is searched from the first header reading circuit at each stage for a certain period of time. When there is no hit, the memory of the spare drop address table is cleared, the spare drop address table is used as the current one, and the drop address table that has been used until then is changed to the spare. MAC operation type 1-cell cell or packet or packet with cell header A node apparatus for transferring cells or packets, or the cell header with a packet operates bets or MAC operation type path.

  The present invention is a node device used in a double ring network, wherein all ring transmission paths are transmitted in parallel within the device and have N stages of cascading table circuits. When a packet with a cell header does not have the source address of the cell or packet or packet with a cell header in the working and spare drop address tables of the node and writes to the working side, the source address is written to the working table, When it is sent to the ring transmission line indicated by the bit at the lower specific position of the destination address of the cell or packet or cell header packet, or the source address of the cell or packet or cell header packet is in the working or spare drop address table In As it is, send it to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell or packet or cell header packet, or send it to the transmission path of the ADD destination transmission path identification bit of the cell or packet or cell header packet The table circuit at each stage has a set of working and spare drop address tables, a first header reading circuit for each ring transmission line, and a ring transmission line corresponding to each packet stream to be ADDed. A second header reading circuit is arranged in parallel, and the cells or packets of each input ring or a packet stream with a cell header are input to the first header reading circuit for each ring transmission path in the first stage. Each second header reading circuit has an ADD transmission line cell or packet to the node. Or, input the cell or packet or packet with cell header distributed for each corresponding ring transmission line by the least significant bit of the destination address of the packet with cell header, or the ADD destination transmission line identification bit possessed by the cell or packet or packet with cell header The cell or packet distributed for each corresponding ring transmission path is input by the second header reading circuit of each stage table circuit, and the source address of the read input cell or packet or packet with cell header is If there is a working or spare drop address table in the table circuit at that stage, it is sent to the corresponding ring transmission line as it is, and there is no working or spare, and the second header reading circuit is not at the Nth stage. in case of, The second header reading circuit of the next stage is sent to the second header reading circuit of the next stage, and in the case of the Nth stage, the cell or the packet or the packet with the cell header is sent to the second header reading circuit of the first stage. The source address of the cell or packet sent to the circuit or the packet with the cell header can be written to the working drop address table of any stage, and the first header reading circuit of the table circuit of each stage has the input cell or If the destination address of the packet or the packet with the cell header is in the current drop address table of the table circuit at that stage, DROP the cell or the packet or the packet with the cell header, otherwise, a spare drop address table of the table circuit at that stage Search for The address is moved or copied to the drop address table of the active system at that stage, and the cell or packet or the packet with the cell header is DROP. If there is no address and the stage is not the Nth stage, the cell or A packet or a packet with a cell header is configured to output to the first header reading circuit in the next stage, or in the case of the Nth stage, is configured to send out to the output transmission path. When there is no hit for a certain time in the search of the spare drop address table from the first header reading circuit of the stage, the spare drop address table is cleared and the spare drop address table is used as the current one. Change the drop address table that was previously in use to a spare, DOO is a node device for transferring cells or packets or the cell header packet with operating cells or packets, or a cell header with packet or MAC operation type path which operates MAC operation form 1 flows characterized by.

  The present invention uses a double ring network, and in a node device having one or a plurality of ADD transmission line ports, all ring transmission lines are transmitted in parallel within the apparatus and have N-stage cascaded table circuits. Yes, a cell or packet or cell header packet from each ADD transmission line port is added to the corresponding ring transmission line by the least significant bit of the destination address of the cell or packet or cell header packet in the case of a double ring. If a cell or packet or cell header packet that ADDs to the ring of the node does not have the source address of the cell or packet or packet with cell header in the drop address table at that stage of the node and writes to that table, Source address in its table After entering, send to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell or packet or packet with cell header, or the source address of the cell or packet or packet with cell header is in the drop address table In some cases, the data is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell or packet or cell header packet, or the transmission of the ADD destination transmission path identification bit of the cell or packet or cell header packet is carried. The table circuit at each stage has one drop address table, a first header reading circuit for each ring transmission path, and one or a plurality of ADD transmissions to be ADDed to the corresponding ring transmission path. Road And a second header reading circuit for each cell stream or packet or packet stream with a cell header arranged in parallel, and each input to the first header reading circuit for each ring transmission path in the first stage The second header reading circuit prepared for each one or a plurality of ADD transmission line ports, each of which receives a ring cell or packet or a packet stream with a cell header and is arranged for each of the first stage ring transmission lines, Or a cell or packet or cell header packet distributed to each corresponding ring transmission path by a bit of a destination address of a cell or packet or cell header packet from a plurality of ADD transmission path ports, or a cell or ADD destination transmission path identification of packet or packet with cell header A cell or packet distributed to a corresponding ring transmission line by a bit or a packet with a cell header is input, and each second header reading circuit of the table circuit at each stage is dropped to the second header reading circuit at that stage. If there is no right to write to the address table, the input cell or packet or cell header-attached packet is sent as it is to the second header reading circuit for each ring transmission path in the next stage and further to the second header reading circuit for each ADD transmission path. If the second header reading circuit of the stage has the right to write to the drop address table, if the source address of the read input cell or packet or packet with cell header is in the drop address table of the table circuit of that stage , Send it directly to the corresponding ring transmission line, If there is no ADD transmission line port, only the source address is provided when there is one ADD transmission line port, while if there are a plurality of ADD transmission line ports, the ADD transmission corresponding to the source address and the header reading circuit is provided. After the path port number is written in the drop address table, the cell or packet or packet with cell header is sent to the corresponding ring transmission path. In the first header reading circuit of each stage table circuit, the ADD transmission path port is In one case, if the destination address of the input cell or packet or packet with cell header is in the drop address table of the table circuit at that stage, the cell or packet or packet with cell header is DROP, while the ADD transmission line port is In multiple cases If the destination address of the input cell or packet or packet with cell header is in the drop address table of the table circuit at that stage, the cell or packet or packet with cell header is designated as the destination of that cell or packet or packet with cell header in that table. If there is no DROP on the port written with the address and there is no stage and the stage is not the N-th stage, the packet is output to the first header reading circuit of the next stage, or the N-th stage In some cases, the MAC operation type 1 is configured to send to the output transmission path, and if the drop address table of each stage does not hit in the search for a certain time or longer, the memory of the table is cleared. Cell or packet Alternatively, it is a node device that transfers a packet with a cell header or a cell or a packet with a MAC operation type path or a packet with a cell header.

  In the node device of the present invention described above, the right to write to the drop address table of each second header reading circuit at each stage can be switched at an arbitrary time.

  In the node device of the present invention described above, the right to write to the drop address table of each second header reading circuit at each stage can be switched to the stage where the memory of the drop address table at that stage is cleared.

  In the node device of the present invention described above, the right to write to the drop address table of each second header reading circuit in each stage can be switched to another stage when the drop address table being written is full. it can.

  The present invention uses a double ring network, and in a node device having one ADD transmission line port, the two ring transmission lines are transmitted in parallel in the apparatus and have N-stage cascaded table circuits. The packet from the transmission line port is added to the corresponding ring transmission line by the least significant bit of the source address of the packet, and the table circuit at each stage has one drop address table and the first for each ring transmission line. A second header reading circuit for each packet stream to be ADDed to a ring transmission path corresponding to the header reading circuit, and a transmission ring transmission path for packets input to the second header reading circuit for each second header reading circuit Channel switching address table with the source address of the packet that switches to the reverse ring transmission channel from the normal destination The packet stream of each input ring transmission line is input to the first header reading circuit for each ring transmission path in the first stage, and the second stream arranged for each ring transmission path in the first stage is provided. The header reading circuit is configured to input a packet distributed to each corresponding ring transmission line by the bit of the source address of the packet from the ADD transmission line port. In each second header reading circuit of each stage table circuit, If there is no right to write to the drop address table at that stage, the input packet is sent as it is to the second header reading circuit in the next stage. If the source address is in the drop address table of the table circuit at that stage, it is sent directly to the corresponding ring transmission line and the drop address is sent. If not at the stave, the source address is written into the drop address table, and then the packet is sent to the corresponding ring transmission path. The first header reading circuit of the table circuit at each stage receives the destination of the input packet. If the destination address is in the drop address table of the table circuit at that stage, the packet is DROP, otherwise, the packet is output as it is to the first header reading circuit at the next stage. If there is no hit for a certain period of time, it has a function of clearing the memory of the table. Further, the packet is input to the first header reading circuit of the table circuit at a certain stage, and the lowest address of the source address of the packet Packets whose bits do not match the system of the input ring transmission path If the source address of the packet is in the drop address table of the stage, the second header of the stage corresponding to the ring transmission path of the system that matches the least significant bit of the source address of the packet A process of writing the source address of the packet to the transmission path switching address table corresponding to the reading circuit is performed, or the packet is input to the first header reading circuit of the table circuit at a certain stage, and the source address of the packet is updated. When the low-order bit is a packet that does not match the system of the input ring transmission path, the destination address of the packet is in the drop address table of that stage, and the transmission path switching bit is set in the packet, Ring of the opposite system to the least significant bit of the source address of the packet A process for writing the destination address of the packet to the transmission path switching address table corresponding to the second header reading circuit of the stage corresponding to the transmission path is performed. If the source address of the packet input to the second header reading circuit is in the transmission path switching address table corresponding to the second header reading circuit, a transmission path switching bit is set in the header of the packet, A packet that performs a MAC operation type 1-flow operation or a MAC operation type path operation, characterized in that the second header circuit has a function of switching so that it is sent to a ring transmission line opposite to the ring transmission line that is normally sent out. Is a node device that transfers.

  In the node device of the present invention described above, for example, the drop address memory is configured by RAM, SRAM, or CAM.

  In the above-described node device of the present invention, for example, the drop address memory is constituted by a CAM.

  In the node device of the present invention described above, the MAC address of the cell or packet or the cell header packet with the MAC operation type path is the MAC address of the MAC in MAC packet in which the MAC address is added to the IP over MAC packet. Or a packet that is a global IP address that has the private IP address of the IP over MAC packet in its option area, or the MAC destination address of the IP over MAC is IP over MAC. A packet that is a MAC address of a packet that is a common address or an address that operates a path MAC is two VPI addresses of a double cell header of an ATM cell having a double cell header. A cell that is less or a path MAC-operating address is one VPI address of a double-cell header of an ATM cell with a double-cell header, or a path MAC-operating address is prefixed with another VPI before the cell header A cell that has two VPI addresses in the cell header of an ATM cell, or a cell whose path MAC operates is a VPI address in a cell header of an ATM cell, or an address that operates in a path MAC is a MAC of a path ATM cell over MAC A cell with an address or a MAC address with path cell operation is a packet with a cell header that is two VPI addresses of a double cell header of a MAC packet with a double cell header, or a MAC packet with an address that operates with a path MAC is a MAC packet with a double cell header. A packet with a cell header which is one VPI address of a double cell header of the second cell, or a packet with a cell header which is two VPI addresses of a cell header of a MAC packet whose path MAC operation address has another VPI before the cell header, or The path MAC address can be a packet with a cell header which is the VPI address of the cell header of a MAC packet having a cell header.

  In the node device of the present invention described above, the MAC operation type cell or packet or the cell header-attached packet is a packet in which the address for 1 flow MAC operation is the MAC address of the IP over MAC packet, or 1 flow MAC operation A packet whose MAC destination address is a common address and whose MAC source address is a single address, a packet whose MAC address is a MAC address of an ARP packet, or A packet whose IP flow MAC address is an IP address of an IP over MAC packet, or a packet whose 1 flow MAC address is an IP address of an IP packet, or 1 flow MAC The cell to be created is an ATM cell over MAC MAC address, or the address that operates one flow MAC is the address of two VPI + VCI or two VCIs of a double cell header of an ATM cell having a double cell header. A cell having a single cell, a single VPI + VCI address of a double cell header of an ATM cell having a double cell header, or a single VCI address, A cell whose cell header is the VCI address of a cell, or a cell whose one-flow MAC operation address is a MAC address of an ATM cell over MAC, or a MAC whose one-flow MAC operation address is a double-cell header Double cell header of VPI + VCI or cell header packet with a VCI addresses of packets or address to operate 1 flow MAC is, may be a cell header packet with a cell header VPI + VCI or VCI address of MAC packets with the cell header.

  The node device of the present invention has a transmission path switching bit area in the header of the packet to be transferred, and the least significant bit of the ADD transmission path selection bit or source address of the packet input from the ring transmission path is the ring transmission path. If the source address of the packet is in the drop address table, that is, the node device is the ADD node of the packet, the ring transmission among the packets to be ADDed to the node device. A transmission path in the header of a packet that has the same source address as the packet input from the path and normally selects a ring transmission path opposite to the ring transmission path to which the packet input to the ring transmission path is transferred The switch bit is set and the packet is added to the ADD transmission path selection bit or software. The normal ring transmission line system that was sent matches the least significant bits of the scan address can be added a function of switching to deliver the ring transmission path of the reverse system.

  Furthermore, the node device of the present invention is a case where the ADD transmission path selection bit or the least significant bit of the source address of the packet input from the ring transmission path does not match the ring transmission path system, and the destination address of the packet Is in the drop address table, that is, the node device is the receiving node of the packet and the transmission path switching bit is set in the packet, the destination address of the packet among the packets to be ADDed to the node device The transmission path switching bit is set in the header of the packet having the same source address as that of the reverse transmission packet and normally selecting the same ring transmission path as the ring transmission path input by the received packet, and the ADD transmission path selection bit. Or the least significant bit of the source address Can be added a function of switching to deliver the ring transmission path in the reverse system is usually transmitted once was based ring transmission path matches the.

  Furthermore, the node device of the present invention provides a reverse bit area in the header of the packet, the source address of the packet arriving from the ring transmission path is in the drop address table, that is, the node device is the ADD node of the packet, and the packet Is transmitted from the ring transmission path to be ADDed to the node apparatus, which is a ring transmission path that does not match the ADD transmission path selection bit or the least significant bit of the source address of the packet. A transmission path switching bit is set in the header of a packet that has the same source address as the packet and normally selects a ring transmission path reverse to the ring transmission path to which the packet input to the ring transmission path is transferred. , Bottom of ADD transmission path selection bit or source address Does not match the ADD transmission path selection bit of the packet or the least significant bit of the source address in the node device switched to send to the ring transmission path of the reverse system to the ring transmission path of the normal system that matches the bit From the ring transmission path, the destination address of the packet is in the drop address table, that is, the node device is the receiving node of the packet, the packet has the transmission path switching bit set, and the destination of the packet. When a packet whose destination address is the same as the source address of the packet whose destination is changed, that is, a reverse packet, arrives on the ring transmission path opposite to the normal transmission ring transmission line. Sent to the opposite ring transmission line And the source address and destination address of the copied packet are exchanged, and the node transmission device having the reverse bit set is the receiving node device, and the ring transmission path from which the packet is normally transmitted Is sent to the reverse ring transmission line, and when the packet with the reverse bit set arrives at the node device, the source address and the destination address are exchanged, and the packet sent with the reverse bit set Can be added to stop sending

  Furthermore, the node device of the present invention has a loopback function of a ring transmission path, and is a node device that detects a transmission path failure, and is on the side that detects a ring transmission path that has not detected a transmission path failure. If a loop with a reverse bit is detected on a ring transmission line that has not yet been looped back to the transmission line and a transmission line failure has not been detected, a function for looping back the ring transmission line can be added. .

  Thus, in order to solve the above problems, the ring node device of the present invention causes a packet to be ADDed to the ring to rise to the ring transmission path indicated by the bit at the lower specific position of the source address or destination address of the packet, and The packet that forwards the packet is DROP only when the address of the drop address table in which only the drop address is written corresponding to the port exiting from the ring matches the destination address of the packet, and is otherwise passed through.

  Therefore, in the present invention, when going up to the ring, the address indicating the destination is not required for the ring transmission line port. In addition, an address indicating the destination of a packet to be transferred on the ring is not required for the ring port. This does not determine whether a packet without a destination for each node device is an unknown packet, but searches a table of all nodes on the ring that are to be an unknown packet when there is no destination at all nodes on the ring. This is possible by using the one-stroke method.

  For this reason, in the present invention, only when the source address of a packet input from the ring is in the MAC address table (drop address table), the function of attaching a multi-round bit is assumed for each node, assuming that the packet has made one round of the ring. The device is characterized by having. This function is also considered when a loopback occurs due to a transmission line failure. In addition, in the case of an isolated ring, the multi-round packet is made an unknown packet (copy packet), and is copied once more to the ADD port in each node device, and the copied packet that has made one round is discarded.

  Also, in a tree-structured ring network, a multi-round packet is left as a higher ring at a node that goes up to the upper ring, and if there is no destination in the highest ring, it is converted to a copy packet and the copy packet is sent to the subordinate ring. Distribute.

  Further, in the case of a packet that has gone up to both ends of the ring network having a skewered configuration, the packet is transferred to the adjacent ring at the node that moves to the adjacent ring as the multi-round packet.

  In the case of a packet that has risen to a ring other than the ring at both ends of the ring network having a skewered configuration, and a packet that has risen to the ring of a planar mesh connection ring network, a multi-round packet is a node that moves to an adjacent ring as a copy packet Then, the packet is copied to the adjacent ring, and if there is no destination in the adjacent ring, the packet is made into a multi-round packet and a copy packet is transferred to the adjacent ring. However, in the case of skewered rings and planar mesh connection ring networks, it is assumed that the destination server or terminal has raised a one-path setup packet having the source address of the server or terminal up to the ring edge. . Otherwise, it is necessary to make a multi-round packet with no destination on each ring a copy packet and copy it to all nodes on that ring.

  By using the above method, the node device of the present invention does not need to write the source address of the input packet from the ring port in the MAC table (drop address table). This is the same in the case of a ring for setting a ring path route and in a ring for which a fixed path is set. As a result, a bit is required for the packet to determine whether an input packet from the ADD transmission line is sent out to the clockwise ring transmission line or to the counterclockwise ring.

  In the present invention, the lower specific bit of the source address or destination address of the packet is used as this bit. The source address or destination address may be an IPv4, IPv6 intermediate bit, or MAC address.

  In the ring node device of the present invention, instead of using the timer function for each MAC address in the MAC address table, the working MAC address table and the spare MAC address table are used. Usually, the working MAC address table is used and input to the ADD port. If the source address of the packet to be processed is not in the current MAC address table, the current address is written even if it is in the spare MAC address table. If the destination address of the packet input from the ring transmission path is in the current MAC address table, DROP is performed. If there is no destination address in the spare MAC address table, DROP is performed. If not, the packet is sent through the output ring transmission path.

  As a result, the number of search hits in the spare MAC address table is reduced, and when the search hit does not occur for a certain period of time, the memory in the spare MAC address table is cleared and the names of the current and spare tables are exchanged. Switch to the control that performs the same operation. As a result, MAC addresses that are no longer used are deleted.

  In order to solve the above problems, the ring network of the present invention has a network structure in which the destination of an unknown packet can be fixed, such as a network structure in which rings are connected in a tree shape or a network in which ring connections are made in a skewered manner. , And when there is no packet destination on the ring, a one-stroke network is used to go up to the upper ring or go up to the adjacent ring.

  As a result, if there is no destination even in the highest ring, the unknown packet that has gone up to the highest ring is converted to a copy packet, and the copy packet is distributed only to the subordinate ring. Since only one is performed for the path and not for the ring transmission path output, the path is automatically set by a response from the receiving terminal, so that the flooding as in the conventional example becomes unnecessary. A large net can be realized.

  However, when a copy packet is sent to a tree ring network that is the highest mesh network destination, the copy packet must be distributed to all tree ring networks under the mesh network. However, when the connection destination edge node or server accommodated in this network raises the one-path setting packet having the source address to the highest ring, it is not necessary to convert it into the copy packet in the highest ring.

  In the present invention, when the highest ring is reached and there is no destination in the highest ring, it is sent to the Internet network. A response packet of a packet that reaches the receiving terminal via the Internet network is sent to the one-stroke network, and a response path in the one-stroke network is automatically set. This eliminates the need to send an unknown packet to all terminals in the network when using an existing Internet network.

  In the present invention, an edge node device or a distribution service company or distribution service device located below the lowest ring in the network sends a one-way route packet having only its source address to all edge nodes or terminals in the network. Until then, it distributes radially and sets one path, and the corresponding terminal can communicate using that path.

  According to the present invention, there is provided a large-scale network that can realize a high-speed node device that can be applied to a MAC-operating IP address of a higher-level network that requires a large-scale table and that is simple in operation, capable of high-speed operation, is less likely to be congested. It can be realized, can be realized only by using the free area of the conventional packet header, and can be applied to a mobile network.

It is a figure which shows Example 1 of a node apparatus. It is a figure which shows Example 2 of a node apparatus. It is a figure which shows Example 3 of a node apparatus. It is a figure which shows Example 4 of a node apparatus. It is a figure which shows Example 5 of a node apparatus. It is a figure which shows Example 6 of a node apparatus. It is a figure which shows Example 7 of a node apparatus. It is a figure which shows Example 8 of a node apparatus. It is a figure which shows Example 9 of a node apparatus. It is a figure which shows Example 10 of a node apparatus. It is a figure which shows Example 11 of a node apparatus. It is a figure which shows Example 12 of a node apparatus. It is a figure which shows Example 13 of a node apparatus. It is a figure which shows Example 14 of a node apparatus. It is a figure which shows Example 15 of a node apparatus. It is a figure which shows Example 16 of a node apparatus. It is a figure which shows Example 16 of a node apparatus. It is a figure which shows Example 1 of a one-stroke writing ring network. It is a figure which shows Example 2 of a one-stroke writing ring network. It is a figure which shows Example 3 of a one-stroke writing ring network. It is a figure which shows Example 4 of a one-stroke writing ring network. It is a figure which shows Example 5 of a one-stroke writing ring network. It is a figure which shows Example 6 of a one-stroke writing ring network. It is a figure which shows Example 7 of a one-stroke writing ring network. It is a figure which shows Example 8 of a one-stroke writing ring network. It is a figure which shows Example 9 of a one-stroke writing ring network. It is a figure which shows Example 10 of a one-stroke writing ring network. It is a figure which shows the structure of a MAC and IP converter. It is a figure which shows Example 11 of a one-stroke writing ring network. It is a figure which shows Example 12 of a one-stroke writing ring network. It is a figure which shows Example 13 of a one-stroke writing ring network. It is a figure which shows Example 14 of a one-stroke writing ring network. It is a figure which shows Example 15 of a one-stroke writing ring network. It is a figure which shows Example 16 of a one-stroke writing ring network. It is a figure which shows the conventional MACSW. It is a figure which shows the ring operation | movement of RPR of a prior art. It is a figure which shows the transfer operation | movement of the unicast packet in that case after the MAC conversion table of each node in RPR which is a prior art is completed.

  An embodiment of the node device of the present invention is shown in FIG. FIG. 1 shows a configuration of a node device that transmits a MAC path packet using a 0-system ring transmission path and a 1-system ring transmission path. The drop address table 102 includes a path MAC packet that is ADDed by this node. The source address of is written in advance.

  A packet to be ADDed to this node is sent to the ring transmission path indicated by the least significant bit of the source address or destination address of the ADD packet by the packet distribution circuit 101.

  In this example, the least significant bit of the source address A of the MAC packet MACBA is 0. In this example, the packet distribution circuit 101 is an example in which the source address A of the ADD packet goes up to the ring without checking whether the source address A is in the drop address table 102, and high speed operation can be expected, but there is no security, so check with the table There is also an example that goes up to the ring after that.

  On the other hand, the packet arriving at this node from the ring reads the MAC destination address of the packet arriving at the 1-system header reading circuit 104 or 0-system header reading circuit 103, and the address is the drop address table 102. If there is not, drop the packet, and if not, pass the packet through and send it to the output ring transmission line.

  In FIG. 1, since the destination address A of MACAB input from the system 1 ring transmission line is in the drop address table 102, the packet is dropped on the DROP transmission line. The BUF shown in the figure is a buffer for temporarily accumulating packets, and is required at the packet junction and header reading circuit.

  In this embodiment, the drop address table is an example, and in this case, it is a good example when aiming at cost reduction in the low speed system, but in the case of using in the high speed system, the 0 system header reading circuit 103 is used. This causes a problem because the search for the drop address table from 1 and the search for the drop address table from the 1-system header reading circuit 104 overlap.

  As a countermeasure, there are two drop address tables for the 0-system ring transmission path and the 1-system ring transmission path, and in these two tables, the same address of the MAC source address of the path packet to be ADDed at this node, A written example is shown in Example 2 of FIG.

  The example of FIG. 2 is the same as that of the first embodiment except that the header reading circuit 103 or 104 searches the dedicated drop address table and processes the arrival packet from the ring, and thus the description is omitted. To do.

  In the first and second embodiments, the MAC-type operation is an example in which the MAC is operated. However, in the same node configuration, the MAC-type operation may be a cell, a MAC packet with a cell header, or a MAC in MAC packet. It is. However, in the case of a cell or a MAC packet with a cell header, the source address is not included in the cell header, so the source address is the source address in the payload of the calling cell or the routing cell, or the MAC with the calling cell header. It is necessary to use the source address in the MAC header of the packet or the MAC packet with the routing cell header.

  Next, FIG. 3 shows a third embodiment of the node device of the present invention. FIG. 3 is an example used for packet transmission for a path or one flow, and has an active and spare drop address table. In FIG. 3, 105 is a working drop address table, 106 is a spare drop address table, and other circuits are the same as those in FIG. The operation is shown below.

  The packet MACBA input to the node from the ADD transmission path is read by the packet distribution circuit 101 and the source address of the packet is read. If the address is not in the current drop address table 105, the source address is written to the table. In this case, the packet is sent as it is to the 0-system ring transmission path indicated by the least significant bit (0 in this example) of the source address A of the packet.

  On the other hand, for a packet arriving at this node from the ring, the header reading circuit 103 or 104 reads the destination address of the packet and searches whether the address is first in the drop address table 105 on the working side. If there is no packet, the spare drop address table 106 is searched. If there is, the packet is dropped. If there is no packet, the packet is directly passed through the output ring transmission path and transmitted. .

  In the example of FIG. 3, MACAB arrives at the node from the 1-system ring transmission line, and since its destination address A is in the working drop address table 105, the packet is sent out to the DROP transmission line.

  In such an operation, if the spare drop address table does not hit in the search for a certain time or longer, it is determined that the source address in the spare drop address table is out of date, and all the addresses in the table are deleted. While clearing the memory, the spare drop address table is used as a working drop address table, and the drop address table that has been used so far is changed to a spare drop address table.

  Next, FIG. 4 shows a fourth embodiment of the node device of the present invention. FIG. 4 shows an example used for packet transmission for a path or 1 flow, and has an active and spare drop address table, and also has a 0-system and 1-system drop address table. In FIG. 4, reference numeral 107 denotes a 0-system active and spare drop address table, reference numeral 108 denotes a 1-system active and spare drop address table, and other circuits are the same as those in the third embodiment. This embodiment is an example having drop address tables corresponding to the 0-system and 1-system ring transmission paths so as to enable high-speed operation from the third embodiment. Even if the source address of the packet to be ADD is written in both the drop address tables in the 0-system and 1-system drop address tables, and the ring transmission path loops back, the node from the ring transmission path The packet can be dropped by looking at the drop address table corresponding to the ring input to, so that high speed operation is possible.

  If the source address of the packet MACBA input to the packet distribution circuit 101 is read and the address is not in one of the current drop address tables, it is written into both of the current drop address tables, and if there is, the source address of the packet is left as it is. To the ring transmission line indicated by the least significant bit. On the other hand, packets input from the ring transmission path to the device are processed by searching a dedicated drop address table corresponding to the input ring. In the third and fourth embodiments, the MAC type operation is an example in which the MAC is operated. However, in the same node configuration, the MAC type operation may be performed for a cell, a MAC packet with a cell header, or a MAC in MAC packet. It is. However, in the case of a cell or a MAC packet with a cell header, since the source address is not included in the cell header, the source address is included in the payload of the calling cell or the routing cell, or with the calling cell header. It is necessary to use the source address in the MAC header of the MAC packet or the MAC packet with the routing cell header.

  Next, FIG. 5 shows a fifth embodiment of the node device of the present invention. FIG. 5 is an example of a node device having a plurality of ADD ports in a double ring for transferring an IP packet that performs MAC operation. In FIG. 5, reference numeral 10 is a node device, reference numeral 11 is a drop address table that stores a port number corresponding to the source address of an IP packet input to ADD ports 1 and 2, reference numeral 12 is a 1-system ring transmission line, and reference numeral 13 is Reference numeral 0 represents a ring transmission path, reference numeral 14 represents a loopback, reference numeral 15 represents a packet header reading circuit for the ring transmission path, and reference numeral 16 represents a packet header reading circuit for the ADD transmission path. IPBA0 shown in the figure indicates that the destination address is B, the source address is A, and the ADD destination transmission path identification bit of the packet is a 0-system ring transmission path.

  The operation is shown below. The packet used in this node equipment has a ring transmission path identification bit, and transmits a ring transmission path identification bit transmitted / received between the packet transmission node and the reception node, and transmits a bit opposite to the ring transmission path identification bit of the reception packet at the transmission node. It is set by using the ring transmission path identification bit of the packet. The node device has a plurality of ADD ports and one drop address table (11) in which the source addresses of the packets input to each ADD port and the port numbers are written. The input packet of each ADD port is the ring transmission of the packet. The DROP packet transmitted from the ring corresponding to the path identification bit is output to all ADD ports.

  If the source address is not in the drop address table, the packet input to the ADD port is written in the drop address table (11) in correspondence with the source address and the ADD port number. If the destination address of the packet sent to the transmission line and input from the ring transmission line is in the drop address table, it is output to the ADD port written together with the address, and if there is not, the ring transmission line identification of the packet When the bit matches the input ring transmission line name and the source address is in the drop address table, the multi-round bit is added, and otherwise, it is output to the ring transmission line as it is.

  In FIG. 5, the ring transmission line identification bit is used to select the transmission destination ring transmission line of the packet input from the ADD port and to determine the addition of the multi-round bit, but the least significant bit of the source address of the ADD packet is used. Also good. The reason why the ring transmission path selection bit or the least significant bit of the source address is necessary for the determination of the addition of the multi-round bit is that it operates normally even when a loopback occurs. A packet input from the ring transmission path does not leave a source address. If there is no destination, the data is output to the ring transmission line as it is. In FIG. 5, it is assumed that the traffic between the ports 1 and 2 is processed by the lower device. As described above, the flooding of unknown packets does not occur in FIG.

  FIG. 6 shows a sixth embodiment of the node device of the present invention. 6 has a working drop address table (17) and a spare drop address table (18) having an all-zero setting function that can clear the memory of the drop address table if no hit occurs for a certain period of time even after searching. It is.

  The operation will be described below. As in FIG. 5, the packet used in the node device uses a ring transmission path identification bit. It has one active drop address table (17) and one spare drop address table (18) in which a plurality of ADD ports and the source address and port number of the packet input to each ADD port are written, and the input packet of each ADD port Is sent to a ring transmission line corresponding to the ring transmission line identification bit of the packet, and a DROP packet from the ring can be output to all ADD ports.

  If the source address of the packet input to the ADD port is not in the working drop address table (17), the source address is associated with the ADD port number and written to the working drop address table (17). If the destination address of the packet sent to the ring transmission path to be output and entered from the ring transmission path is in the working drop address table (17), it is output to the ADD port written together with that address, and if not, it is reserved The drop address table (18) of the packet is retrieved, and if it is in the table, it is output to the ADD port written together with the address. It matches the name of the ring 1 and its source If the address is in the working drop address table (17), the multi-round bit is added, if not, the spare drop address table (18) is searched, if there is, the multi-round bit is added, otherwise Output to the ring transmission line. If there is no hit for a certain time in the search of the spare drop address table (18), the memory of the spare drop address table (18) is cleared, and the current and spare names of the current and spare drop address tables are cleared. Control to operate in the same way as the replacement.

  Even if the source address of the packet input to the ADD port is in the spare drop address table (18), if the source address is not in the active drop address table, the source address is written to the active side and the packet input from the ring transmission path is First, the current drop address table (17) is searched, thereby reducing the number of searches for the spare drop address table and making it easy to set all zeros in the table.

  FIG. 7 shows a seventh embodiment of the node device according to the present invention. FIG. 7 shows an example of a quadruple ring, one ADD port and one drop address table (19). The drop address table (19) does not include a port number.

  The operation will be described below. The quadruple ring shown in FIG. 7 has two sets of clockwise and counterclockwise rings, and has a ADD port and a drop address table (19) for storing the source address of a packet input to the ADD port. The packet selects one of the two pairs of ring transmission lines with 0 or 1 of the second bit from the least significant bit of the source address of the packet, and each set corresponds to the least significant bit of the packet. In this configuration, a ring transmission line is selected.

  When a packet is input to the ADD port and the source address is not in the drop address table (19), the source address is written in the drop address table (19). If the destination address of the packet input from the ring transmission path is in the drop address table (19), the packet is dropped, and if not, the least significant bit of the source address of the packet is the input ring transmission path 0 system When it matches with the 1st system and the source address is in the drop address table (19), a multi-round bit is assigned, and otherwise, it is output to the ring transmission line as it is. In FIG. 7, the transmission destination ring transmission path of the ADD packet is fixed for each flow, but the upstream and downstream flows do not always grab the same set of rings, so that the receiving side must join.

  FIG. 8 shows an eighth embodiment of the node device according to the present invention. In FIG. 8, reference numeral 20 is a working drop address table, reference numeral 21 is a spare address table, and others are the same as in FIG.

  The operation will be described below. FIG. 8 has one working drop address table (20) in which the source address of a packet input to the ADD port and the ADD port is written, and one spare drop address table (21). When the source address is not in the working drop address table (20), the source address is written into the working drop address table, and if there is, the destination address of the packet inputted from the ring transmission line is sent to the ring transmission line to be sent as it is. If the address is in the working drop address table (20), the packet is dropped. If there is no address, the spare drop address table (21) is searched. If it is in the table, the packet is dropped. Lowest source address of Multi-bit bits are assigned if the source address matches the 0-system or 1-system of the input ring transmission path and the source address is in the working drop address table (20), otherwise the spare drop address table (21) In some cases, a multi-round bit is assigned, and in other cases, it is output to the ring transmission line as it is.

  If there is no hit for a certain time in the search of the spare drop address table (21), the memory of the spare drop address table (21) is cleared, and the current and spare names of the current and spare drop address tables are cleared. Control to operate in the same way as the replacement.

  FIG. 9 shows a ninth embodiment of the node device according to the present invention. The feature of FIG. 9 is that an ADD source address table (22) is provided for each ADD destination ring transmission line, so that when an ADD packet is input, the search of the source address is not a drop address table but an ADD source address that is easy to search. The table (22) is used. The operation will be described below.

  FIG. 9 shows a double ring network having one ADD port, one drop address table, and an ADD source address table (22) corresponding to each ring. The input packet of the ADD port is the least significant bit of the source address of the packet. 0 or 1 can be sent to the corresponding 0-system or 1-system ring transmission line, and the DROP packet from each ring transmission line can be multiplexed and output to the ADD port.

  If the source address of the packet input to the ADD port is not in the ADD source address table (22) corresponding to the ring transmission path to which the packet is to be transmitted, the source address is converted into the ADD source address table (19) and the drop address table ( If the destination address of the packet input from the ring transmission path is in the drop address table (19), DROP the packet, and if there is no If the least significant bit 0 or 1 of the source address of the packet matches the 0 system or 1 system of the input ring transmission path and the source address is in the drop address table (19), a multi-round bit is added. Other than that, it goes out to the ring transmission line as it is. To.

  FIG. 10 shows a tenth embodiment of the node device according to the present invention. 10 has an active drop address table (23) and a spare drop address table (24), and a spare drop address table (24) when no more than a certain time is hit in the spare drop address table search. And the memory of the two ADD source address tables are simultaneously cleared, and control is performed so that the current and spare names in the current and spare drop address tables are exchanged. This is to reduce the source address search burden. The operation will be described below.

  FIG. 10 shows an ADD port input packet having one ADD port, one working drop address table (23), one spare drop address table (24), and an ADD source address table (22) corresponding to each ring. Is a configuration in which the least significant bit 0 or 1 of the source address of the packet is sent to the corresponding 0-system or 1-system ring transmission path.

  If the source address of the packet input to the ADD port is not in the ADD source address table (22) corresponding to the ring transmission path to which the packet is to be transmitted, the source address is added to the ADD source address table (22) and the working drop address table. If the destination address of the packet input from the ring transmission path is in the working drop address table (23), DROP is performed. A spare drop address table (24) is searched, and if it is in the table, DROP is performed. If there is not, the least significant bit 0 or 1 of the source address of the packet is identical to the 0 system or 1 system of the input ring transmission path. And the source address is the working drop address If it is in the stable (23), a multi-round bit is assigned; if not, a spare drop address table (24) is searched; if there is, a multi-round bit is assigned; If there is no hit for a certain time in the search of the spare drop address table (24), the spare drop address table (24) and the two ADD source address table memories are cleared. Then, control is performed to perform the same operation as exchanging the current and spare names in the working and spare drop address tables.

  In the fifth to tenth embodiments, the MAC type operation is an IP address. However, in the same node configuration, the MAC type operation may be a cell, a MAC packet with a cell header, or a MAC in MAC packet. Is possible. However, in the case of a MAC packet with a cell or cell header, since the source address is not included in the cell header, the source address is either the source address in the payload of the calling cell or the routing cell or the MAC packet with the calling cell header or It is necessary to use the source address in the MAC header of the MAC packet with the routing cell header.

  Next, FIG. 11 shows an eleventh embodiment of the node device. 11, reference numeral 110 is a working drop address table, reference numeral 111 is a 1-system ADD transmission path header reading circuit, reference numeral 112 is a 0-system ADD transmission path header reading circuit, reference numeral 113 is a 1-system ADD address table, reference numeral Reference numeral 114 denotes a 0-system ADD address table, and other circuits are the same as those in the fourth embodiment.

  The feature of this embodiment is that it has a 0-system and a 1-system ADD address table. This table contains information for switching the transmission ring destination and the transmission ring destination of the ADD packet so far in order to switch from loopback to steering when a ring transmission path failure occurs. Although not written, at the time of loopback, the source address or destination address of the ADD packet and the transmission ring destination of the packet are written. The written information is erased because the steering is released when the transmission path failure is restored and recovered. Packets input from the ADD transmission path to the packet distribution circuit 101 are distributed according to the least significant bit of the source address and sent to the 0-system or 1-system ADD transmission path header reading circuit 111 or 112.

  For the packet, the header of the packet is read by the header reading circuit 111 or 112, and the source address is searched for in the drop address table 110. If not, the source address is written in the table. In some cases, it is checked whether the source address or destination address of the packet is in the ADD address table, and if not, it is sent to the ring corresponding to the least significant bit of the source address or destination address of the packet. . Since other operations are the same as those in the fourth embodiment, the description will be stopped.

  Next, FIG. 12 shows a twelfth embodiment of the node device. In this embodiment, the first to eleventh embodiments described above are examples in which the 0-system transmission path and the 1-system transmission path are bidirectionally mounted in the node device, whereas the 0-system transmission path And the 1-system transmission line and the ADD transmission line are mounted so that they are transmitted in parallel in the node device. This facilitates access from the header reading circuit to the drop address table.

  In FIG. 12, reference numeral 115 is a 0 system ADD transmission path header reading circuit, reference numeral 116 is a 1 system ADD transmission path header reading circuit, reference numeral 117 is a 0 system ring transmission path header reading circuit, and reference numeral 118 is a 1 system ring transmission. The path header reading circuit, reference numeral 119 is a 0-system drop address table, and reference numeral 120 is a 1-system drop address table. The operation of this apparatus will be described below.

  The packet MACBA input from the ADD transmission path to the packet distribution circuit 101 is distributed according to the least significant bit of the source address. In this example, since the least significant bit of the source address A is 0, it is sent to the 0-system ADD transmission path header reading circuit 115. In the header reading circuit 115, the source address of the packet is read. If the source address is not in either the 0-system or 1-system drop address table, the source address is written in both drop address tables, In some cases, the device joins the 0-system transmission line as it is in the apparatus and then is sent to the 0-system ring transmission line.

  On the other hand, the packet arriving at the node device from the ring transmission path is read by the header reading circuits 118 and 117 for the ring transmission path, the destination address of the packet is read, and the address is stored in the drop address table corresponding to the input ring. If there is, it is dropped, and if not, it is passed through and sent to the output ring transmission line.

  Next, FIG. 13 shows a thirteenth embodiment of the node device according to the present invention. In FIG. 13, reference numerals 25-1 and 25-2 are table circuits, reference numeral 26 is a working drop address table, reference numeral 27 is a spare drop address table, reference numeral 28 is a packet header reading circuit for a ring transmission path, and reference numeral 29 is A packet header reading circuit for an ADD transmission path corresponding to each ring transmission path, reference numeral 30 is a packet distribution circuit based on the least significant bit of the source address of the packet from the ADD transmission path, and reference numeral 31 is an ADD to be sent to the ring transmission path 12 The packet stream, 32 is an ADD packet stream to be sent to the ring transmission path 13, 33, 34 is a packet stream in which the source address of the packet input to the header reading circuit 29 is not in the working drop address table, and 35 is a loopback switch. is there.

  The feature of FIG. 7 is that the table circuit (25) including the working drop address table (26) and the spare drop address table (27) is cascaded in N stages to reduce the search time for one drop address table. That is. FIG. 7 shows a two-stage configuration example. The operation will be described below.

  In a node device used for a double ring network, two ring transmission lines are transmitted in parallel in the device, and have N stages of cascading table circuits. An ADD packet is generated by the circuit 30 by the least significant bit of the source address of the packet, The packet is distributed and added to the corresponding ring transmission path, and the table circuit at each stage includes a set of drop address tables for the current (26) and backup (27) and a first header for each ring transmission path. A reading circuit (28) and a second header reading circuit (29) for each packet stream to be ADD are arranged in parallel on the corresponding ring transmission path, and the first header reading for each ring transmission path in the first stage The circuit (28) receives the packet stream of each input ring, and each second header reading circuit (29) in the first stage receives the ADD transmission path packet to the node. The packet distributed to each corresponding ring transmission line by the least significant bit of the source address is input, and in each second header reading circuit (29) of the table circuit (25) of each stage, the source address of the read input packet is If it is in the current drop address table (26) of the table circuit (25) at that stage, it is sent to the corresponding ring transmission line as it is, and is not in the current drop address table (26), but the table circuit (25 at that stage) ) Is stored in the current drop address table (26), and then sent to the corresponding ring transmission line. If the header reading circuit (29) is not in the Nth stage, it is sent to the second header reading circuit (29) in the next stage, and the Nth stage If there is, the packet (33 or 34) is sent to the second header reading circuit (29) at the first stage, and the source address of the packet is arbitrarily written to the working drop address table (26) at the stage, In the first header reading circuit (28), if the destination address of the input packet is in the current drop address table (26) of the table circuit (25) at that stage, the packet is dropped. If the spare drop address table (27) of the table circuit (25) is searched and the packet is dropped, if there is not, the least significant bit 01 of the source address of the packet is transferred. It matches the transmission line 0 system or 1 system, and the source address of the packet is If there is a multi-round bit in the packet if it is in the drop address table (26), then search the spare drop address table (27) if there is not, and if there is no multi-round bit in the packet if it is not present If the stage is not the Nth stage, the packet is output as it is to the first header reading circuit of the next stage, and if it is the Nth stage, the packet is sent to the output transmission path. If there is no hit for a certain time in the search of the spare drop address table (27) from the first header reading circuit (28) of each stage, the spare drop address table (27) Clears the memory and performs the same operation as exchanging the current and spare names in the drop address tables of the current (26) and spare (27). To control such.

  Next, FIG. 14 shows a fourteenth embodiment of the node device according to the present invention. FIG. 14 shows a configuration in which there is no spare drop address table for each stage shown in FIG. 13, and only one of the N stage drop address tables is taken from the second header reading circuit to which the write permission for that stage is given. The current drop address table is writable, and the drop address table at the other stage performs a spare operation. FIG. 14 shows a two-stage configuration out of the N-stage configuration. The operation will be described below.

  A node device that uses a double ring network and has one ADD transmission line port. The two ring transmission lines are transmitted in parallel within the apparatus and have N-stage cascaded table circuits (36). The packet from the path port is added to the corresponding ring transmission path by the least significant bit of the source address of the packet, and the table circuit (36) at each stage has one drop address table (37) and the ring transmission path, respectively. Each first header reading circuit (38) and a second header reading circuit (39) for each packet stream to be ADD are arranged in parallel in the corresponding ring transmission path, and each ring transmission path in the first stage The first header reading circuit (38) receives the packet stream of each input ring, and the second header reading circuit (39) arranged for each first-stage ring transmission line. Is configured to input a packet distributed to each corresponding ring transmission line by the least significant bit of the source address of the packet from the ADD transmission line port to the node, and each second stage circuit (36) of each table circuit (36). In the header reading circuit (39) of this stage, if the second header reading circuit (39) at that stage does not have the write permission for the drop address table (37), the input packet is directly used for each ring transmission path of the next stage. If the source address of the read input packet is in the drop address table (37) of the table circuit (36) at that stage, if the permission is granted, , Send to the corresponding ring transmission line as it is, and if it is not in the drop address table (37), the source address is After writing in the drop address table (37), the packet is sent to the corresponding ring transmission line, and the first header reading circuit (38) of the table circuit (36) at each stage receives the destination of the input packet. If the address is in the drop address table (37) of the table circuit (36) at that stage, the packet is dropped. If not, the least significant bits 0 and 1 of the source address of the packet are transferred. If the packet matches the 0 system or 1 system of the transmission line and the source address of the packet is in the drop address table (37), a multi-round bit is added to the packet and then sent to the output transmission line. Is output to the first header reading circuit (38) of the next stage. If the dress table (37) does not hit for a certain period of time, the memory of the table is cleared.

  The first to fourteenth embodiments described above can be operated with cells or packets or packets with cell headers in the form shown below.

  For example, in a cell or packet with a MAC operation path operation or a packet with a cell header, a packet whose path MAC operation address is the MAC address of a MAC in MAC packet with a MAC header added in front of the IP over MAC packet, or A packet that is a global IP address that has a private IP address of an IP over MAC packet that uses a private IP address as an IP address in IP over MAC, or a packet that has a common MAC destination address of the IP over MAC A packet that is a MAC address of a cell or an address that operates as a path MAC is a cell that is two VPI addresses of a double cell header of an ATM cell having a double cell header Alternatively, a cell whose path MAC address is one VPI address of a double cell header of an ATM cell having a double cell header, or a cell header of an ATM cell whose path MAC address has another VPI before the cell header A cell whose path MAC address is a cell whose path MAC is the VPI address of a cell header of an ATM cell, or a cell whose path MAC address is a MAC address of a path ATM cell over MAC, Alternatively, a packet with a cell header whose path MAC address is two VPI addresses of a double cell header of a MAC packet having a double cell header, or a MAC cell double cell whose path MAC address has a double cell header Packet with cell header that is one VPI address of the packet header, or packet with cell header that is the two VPI addresses of the cell header of the MAC packet that has another VPI before the cell header. The MAC operating address is a packet with a cell header which is the VPI address of the cell header of a MAC packet having a cell header, or the MAC operating type 1-flow operating cell or packet or the packet with a cell header has an address for 1-flow MAC operating. The packet that is the MAC address of the IP over MAC packet, or the MAC destination address of the IP over MAC is a common address, and the MAC source address A packet that is a MAC of a packet that is one address, a packet that is an MAC address of an ARP packet, an address that operates 1 flow MAC, or a packet that an IP address of an IP over MAC packet is an address that operates 1 flow MAC, or 1 flow A packet whose MAC address is the IP address of an IP packet, a cell whose one-flow MAC address is an ATM cell over MAC MAC address, or an ATM cell whose one-flow MAC address is a double-cell header A cell characterized by two VPI + VCI or two VCI addresses of a double cell header, and an address for operating one flow MAC is one of the double cell headers of an ATM cell having a double cell header A cell characterized in that it is an address of PI + VCI or one VCI, or a cell in which an address that operates 1 flow MAC is a VCI address of a cell header of an ATM cell, or an address that operates in 1 flow MAC is an ATM cell over A cell that is a MAC address of a MAC, or a packet with a cell header that is a VPI + VCI or VCI address of a double-cell header of a MAC packet that has a double-cell header, or an address that operates a one-flow MAC has a cell header A packet with a cell header which is VPI + VCI or VCI address of a cell header of a MAC packet.

  The first to fourteenth embodiments described above show configurations without a packet flow transmission transmission line switching function. In the above embodiment, the method for selecting a ring transmission path to be transmitted by the least significant bit of the source address of the ADD packet is simple in configuration and can be expected to operate at high speed, but cannot be transmitted in a pair. Usage efficiency is poor, especially when looping back. Therefore, only one of the loopbacks at the time of a transmission path failure is performed, only the packet stream that is looped back is detected by the ADD node of the packet stream, and the transmission path is switched, and the opposite packet stream of the switched packet stream is also switched. Thereafter, the packet including the switching signal (reverse signal) for performing the other loopback from the source of the switching packet stream in which each loopback is eliminated toward the faulty node device, that is, the destination address of the normal transmission packet And send a packet back to the sending node with the source address changed. An embodiment of the node configuration to which the above operations are added will be described with reference to the examples of the improved diagrams of FIGS.

  FIG. 15 shows a fifteenth embodiment of the node device according to the present invention. FIG. 15 shows a flow switching operation by adding a flow switching function to FIG. In FIG. 15, reference numeral 39 denotes a packet header reading circuit corresponding to the ring transmission path after the packets from the ADD transmission path are sorted by the least significant bit of the source address, and reference numeral 40 denotes a transmission path switching address corresponding to the packet header reading circuit 39. It is a table. In the figure, IPBA end 00 is transmitted when the destination address of the IP packet operating in the MAC form is “B”, the source address is “A”, and the least significant bit of the source address used for ring transmission path selection is “end 0”. This indicates “0” indicating that the path switching bit is not switched. Further, “sw” at the end of IPBA 0 sw indicates that the transmission path switching bit is switched.

  The packet flow switching operation will be described below. In the normal state, the IPBA end 00 packet stream of (1) is transferred from the A node to the B node through the 0 system transmission path, while the IPAB end 10 packet stream of (1), which is the opposite packet flow, is transmitted through the 1 system transmission path. Has been transferred. A failure occurs in the transmission path between the A node and the B node, and only the 0-system transmission path in (2) loops back. Then, in the packet header reading circuit 38 of the 1-system transmission path of the A node, the packet whose source address is in the drop address table, that is, the least significant bit of the source address is different from the 1-system transmission path, that is, the loop The backed packet (2) IPBA end 00 is detected.

  The 1-system header reading circuit 38 records the switching of the destination ring transmission path of the packet of the source address A in the 0-system transmission path switching address table 40 that is the same as the least significant bit of the source address of the packet. To do. Here, (2) and sw are explanatory displays, and only “A” is actually recorded. In the header reading circuit 39 of the ADD transmission line corresponding to the 0-system ring transmission line, since the source address “A” is written in the transmission-line switching address table 40, the IPBA end 00 normally sent to the 0-system transmission line (3) The IPBA end 0 sw packet stream is sent to the system 1 transmission path with the transmission path switching bit set in the packet stream.

  Next, in the packet header reading circuit 38 of the 1st transmission line of the B node, a packet whose destination address is in the drop address table is different from that of the 1st transmission line in the input packet. A packet in which the transmission path switching bit is set, that is, a reception packet (4) IPBA end 0sw whose transmission path has been switched is detected. Since the header reading circuit 38 of the 1-system ring transmission line has a switching indication sw, the transmission destination of the packet of the source address B is stored in the transmission line switching address table 40 on the side opposite to the least significant bit of the source address of the packet. (4) Record Bsw indicating the switching of the ring transmission path.

  In the header reading circuit 39 of the ADD transmission line corresponding to the 1-system ring transmission line, since the source address “B” is written in the transmission-line switching address table 40, the IPAB end 10 that was normally sent to the 1-system transmission line (5) The IPAB end 1 sw packet stream is sent to the 0-system transmission line.

  Next, in the ring transmission path header reading circuit 38 of the node A that is the flow switching source of the packet flow IPBA, the least significant bit of the source address opposite to the ring transmission path system in the received packet packet flow IPAB paired with the IPBA (6) When the IPAB end 1sw is detected, it is determined that the switching of the transmission path of the IPBA opposite flow has been completed, and ADD transmission corresponding to the 0-system ring transmission path is performed. The destination address and source address of the packet obtained by copying the IPBA end 0 sw packet from the path header reading circuit 39 are exchanged, and the reverse-displayed packet (7) IPAB0sw, reverse indicating the loop back switching instruction is sent to the 1-system ring transmission path. This packet is a packet addressed to the own node, and is a packet that can go around the ring once. This packet is detected as (8) IP0sw, reverse at the transmission path failure end node of the 1-system transmission path, and a loopback (9) occurs. As a result, the (10) IPAB end 0sw, reverse packet with the reverse indication is received by the 0-system ring transmission path header reading circuit 38 of the A node. Therefore, it is assumed that the loopback has been completed. (7) IPAB0sw, reverse packet Stop sending.

  A sixteenth embodiment of the node device according to the present invention is shown in FIGS. 16 and 17 show the flow switching operation by adding the flow switching function to FIG. 16 is an A node corresponding to the operation of the A node in FIG. 15. FIG. 17 is a B node corresponding to the operation of the B node in FIG. 15, and a loopback occurs between both nodes. Assume that

  16 and 17, reference numeral 39 denotes a packet header reading circuit corresponding to the ring transmission path after the packet from the ADD transmission path is distributed by the distribution circuit 30 according to the least significant bit of the source address, and reference numeral 40 corresponds to the distribution circuit 39. This is a transmission path switching address table. In the figure, IPBA end 00 is transmitted when the destination address of the IP packet operating in the MAC form is “B”, the source address is “A”, and the least significant bit of the source address used for ring transmission path selection is “end 0”. This indicates “0” indicating that the path switching bit is not switched. Further, “sw” at the end of IPBA 0 sw indicates that the transmission path switching bit is switched.

  The packet flow switching operation will be described below. In the normal state, the IPBA end 00 packet stream of (1) is transferred from the A node to the B node through the 0 system transmission path, while the IPAB end 10 packet stream of (1), which is the opposite packet flow, is transmitted through the 1 system transmission path. Has been transferred. A failure occurs in the transmission path between the A node and the B node, and a loopback occurs in the 0-system transmission path. Then, in the packet header reading circuit 38 of the 1-system transmission path of the A node, the packet having the source address in the drop address table 37, which is different from the 1-system transmission path in the input packet, that is, Loopback packet (2) IPBA end 00 is detected.

  The 1-system header reading circuit 38 records the switching of the destination ring transmission path of the packet of the source address A in the 0-system transmission path switching address table 40 that is the same as the least significant bit of the source address of the packet. To do. Here, (2) Asw is a display for explanation, and only “A” is actually recorded. In the header reading circuit 39 of the ADD transmission line corresponding to the 0-system ring transmission line, since the source address “A” is written in the transmission-line switching address table 40, the IPBA end 00 normally sent to the 0-system transmission line (3) The IPBA end 0sw packet stream is sent to the system 1 transmission line via the switching path 42.

  Next, in the packet header reading circuit 38 of the 1st transmission line of the B node, the packet whose destination address is in the drop address table 37 is different from that of the 1st transmission line in the input packet. The packet with the transmission path switching bit set, that is, the received packet (4) IPBA end 0sw whose transmission path has been switched is detected.

  Since the header reading circuit 38 of the 1-system ring transmission line has a switching indication sw, the transmission destination of the packet of the source address B is stored in the transmission line switching address table 40 on the side opposite to the least significant bit of the source address of the packet. (4) Record Bsw indicating the switching of the ring transmission path.

  In the header reading circuit 39 of the ADD transmission line corresponding to the 1-system ring transmission line, since the source address “B” is written in the transmission-line switching address table 40, the IPAB end 10 that was normally sent to the 1-system transmission line (5) The IPAB end 1sw packet stream is sent to the 0-system transmission path via the switching path 41.

  Next, in the ring transmission path header reading circuit 38 of the node A that is the flow switching source of the packet flow IPBA, the lowest source address opposite to the ring transmission path system in the packet flow IPAB of the received packet paired with the IPBA If the packet having the bit and the transmission path switching bit is set (6) IPAB end 1sw is detected, it is determined that the transmission path switching of the IPBA opposite flow is completed, and the ADD corresponding to the 0-system ring transmission path is established. The destination address and source address of the packet obtained by copying the IPBA end 0 sw packet from the transmission path header reading circuit 39 are exchanged, and the reverse-displayed packet indicating the loop back switching instruction (7) IPAB 0 sw, reverse is switched via the switching path 42 Send to the ring transmission line.

  This packet is a packet addressed to the own node, and is a packet that can go around the ring once. This packet is detected as IP0sw, reverse at the transmission line failure end node of the 1-system transmission line, and a loopback occurs. As a result, the A node 0-system ring transmission path header reading circuit 38 receives the (8) IPAB end 0sw, reverse packet with the reverse indication, so that (7) the IPAB0sw, reverse packet Stop sending.

  Since multiple packets including a reverse signal for triggering one-side loopback are generated throughout the ring, a safer loopback can be achieved by looping back when a packet containing a certain number of reverse signals is detected at the failed end node. Can do.

  Next, a first embodiment of the one-stroke ring network of the present invention is shown in FIG. In this embodiment, the operation of an ARP packet in one double ring network is shown. Node A, node B, node C, and node D are connected on the ring, terminal H is connected to node A, terminal F is connected to node B, and terminal G is connected to node C. It is connected. In the following, an example in which terminal H performs packet transmission with terminal F via this ring network is shown.

  The terminal H transmits to the node A a packet represented by (1) ARP, MAC, all1, H0, IPF, H which are ARP and MAC packets. Here, MAC, all1, and H0 indicate that the MAC destination address is all 1, the MAC source address is the MAC address of the terminal H, and 0 in H0 indicates that the least significant bit of the MAC source address H is 0. IPF and H indicate that the IP destination address is the IP address of the partner terminal F and the IP source address is the IP address of the terminal H.

  When the packet (1) arrives at the node A, since the MAC source address H of the packet is not in the drop address table of the node A, after writing the source address (1) H in the table, the packet (2) ARP, MAC, all1, H0, IPF, H are sent to the 0-system ring transmission path indicated by the least significant bit of the MAC source address of the packet. Since the destination address of the packet is not on the ring, it is transferred on the ring as (3), (4), (5), and the packet is the source. The source address of the packet is dropped. Return to node A in the address table.

  Since it is found that there is no destination on the ring, the packet is made to make one round of the ring as a copy packet (6) ARP, MAC, all1, H0, IPF, H, copy with the copy bit added. The copy packet is copied to the subordinate transmission path at each node and then returns to the original node A, where it is discarded as (7) ARP, MAC, all1, H0, IPF, H, copy packet discard. Of the packets copied at each node, only the terminal F under the node B matches the IP destination address of the copy packet, so the terminal F is a response packet of the ARP packet. (8) ARP Response, MAC, H, F1, IPH, F are sent to Node B. When the packet arrives at the node B, the MAC source address F of the packet is not in the drop address table of the node B. Therefore, after writing the source address (8) F into the table, the MAC source address of the packet (9) ARP response, MAC, H, F1, IPH, F, are sent to the 1-system ring transmission line indicated by the least significant bit. The packet is dropped at the node A whose MAC destination address is in the drop address table, and reaches the terminal H as (10) ARP response, MAC, H, F1, IPH, F. Thereafter, packet transfer between the two terminals H and F is performed by the destination address of the drop address table left in the node A and the node B.

  In this example, a broadcast packet whose MAC destination address is all 1 such as ARP is handled in the same way as an unknown packet, but a broadcast packet can also be handled as a copy packet from the beginning.

  Next, a second embodiment of the one-stroke ring network of the present invention is shown in FIG. This embodiment shows the operation of an unknown packet instead of the ARP packet of FIG. The operations from (1) to (9) in FIG. 19 show the operation. The operation is the same as the example of the ARP packet in FIG. In the present invention, a packet without a destination in an ADD node is not immediately flooded as an unknown packet, as in the conventional switch, but is not a flooded packet for the first time when there is no destination even after one round of the ring. This is different in that it is determined, converted into a copy packet, and copied to a subordinate transmission path at each node. Incidentally, the copy packet bit of the unknown packet can be shared with the ARP packet by using the seventh bit from the head, which is a bit that is not used in the existing MAC destination address. The copy bit may be used with the seventh bit from the beginning of the MAC source address set to 1.

  Next, a third embodiment of the one-stroke ring network of the present invention is shown in FIG. In this embodiment, in one double ring network, only the source MAC address of the device is obtained from the router or the corporate LAN device, and the MAC source address raises an all-zero single-route setup packet to the ring edge, and the node In the normal state where the source address of the packet is left in the drop address table, an example of accessing the company or router from the partner terminal, partner router or partner company is shown.

  In FIG. 20, the company F sends a one-path setting packet MAC ○ F (○ indicates that the MAC destination address is all 0) to the node C, and the MAC source address F is stored in the drop address table of the node C. Shows the case of leaving. In this state, when the terminal H connected to the node A sends a packet (1) MACFH0 addressed to the company F to the node A, the source address of the packet is not written in the drop address table of the node A. The address is written in the table, sent to the 0-system ring transmission line as (2) MACFH0, reaches the node C, drops at the node C, and the packet is sent to the MAC destination in the company F. The destination address is converted into an all-zero copy packet, reaches the partner terminal according to the partner IP destination address (not shown in FIG. 20), and the response packet is a route set by the source MAC address of the terminal H To reach the terminal H, and thereafter, packet transfer is performed between the two terminals.

  The first to third embodiments of the one-stroke ring network of the present invention described above correspond to claims 1 and 2.

  Next, FIG. 21 shows a fourth embodiment of the one-stroke ring network of the present invention. This embodiment corresponds to claim 4. This embodiment is an example of a one-stroke multi-stage ring tree network in which a small number of double ring networks are connected in a tree shape. In this network, an example is shown in which packets are transferred between the head office and the branch office of company A using the MAC path set in this network. Between each ring, a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are joined together and then connected via the transmission path set between the rings. To the ring transmission line designated by the least significant bit of the source address or destination address.

  In this embodiment, the head office source address MACB and the branch office source address MACC are written to both the 0-system ring and the 1-system ring in the drop address table at the point of going up to the upper ring or lower ring of each ring. ing. Using this table, MACBC and MACCB are transferred to each other as shown. 0 and 1 attached to the MAC indicate that the least significant bit of the source address is 0 or 1.

  Next, FIG. 22 shows a fifth embodiment of the one-stroke ring network of the present invention. FIG. 22 shows an example in which a conventional MAC header is used as a destination address and a source address of a packet that operates in the MAC mode. FIG. 22 shows an example of a one-stroke multi-stage ring tree network for a small-scale network. In FIG. 22, reference numeral 50 is the lowest MAC ring, reference numeral 51 is the highest MAC ring, reference numeral 52 is the terminal, reference numeral 53 is the MAC ring, and reference numeral 100 is a connection node with the upper ring.

  Since the node device described in FIGS. 1 to 17 is used in each ring node in FIG. 22, the source address of the packet is left in the node only when the packet goes up to the ring, and the source address when the packet leaves the ring. Rely on. Also, in this network, packets that have dropped from the upper ring are only discarded if there is no destination on that ring, and cannot go down to the lower ring. Therefore, this network has only an interface connected from the lower ring, and no interface connected from the upper ring. Since this network has a tree structure in principle, there is no connection between the MAC rings 50 or the MAC rings 53. However, the terminal may be directly connected to the MAC ring 53. The operation will be described below.

  FIG. 22 shows a packet that goes up the ring in a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape. A packet that is sent to the ring transmission path indicated by the table in which the ring transmission path indicated by the bit at the specific position of the ring transmission path or the source address of the packet or the ADD destination ring transmission path for each source address is written, is transferred from the ring. DROP is performed only when the address of the drop address table in which only the drop address is written in correspondence with the outgoing port matches the destination address of the packet, otherwise it is passed, and when a transmission path failure or node failure occurs, a failure occurs. Transmission line at nodes on both sides of the location In a double ring network consisting of a 0 system and a 1 system that steers and steers the transmission path at nodes on both sides of the back-up or failure location, a packet that is ADDed to the ring is indicated by the ADD destination ring transmission path identification bit of the packet The source address of the packet is stored in the drop address table corresponding to the ring transmission path indicated by the table in which the ring transmission path indicated by the bit at the specific position of the ring transmission path or the source address of the packet or the ADD destination ring transmission path for each source address is written. If there is not, after writing the source address to the table, if there is the source address of the packet, it is sent to the ring output of the node as it is and circulates on the ring, and the packet that circulates on the ring is input to the node If this happens, the drawer corresponding to the input ring If there is a destination address of the packet in the group address table, DROP at that node, otherwise pass through as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit granting node If it is determined by the first input node (100) of the two nodes connected to the upper ring that there is no destination even if it makes a round on the ring, the node goes up to the upper ring, and the highest ring 51 If there is no destination even after one round on the ring, it is converted into a copy packet, and it is circulated on each of the lowermost rings 53 and 50 other than the uppermost ring 51 and the uppermost ring and copied at each node. DROP and tell all terminals, and the destination address of the packet matches the MAC address of the terminal A node that establishes a reverse path with a response packet from the terminal and connects the upper and lower rings is all packets that are input to that node when the inter-ring connection transmission path of that node fails or when the node at the destination of the transmission path fails. Is a through-ring double ring network.

  Note that copy packets that make one round of each ring are discarded. The reason why the upper and lower rings are double-connected is that failure in the transmission path between the upper and lower rings cannot be recovered by loopback. One of the upper ring connection nodes raises to the upper ring and leaves the source address at the entrance of the upper ring, thereby allowing the reverse packet to pass and recovering from the failure.

  Next, the inter-terminal path setting operation of this network will be described using the numbers (1) to (5) shown in FIG. (1) MACBA indicates that the MAC destination address is B and the MAC source address is A. The packet (1) MACBA sent from the terminal A leaves its source address (1) A at the entrance node of each ring, goes up to the upper ring when there is no destination in the ring, and the destination is also in the highest ring 51 If not, copy packet (2) is converted to copy MACBA and distributed to all terminals. Response packet (3) MACAB from terminal B has its source address (4) B at the entrance node of each ring on the reverse path Leave it to terminal A.

  Next, a sixth embodiment of the one-stroke ring network of the present invention is shown in FIG. This embodiment is an example of a single-stroke multi-stage ring tree network for small-scale networks that transfer paths or one-flow MAC packets. This network shows a procedure in which a terminal connects to an edge node in a state where a single path is set by a single path setting packet from the edge node to the highest ring edge. In FIG. 23, the edge node accommodated in the lowermost ring on the right side has a MAC address MACSB (S of SB indicates a source address and B is the source address), and (1) 'MAC ○ B0 (single path setup packet) (◯ indicates that the MAC destination address is all 0) is sent, and the source address B is left in the drop address table at the entrance of the lowest ring. This source address is set in two drop address tables corresponding to the 0-system ring and the 1-system ring.

  Since the least significant bit of the MAC source address of this packet is 0, it goes up to the 0-system ring and there is no destination even if it makes one round on the ring. A multi-round bit is added at a node that goes up the ring. The packet with (3) 'MAC B0 multi-round bit is judged to be a node that goes up to the upper ring and has a multi-round bit. Drop later and go up to the upper ring. The upper ring operates in the same manner as the lowermost ring, and as shown in FIG. 23, at the egress node that goes up to the highest ring, (6) the multi-round bits of 'MAC B0 are removed and dropped, (7) As shown in 'MAC * B0', the packet goes up to the uppermost ring, and after writing the source address in the drop address table at the entrance of the ring, the packet is discarded.

  On the other hand, the terminal MACSC having the MAC source address C sends (1) the MACBC0 call packet addressed to the edge node B to the lowest ring, leaves the source address in the drop address table of the ring, and the source of the packet It goes up to the 0-system ring indicated by the least significant bit of the address. Also in this case, since the destination of this packet is not on the ring, a round-trip bit is given to the node that makes one round and returns to the original ADD node, and the packet drops at the node that goes up to the upper ring, Go up to the ring. These operations are described in (1) to (10) in the figure and operate in the same manner as the packet from the edge node described above. In (10), since it is connected to the path set by the one-path setting packet from the edge node described above, after that, it reaches the edge node by the path, and the service of the edge node or further After being connected to a terminal under the edge node, packet transfer is performed thereafter.

  Next, FIG. 24 shows a seventh embodiment of the one-stroke ring network of the present invention. In this embodiment, in the figure, the (5) MACBC0 multi-round bits are removed and dropped in the drop address table of the egress node rising from the lowermost ring on the left to the upper ring. Except that the destination address of the packet is left in the drop address table so that the next packet can be forwarded to the upper ring without being a multi-round packet. Since it is the same as that of the sixth embodiment, the description is omitted. The multi-round bits may be removed after the source address is written in the drop address table at the upper ring entrance.

  The fifth to seventh embodiments of the one-stroke ring network of the present invention correspond to claims 5 and 6.

  Next, FIG. 25 shows an eighth embodiment of the one-stroke ring network of the present invention. This embodiment corresponds to the eleventh aspect. This embodiment is an example of a one-stroke multi-stage ring tree network of a small-scale network, and uses a conventional IP header as a destination address and a source address of a packet that operates in a MAC type, and has no destination even in the highest ring. Is an example of connection to an existing IP network (Internet network).

  In FIG. 25, reference numeral 54 is the lowest IPC ring, reference numeral 56 is the highest IP ring, reference numeral 57 is the existing IP network, reference numeral 52 is the terminal, reference numeral 55 is the IP ring, reference numeral 100 is the connection node with the upper ring, reference numeral 59 Is an Internet connection port provided in the lowest ring. A packet sent from the highest ring 56 to the existing IP network 57 is encapsulated with an IP header having the destination address of the packet as the destination address and the source address as the address of the Internet connection port 59 at the entrance device. .

  The packet is sent to the existing terminal or the existing ONT via the existing IP network. If the existing terminal or the existing ONT is connected to the one-stroke network, the encapsulated IP header is deleted and a response packet is sent to the one-stroke network. On the other hand, in the case of an existing terminal or an existing ONT not connected to the one-stroke network, a response packet is sent to the Internet connection port 59 via the existing IP network. Thereafter, the packet is transmitted and received with the one-stroke network through the Internet connection port 59.

  The operation of FIG. 25 will be described below. FIG. 25 shows a packet that goes up the ring in a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape. A packet that is sent to the ring transmission path indicated by the table in which the ring transmission path indicated by the bit at the specific position of the ring transmission path or the source address of the packet or the ADD destination ring transmission path for each source address is written, is transferred from the ring DROP is performed only when the address of the drop address table in which only the drop address is written in correspondence with the outgoing port matches the destination address of the packet, otherwise it is passed, and when a transmission path failure or node failure occurs, a failure occurs. Transmission line at nodes on both sides of the location In a double ring network consisting of a 0 system and a 1 system that steers and steers the transmission path at nodes on both sides of the back-up or failure location, a packet that is ADDed to the ring is indicated by the ADD destination ring transmission path identification bit of the packet The source address of the packet is stored in the drop address table corresponding to the ring transmission path indicated by the table in which the ring transmission path indicated by the bit at the specific position of the ring transmission path or the source address of the packet or the ADD destination ring transmission path for each source address is written. If there is not, after writing the source address to the table, if there is the source address of the packet, it is sent to the ring output of the node as it is and circulates on the ring, and the packet that circulates on the ring is input to the node If this happens, the drawer corresponding to the input ring If there is a destination address of the packet in the group address table, DROP is performed at the node, and if there is not, the packet is passed as it is. If the node (100) connected to the upper ring determines that there is no destination even if it goes around on the ring, it goes up to the upper ring at that node and goes around on the ring in the uppermost ring (56). However, if there is no destination, the packet added with an IP header having the destination address of the packet as the destination address and the source address as the existing network connection port address of the lowest ring is added to the packet. 57), characterized in that it is transmitted to 57) This is a double ring network.

  Next, the inter-terminal path setting operation of this network will be described using the numbers (1) to (10) shown in the figure. (1) MACDAIPBA indicates that the MAC destination address is D, the MAC source address is A, the IP destination address is B, and the IP source address is A. The packet (1) MACDAIPBA sent from the terminal A leaves the IP source address (2) A at the entrance node of each ring and goes up to the upper ring when there is no destination in the ring. If there is no IP address, (3) the IPBA is sent to the existing IP network 57, the destination address B of the packet is newly set as the destination address in the packet header at the entrance, and the source address of the lowest IP ring 54 Packets with a header added as E, which is the IP address of the Internet connection, are converted into (4) IPBEBA.

  The response packet (5) IPEBAB from the receiving terminal in the existing IP network reaches the Internet connection port 59, where the packet (6) IPAB from which the outer header is removed enters the one-stroke network. The packet reaches the terminal A leaving the source address (7) B at the entrance node of each ring, and the source packet (10) A is left at each entrance node of the ring by the response packet from the terminal A ((2) If there is A, the source address (7) B at the ring exit is traced to reach the Internet connection port 59, where the IPBA further uses the destination address B as the destination address, and the source address is the Internet connection. A packet (10) with a header as the source address E of the port 59 is converted into IPBEBA and sent to the existing IP network 57. Thereafter, the terminal A and the terminal B in the existing IP network communicate with each other via the Internet connection port 59.

  Next, FIG. 26 shows a ninth embodiment of the one-stroke ring network of the present invention. In this embodiment, a mesh network connection ring is provided on each of a plurality of small-scale network single-stroke multi-stage ring tree networks, and a transmission path is formed in a mesh shape between the rings to connect lower tree networks. As an example of a large-scale network that can be performed, a network such as that shown in the sixth embodiment is used as an example of the lower multistage ring tree network of 1 to 5. In this embodiment, the edge node accommodated under the multi-stage ring tree network sends a one-path setting packet to the upper mesh network ring, goes up, is converted into a copy packet, and passes through the mesh network. In this example, one path is always set up to each mesh network ring entrance. The operation of this embodiment will be described below.

  The edge node MACSB sends out (1) 'MAC B0 (one-path setting packet), and the packet is connected to the mesh network as (2)' MAC B0 via the multistage ring tree network 5. Leave MAC source address B in the drop address table at the ring edge at the entrance of the ring, go up to the mesh network ring, convert it into a copy packet, and copy it as a packet of (3) 'MAC B0 copy bit at each node , (4) ′ MAC ○ B0 copy bit + multi-turn bit packet is converted and sent to the mesh network transmission path.

  This packet is discarded with the source address B left as a packet of (5) ′ MAC B0 copy bit + multi-turn bit in the drop address table at the entrance of each receiving side mesh network ring. A copy bit and a multi-turn bit are added to this packet because a normal copy packet goes around the ring and is discarded when it returns to the ADD node, whereas this packet does not go around the ring. Since it is necessary to discard at the entrance of the ring, it is necessary to attach two bits. The reason why this packet needs to be discarded at the entrance of the ring is to prevent a loop from occurring in the packet flow in the mesh network.

  On the other hand, the terminal MACSC (1) sends out a MACBC0 call packet, and the packet is sent to the drop address table at the edge of the mesh network ring as a (2) MACBC0 call packet via the multistage ring tree network 1. The source address C is left and it goes up to the 0 system ring. The packet has (3) a drop address table in which the destination address B of the packet is set as the MACBC0 call packet, and the source address B indicating the single path set by the single path setting packet from the edge node is set. Drop at node. The packet arrives at the receiving edge node via (4) and (5) via the mesh network as (6), and is a reverse path to the terminal MACSC with the response packet of the packet. Is set. Note that the packet (6) may be copied and distributed to the terminals under the edge node, and a reverse path may be set up to the terminal MACSC with the response packet to transfer the packet between the terminals.

  Next, FIG. 27 shows a tenth embodiment of the one-stroke ring network of the present invention. FIG. 27 shows a destination address of a packet operating in the MAC form, a conventional MAC header is used for the lowest ring as a source address, a conventional IP header is used for the other rings, and a packet having no destination in the highest ring is further higher. This is an example of a one-stroke large-scale independent network in which a mesh network is connected to a small-scale network in another region by a mesh network. In FIG. 27, reference numeral 60 is the lowest MAC ring, reference numeral 62 is the highest IP ring, reference numeral 63 is a mesh network ring connected to the mesh network, reference numeral 64 is a MAC / IP converter for connecting the IP ring and the MAC ring, reference numeral Reference numeral 100 denotes a connection node with the upper ring, reference numeral 52 denotes a terminal, and reference numeral 61 denotes an IP ring.

  FIG. 28 shows the configuration of the MAC / IP conversion device 64. In the MAC / IP converter 64, reference numeral 65 denotes a MAC-IP conversion table, reference numeral 66 denotes a MAC packet configuration received by the MAC / IP converter from the terminal, and reference numeral 67 denotes IP sent from the MAC / IP converter to the IP network. A packet configuration, reference numeral 68 denotes a MAC packet from the IP network, an IP packet configuration received by the IP converter, and reference numeral 69 denotes a MAC packet configuration sent from the MAC, IP converter to the terminal.

  In FIG. 28, the MAC header is simply deleted in the conversion from the MAC network to the IP network, but the MAC-IP in which the destination address of the IP header and the MAC address of the receiving terminal are recorded in the conversion from the IP network to the MAC network. A conversion table 65 is used.

  Next, the operation of FIG. 27 will be described. FIG. 27 shows a packet that goes up the ring in a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape. A packet that is sent to the ring transmission path indicated by the table in which the ring transmission path indicated by the bit at the specific position of the ring transmission path or the source address of the packet or the ADD destination ring transmission path for each source address is written, is transferred from the ring. DROP is performed only when the address of the drop address table in which only the drop address is written in correspondence with the outgoing port matches the destination address of the packet, otherwise it is passed, and when a transmission path failure or node failure occurs, a failure occurs. Transmission line at nodes on both sides of the location This is a double ring network consisting of a 0 system and a 1 system that is looped back and steered at nodes on both sides of the loopback or fault location, and is a mesh network ring (IP ring 63) immediately above the uppermost ring (IP ring 62). ) Is connected to the mesh network. In one double ring network, a packet to be ADDed to the ring is a bit at a specific position of the ring transmission path indicated by the ADD destination ring transmission path identification bit of the packet or the source address of the packet. If there is no source address of the packet in the drop address table corresponding to the ring transmission path indicated by the table in which the ring transmission path indicated by or the ADD destination ring transmission path for each source address is written, the source address is written to the table, and If there is a source address for the packet, the node When it is sent to the ring output and circulates on the ring, and a packet that circulates on the ring is input to the node, if the destination address of the packet is in the drop address table corresponding to the input ring, the node DROP, pass if there is not, and set the multi-round bit in the multi-round bit area of the packet to be transferred by the ADD node or multi-round bit grant node to indicate that there is no destination even if it makes one round on the ring If it is determined by the node to be connected (connection node 100), it rises to the upper ring at that node, and if there is no destination even after making a round on the ring in the highest ring (IP ring 62), the highest ring Go up to the mesh network ring (IP ring 63) above the (IP ring 62) and mesh mesh ring (IP If there is a destination by going around the ring 63), DROP is performed. If there is no destination even after going round, the packet is converted into a copy packet and circulated. The packet copied at each node is a packet having a copy and a multi-round bit. The packet is converted and sent to the mesh network. After the source address of the packet is written in the drop address table at the mesh network ring ADD node on the receiving side, the ring goes around and is not copied at the mesh network connection node. The packet is copied at the network connection node, and the packet with the copy bit and the multi-turn bit that has made one round is discarded, and the copy packet that makes a round around the source mesh network ring (IP ring 63) In the upper ring, which is also copied to the (IP ring 62) and discarded, the MAC operation type path operation is performed. In the ring is a double ring network that operates MAC operating-shaped line.

  The ninth and tenth embodiments of the one-stroke ring network of the present invention described above correspond to claims 12, 13, 16, and 17.

  An eleventh embodiment of the one-stroke ring network of the present invention is shown in FIG. This embodiment corresponds to the fourteenth aspect. FIG. 29 shows the destination address and source address of a packet that operates in the MAC form. The lowermost ring uses the conventional MAC header, the other rings use the conventional IP header, and the packet with no destination in the highest ring further If it goes up to the upper mesh network ring and there is no destination in that mesh network ring, it is converted into a copy packet and connected to the existing IP network, and at the mesh network ring exit of a small network in another area, This is an example of a one-stroke large-scale network in which a single route is set via a mesh network and a reverse route is set by a response from a terminal connected from the existing IP network.

  29, reference numeral 60 is a MAC ring, reference numeral 61 is a lowest IPC ring, reference numeral 62 is a highest IP ring, reference numeral 70 is a mesh network ring, reference numeral 57 is an existing IP network, reference numeral 52 is a terminal, reference numeral 64 is a MAC, The IP conversion apparatus, reference numeral 100 is a connection node with the upper ring, and reference numeral 59 is an Internet connection port provided in the lowest ring.

  A packet sent from the mesh network ring 70 to the existing IP network 57 is encapsulated by an IP header with the destination address of the packet as the destination address and the source address as the address of the Internet connection port 59 at the entrance device. . The packet is sent to the existing terminal or the existing ONT via the existing IP network. If the existing terminal or the existing ONT is connected to the one-stroke network, the encapsulated IP header is deleted and a response packet is sent to the one-stroke network.

  On the other hand, in the case of an existing terminal or an existing ONT not connected to the one-stroke network, a response packet is sent to the Internet connection port 59 via the existing IP network. Thereafter, the packet is transmitted and received with the one-stroke network through the Internet connection port 59. There is only one Internet connection port 59 in this large-scale network, and all terminals of the large-scale network can be connected to the Internet network through this Internet connection port 59. The operation of FIG. 29 will be described below.

  FIG. 29 shows a packet that goes up the ring in a multi-stage ring tree network in which ring networks that transfer packets having a source address and a destination address are connected in a tree shape. A packet that is sent to the ring transmission path indicated by the table in which the ring transmission path indicated by the bit at the specific position of the ring transmission path or the source address of the packet or the ADD destination ring transmission path for each source address is written, is transferred from the ring. DROP is performed only when the address of the drop address table in which only the drop address is written in correspondence with the outgoing port matches the destination address of the packet, otherwise it is passed, and when a transmission path failure or node failure occurs, a failure occurs. Transmission line at nodes on both sides of the location This is a double ring network consisting of a 0 system and a 1 system that is looped back and steered at nodes on both sides of a loopback or fault location, and is a mesh network ring (IP ring 70) immediately above the uppermost ring (IP ring 62). ) Is connected to the mesh network. In one double ring network, a packet to be ADDed to the ring is a bit at a specific position of the ring transmission path indicated by the ADD destination ring transmission path identification bit of the packet or the source address of the packet. If there is no source address of the packet in the drop address table corresponding to the ring transmission path indicated by the table in which the ring transmission path indicated by or the ADD destination ring transmission path for each source address is written, the source address is written to the table, and If there is a source address of the packet, the node When it is sent to the ring output and circulates on the ring, and a packet that circulates on the ring is input to the node, if the destination address of the packet is in the drop address table corresponding to the input ring, the node DROP, pass if there is not, and set the multi-round bit in the multi-round bit area of the packet to be transferred by the ADD node or multi-round bit grant node to indicate that there is no destination even if it makes one round on the ring If it is determined by the node to be connected (connection node 100), it rises to the upper ring at that node, and if there is no destination even after making a round on the ring in the highest ring (IP ring 62), the highest ring Go up to the mesh net ring (IP ring 70) above and go around the mesh net ring (IP ring 70) If there is a destination, DROP is performed. If there is no destination even after one round, the packet is converted to a copy packet and circulated, and the copy packet is also sent to the existing Internet network (IP existing network 57) and copied at each node. The packet is sent to the mesh network, the copy bit of the copy packet is viewed at the ring ADD node for the mesh network on the receiving side, the source address of the packet is written in the source address table, and then discarded. A copy packet that makes a round of the network ring (IP ring 70) is a double ring network that operates on a MAC operation type circuit, and is discarded.

  In FIG. 29, a reverse path to the downstream path set up to the mesh network ring exit by the calling terminal is set by a response from the terminal connected from the existing IP network.

  Next, the inter-terminal path setting operation of this network will be described using the numbers (1) to (15) shown in the figure. (1) MACDAIPBA indicates that the MAC destination address is D, the MAC source address is A, the IP destination address is B, and the IP source address is A. The packet (1) MACDAIPBA sent from the terminal A leaves the source address MACA at the entry node of the MAC ring 60, leaves its IP source address (3) IPA at the entry node of each IP ring, and has a destination on the ring. If there is no destination, even if there is no destination in the mesh network ring 70 ring on the right side, copy packet (4) is converted to copy IPBA, circulates on the ring, is copied at each node, and the existing IP Also send to the net. The packet sent to the mesh network is discarded after leaving the source address (5) IPA of the entry node of the mesh network ring in the other area of the mesh network.

  On the other hand, the packet (5) IPBA sent to the existing IP network newly uses the destination address B of the packet as the destination address in its packet header, and uses the source address as the Internet connection port 59 of the lowest IP ring 61. Packet (6) to which IPBE, which is the IP address of the IP address, is added, and is converted to IPBEBA. The response packet (7) IPEBAB from the receiving terminal B in the existing IP network reaches the Internet connection port 59, and the packet (8) IPAB from which the outer header is removed enters the one-stroke network. The packet leaves the source address (9) IPB at the entrance node of each ring, reaches the left mesh network ring 70, and follows the (5) IPA at the exit of the ring to the right mesh network ring 70. After that, follow the source address (3) IPA and (2) MACA at the ring exit to reach terminal A, and leave the source address (14) IPA at each ring entry node with a response packet from terminal A ((3) If there is A, follow the source address of the ring exit (9) Follow the IPB to reach the Internet connection port 59, where the destination address B is made the destination address to the IPBA, and the source address Packet with a header with the source address E of the Internet connection port 59 converted to IPBEBA (15) Send to the network 57. Thereafter, the terminal A and the terminal B in the existing IP network communicate with each other via the Internet connection port 59.

  A twelfth embodiment of the one-stroke ring network of the present invention is shown in FIG. In FIG. 30, reference numeral 60 is the lowest MAC ring, reference numeral 62 is the highest MAC ring, reference numeral 63 is a mesh network ring connected to the mesh network, reference numeral 100 is a connection node with the upper ring, reference numeral 52 is a terminal, reference numeral 80 Is a MAC ring, and 81 is an edge node.

  FIG. 30 corresponds to claims 33 to 35 and is an example of a one-stroke large-scale independent network.

  The feature of this network is that all the lower MAC rings 80 have edge nodes 81, and the edge nodes 81 periodically raise one-path setting packets including their source addresses to the mesh network ring 63, The packet is converted to a copy packet in the ring 63 and circulated, and the packet copied at each node is sent to the mesh network and distributed to other areas, and the copy bit of the copy packet is viewed at the ADD node of the ring for the mesh network on the receiving side. An operation of discarding the packet after writing the source address of the packet in the drop address table is performed, and the copy packet that goes around the transmission source mesh network ring is discarded.

  Further, the feature of this network is that, using the edge node 81, the edge node has a function of periodically sending a single path setting packet including its source address to the highest ring, and the terminal 52 is connected. For each source address of the destination terminal, a header having the source address of the edge node included in the destination terminal, the source address of the source terminal as the source address, and the source address of the edge node included in the destination terminal as the destination address The edge node 81 that has received the packet includes the source address of the connection destination terminal included in the option area instead of the destination address of the packet. Copy packet with destination address as Converted to bets, distribute to all terminals under, is to have a terminal connecting method of the destination address of the copy packet sets a reverse path response from the receiving terminal is the source address of the terminal.

  In addition, the feature of this network is that the edge node 81 has a function of periodically sending a route setting packet including the source address up to the highest ring by using the edge node 81. For each source address of the terminal, there is a header having the source address of the edge node included in the destination terminal, the source address of the source terminal as the source address, and the source address of the edge node included in the destination terminal as the destination address. The edge node that received the packet including the source address of the connected terminal in the option area and received the packet uses the source address as the source address of the edge node, and includes the destination address in the option area of the received packet. Header as the source address of the connected terminal When a response packet is received from a receiving terminal whose destination address is the source address of the terminal, the received packet receives the destination address of the packet. A terminal-to-terminal connection method for sending a packet converted to the source address of the calling terminal to the calling terminal and setting a reverse path.

  In addition, the feature of this network is that the edge node 81 has a function of periodically sending a route setting packet including the source address up to the highest ring by using the edge node 81. For each source address of the terminal, there is a header having the source address of the edge node included in the destination terminal, the source address of the source terminal as the source address, and the source address of the edge node included in the destination terminal as the destination address. The edge node that sends the packet that contains the source address of the destination terminal in the option area and the mail data in the payload, receives the packet, uses the source address as the source address of the edge node, and the destination address as the destination address. Connection destination included in the option area of the received packet A packet that does not contain mail data with a header as the last source address is converted into a copy packet, distributed to all subordinate terminals, and a response packet from the receiving terminal whose destination address is the source address of the terminal And a terminal-to-terminal mail transfer method that, when received, converts a destination address of a packet including mail data received from the calling terminal into a source address of a packet received from the receiving terminal, and sends the packet to the receiving terminal.

  In the inter-terminal connection method or the inter-terminal mail transfer method, the source address of the edge node included in the destination terminal for each source address of the terminal or the connection destination terminal is the fixed telephone owned by the owner of the destination terminal. An address specific to the edge node may be added to the area number of the number.

  Since the operation of this network is the same as that described in the above embodiment, the description thereof is omitted.

  Next, FIG. 31 shows a thirteenth embodiment of the one-stroke ring network of the present invention. This embodiment corresponds to the seventh aspect. In this embodiment, a packet having a source address and a destination address is placed under each ring of a mesh ring network in which a large number of ring networks that transfer packets having a source address and a destination address are connected in a plane. This is a complex network in which the ring networks to be transferred are connected in a tree shape and the highest ring of the multistage ring tree network is connected. As an example of the lower 1 to 5 multistage ring tree network, the network shown in the sixth embodiment is used. In this embodiment, an edge node accommodated under a multi-stage ring tree network sends a single path setup packet to the ring edge of the upper planar mesh ring network, and the single path is always set. is there. The operation of this embodiment will be described below.

  The edge node MACSB periodically sends out (1) 'MAC B0 (one-path setting packet), and the packet passes through the multi-stage ring tree network 5 and (2) as' MAC B0 The packet is discarded leaving the MAC source address B in the drop address table at the ring edge of the planar mesh ring network.

  On the other hand, the terminal MACSC (1) sends out a MACBC0 call packet, and the packet passes through the multistage ring tree network 1 and (2) as a MACBC0 call packet, the drop address at the ring edge of the planar mesh ring network The MAC source address C is left in the table, and it goes up to the 0-system ring. If there is no destination even after one round, it is converted into a copy packet and copied to the adjacent ring. Each ring of the planar mesh ring network has four connection transmission lines between adjacent rings and is connected to each of the four adjacent rings.

  In FIG. 31, the copy packet is copied to two adjacent rings. At this time, (4) the copy bit of the copy packet of MACBC0 is deleted at the ring exit and goes up to the adjacent ring. At that time, the source address C is left in the drop address table at the entrance of the ring, and it goes up to the ring. If there is no destination on each ring, the copy packet that goes up to two adjacent rings is converted into a copy packet and copied to the adjacent ring. However, copying of the copy packet to the adjacent ring is performed only for a node that does not have the source address of the packet in the drop address table of the exit. Therefore, the copy packet will not be reversed. However, in this network, a plurality of temporary routes are set for the call packet.

  The above operation is performed on each ring of the planar mesh ring network. Finally, in the node of the drop address table having the source address B set by the one-path setting packet from the edge node, (7) MACBC0 is Dropped and connected to one route already set. The packet arrives at the edge node as (8), selects one route from a plurality of routes in the planar mesh network with the response packet, sets a reverse route, and reaches the originating terminal MACSC. When there are a plurality of exits in one ring in the planar mesh network, it is necessary to select the exit of the shortest path among them.

  Next, FIG. 32 shows a fourteenth embodiment of the one-stroke ring network of the present invention. This embodiment corresponds to claims 8, 9, and 10. In this embodiment, a packet having a source address and a destination address is transferred under each of a plurality of rings in a ring network in which many ring networks for transferring packets having a source address and a destination address are connected in a skewered manner. This is a composite network in which the highest rings of the multi-stage ring tree networks N1 to N3 are connected in a tree shape.

  As an example of the lower 1 to 3 multistage ring tree network, the network shown in the sixth embodiment is used. In this embodiment, an edge node accommodated under a multistage ring tree network sends a single path setting packet to a ring network connected in a skewered manner via the multistage ring tree network. Is an example that is always set. The operation of this embodiment will be described below.

  The edge node MACSB (1) sets the single path setting packet of 'MAC * B0 to the edge of the ring network in which multiple packets are connected in a skewered manner via the multi-stage ring tree network N3 (2)' MAC * B0 single path setting The packet is discarded and the MAC source address B is left in the drop address table at the edge, and the packet is discarded.

  On the other hand, the terminal MACSC (1) raises the MACBC0 call packet to the edge of the ring network in which many MACBc0 call packets are connected via the multi-stage ring tree network N1 in a skewered manner. Leave the MAC source address C in the drop address table, go up to the 0-system ring, and if there is no destination even after one round, convert it to a multi-round packet and move to the adjacent ring. (4) MACBC0 Remove multi-round bits, drop and move to adjacent ring. The drop address table of the node that goes up to the adjacent ring leaves the MAC source address C and goes up to the 0-system ring. Similarly, the destination address B of the packet is set in the drop address table. In (6), the MACBC0 packet is dropped, and the edge node is reached according to the set one path. Upon reception of the packet (7) MACBC0, a response packet is returned and a reverse path in the skewered multiple ring network is set.

  The above is the operation of this network. The operation of this network will be further described below. In this network, when a transmission line failure or a node failure occurs, a double ring consisting of a 0 system and a 1 system is configured such that the transmission line loops back at the nodes on both sides of the failure point or the transmission line loops back at the nodes on both sides of the failure node. An edge node device, a distribution service company, a distribution service device, or a broadcast station accommodated in this network is a one-path setting copy packet having a destination address of all 0s and a source address only. Is periodically copied to each skewered multi-ring network, copied in each ring, raised, and the source address is written to the drop address table at the entrance of each ring. The configuration copy packet is not copied on the node that has reached the ring, but is in the form of a tree under each ring. It is configured to copy at the node connected to the node and the node moving to the adjacent ring and move to the adjacent ring, copy at the node moving to the adjacent ring and move to the adjacent ring, and discard the one-path setting copy packet that makes one round in each ring. The single path setting copy packet copied in the top ring of each tree network is copied to the subordinate ring, copied in all the nodes on the ring in each ring, and its source address in the drop address table at each ring entrance In a ring network in which a large number of skewered connection packets are discarded, a packet that is dropped from a clockwise ring and a counterclockwise ring are connected between disjunctive rings. There is a transmission path through which packets dropped from the DROP join and are transmitted, and the packets on that transmission path are separated from the ADD destination. When going up to the ring, or in the lower tree network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged and transmitted. When the packet of the transmission path goes up to the upper ring or lower ring of the ADD destination, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the path setting packet. In the configuration in which the address of the drop address table is set by the initial setting packet, the calling packet, or the route setting packet, the initial setting packet, the calling packet, or the route setting packet is stored in one or both of the drop address tables. Record the source address and add the source address of the packet. The normal packet other than the outgoing call has one or a ADD address table corresponding to the ring transmission path, and corresponds to the source address or destination address. When the selected ring transmission path is written, or when the source address or the destination address is written corresponding to the selected ring transmission path, the ring transmission path name is set to the ADD destination ring transmission path selection bit area of the packet. Is sent to the ring transmission line, and if it is not written or there is no table, it is sent to the ring transmission line indicated by the lower specific bit of the source address or destination address of the packet. Or drop address test for ring transmission line If the ADD destination ring transmission path corresponding to the source address of the packet is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. In a node configuration in which the node cannot identify the initial setting packet, the calling packet, the route setting packet, and the drop address table setting packet, all the ADD packets have one or an ADD address table corresponding to the ring transmission path, and the source If the selected ring transmission path is written corresponding to the address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as the packet. ADD destination ring transmission line If there is no table, or if there is no table, the drop address table corresponding to one or the ring transmission path is searched, and the packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and if and when it is written, the selected ring transmission line is not written. Is sent to the ring transmission path indicated by the low-order specific bits of the source address or destination address of the packet, and if the drop address table contains the ADD destination ring transmission path name corresponding to the source address of the packet, the ring transmission Write the path name to the ADD destination ring transmission path selection bit area of the packet The packet that is sent to the ring transmission path and transferred on the ring is the address of one drop address table in which only the drop address is written, or the drop in which only the drop address corresponding to the ring input to the node of the packet is written. If the address in the address table matches the destination address of the packet, DROP, pass if there is not, and add a multi-round bit to the multi-round bit area of the packet transferred by the ADD node or multi-round bit grant node If the node connected to the upper ring determines that there is no destination even if it makes one round on the ring, it goes up to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped. There is no destination even if it makes a round on the skewered ring In this case, the packet is converted into a copy packet, copied at the connection ring node that moves to the adjacent ring, and then moved to the adjacent ring. If it is discarded and there is no destination in the adjacent ring, a multi-round bit is added, and the connection ring node moves to the adjacent ring and then moves to the adjacent ring. At that time, the multi-round bit of the packet is dropped. This is a double ring network in which one-flow operation or MAC operation type path operation is performed.

  Next, FIG. 33 shows a fifteenth embodiment of the one-stroke ring network of the present invention. This embodiment corresponds to the nineteenth aspect. In this embodiment, a terminal or an edge node is accommodated under each of a plurality of rings of a mesh ring network in which a large number of ring networks that transfer packets having a source address and a destination address are connected in a plane. In this embodiment, the edge node sends a single path setting packet to the ring edge of the upper planar mesh ring network, and the single path is always set. The operation of this embodiment will be described below.

  The edge node MACSB periodically sends (1) 'MAC B0 (one-path setting packet), and the packet is dropped as a ring edge of the upper, planar mesh ring network as (2)' MAC B0. The packet is discarded leaving the MAC source address B in the address table.

  On the other hand, the terminal MACSC (1) sends out a MACBC0 call packet, and (2) the MACBC0 call packet leaves the MAC source address C in the drop address table at the ring edge of the planar mesh ring network. , Go up to the 0-system ring, and if there is no destination even after one round, it is converted to a copy packet and copied to the adjacent ring. Each ring of the planar mesh ring network has four connection transmission lines between adjacent rings and is connected to each of the four adjacent rings.

  In FIG. 33, the copy packet is copied to two adjacent rings. At this time, (3) the copy bit of the copy packet of MACBC0 is deleted at the ring exit and goes up to the adjacent ring. At that time, the source address C is left in the drop address table at the entrance of the ring, and it goes up to the ring. If there is no destination on each ring, the copy packet that goes up to two adjacent rings is converted into a copy packet and copied to the adjacent ring. However, copying of the copy packet to the adjacent ring is performed only for a node that does not have the source address of the packet in the drop address table of the exit. Therefore, the copy packet will not be reversed. However, in this network, a plurality of temporary routes are set for the call packet.

  The above operation is performed on each ring of the planar mesh ring network. Finally, in the node of the drop address table having the source address B set by the one-path setting packet from the edge node, (6) MACBC0 is Dropped and connected to one route already set. The packet arrives at the edge node as (7), selects one route from a plurality of routes in the planar mesh network with the response packet, sets a reverse route, and reaches the originating terminal MACSC. When there are a plurality of exits in one ring in the planar mesh network, it is necessary to select the exit of the shortest path among them.

  Next, a sixteenth embodiment of the one-stroke ring network of the present invention is shown in FIG. This embodiment corresponds to claims 20 and 21. In this embodiment, a terminal or an edge node is accommodated under each ring of a ring network in which a large number of ring networks that transfer packets having a source address and a destination address are connected in a skewered manner. In this embodiment, an edge node sends a single path setting packet to a ring network connected in a large number of skewers, and a single path is always set. The operation of this embodiment will be described below. The edge node MACSB (1) raises the MAC # B0 single path setting packet to the edge of the ring network in which a number of `MAC * B0 single path setting packets are connected in a skewered manner, and drops the edge address table The packet is discarded, leaving the MAC source address B.

  On the other hand, the terminal MACSC (1) raises the MACBC0 call packet to the edge of the ring network in which many MACBc0 call packets are connected in a skewered manner, and leaves the MAC source address C in the drop address table at that edge. Then, if there is no destination even after one round of going up to the 0-system ring, it is converted to a multi-round packet, and at the node that moves to the adjacent ring, (3) the multi-round bit of MACBC0 is removed and dropped, Move to adjacent ring. The drop address table of the node that goes up to the adjacent ring leaves the MAC source address C and goes up to the 0-system ring. Similarly, the destination address B of the packet is set in the drop address table. In (5), the MACBC0 packet is dropped, and the edge node is reached according to the set one path. Upon reception of the packet (6) MACBC0, a response packet is returned, and a reverse path in the skewered multiple ring network is set.

  In the fourteenth embodiment of the one-stroke ring network of the present invention described above, the edge node device, distribution service company, distribution service device, or broadcasting station accommodated in this network has a destination address of all 0. In this configuration, a single path setting copy packet having only the source address is copied once and periodically to the skewed multiple ring network, and then copied to each ring, and the source address is written to the drop address table at the entrance of each ring. Yes, the single path setting copy packet that goes up to the skewered multiple ring is not copied at the node that goes up to the ring, but is copied at the node connected to the tree network under each ring and the node that moves to the adjacent ring and copied to the adjacent ring Move to the adjacent ring and copy to the adjacent ring. Single routing copied packet 1 laps ring is also configured to discard.

  Further, in the ninth embodiment of the one-stroke ring network of the present invention described above, the edge address device, distribution service company, distribution service device or broadcasting station accommodated in this network has the destination address all 0. The single route setup copy packet having only the source address is once or periodically raised to the mesh network ring above the uppermost ring, and the single route setup copy packet copied by the mesh network ring is sent to the mesh network and received by the receiving side. The mesh network ring ADD node writes the source address of the packet in the drop address table, then circulates the ring, does not copy the mesh network connection node, and copies it to the lower ring network connection node to the subordinate ring It is configured to distribute, discarding the packet after one round and copying it in each ring. The single path setting copy packet is copied to the subordinate ring, copied to all nodes on the ring in each ring, the source address is written in the drop address table at the entrance of each ring, and one path that goes around each ring once Some configuration copy packets are discarded.

  In claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, the method of assigning multi-turn bits at the ADD node is the source address or destination address of the packet to be ADDed at the ADD node of the packet. When a packet that circulates on the ring is input to the ADD node, the packet added by the 0 system 1 system of the ring is added to the corresponding ADD destination 0 system or 1 system ring transmission path with the lower specific bit. A method of giving a multi-round bit to a packet when the source address of the packet is in the drop address table corresponding to the ring transmission path when the lower specific bit of the source address or the destination address matches 0 or 1 It is.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, the multi-round bit assignment method in the ADD node is such that the packet has an ADD destination transmission line identification bit, When the circulating packet is input to the ADD node, when the ADD destination transmission path identification bit of the input packet matches the 0 system 1 system of the ring, and the source address of the packet is in the drop address table, In this method, multi-round bits are added to the packet.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, a multi-round bit is attached by a multi-round bit grant node so that the node corresponds to the ring and the source corresponding to the ring A function for assigning a multi-round bit only to a packet having a low-order specific bit for an address, a low-order specific bit for a destination address, or an ADD destination ring transmission path selection bit, and a function for giving a multi-round bit for discarding to other packets The multi-round bit has a function of discarding a packet having a total of 2 or 11 bits and the discard multi-round bit has a total of 2 or 11 bits.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, in each node on the ring, the drop address table has active and spare, and the source address of the ADD packet to the ring Writing to the drop address table is performed on the active side, and packets that circulate on the ring are first searched for the destination address of the packet in the node's current drop address table. If the drop address table is searched, if there is no drop, if the packet is not found, the packet is passed to the ring output. Clear all memory in the Le and working, has a function of the drop address table it was working up to that reserved.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, the drop address table having the current and spare addresses is such that a normal packet ADDed to a node has a source address on the active side. If it is not in the drop address table, the one-path setup packet written in that table and ADDed to the node sent periodically from the server, router, or edge node will have either the source address or the spare drop address table. If the packet is not written in either or both, the packet is written in the unwritten table. On the other hand, when the packet is input to the node from the ring, the destination address or source address is searched first in the current drop address table. If not, spare drop address table If the spare drop address table does not hit the search for packets input from the ring for a certain time longer than the period of the one-way packet sent periodically, the spare drop address In addition to clearing the memory of the table, it has a function of using a spare drop address table as a working current, and making the current drop address table a spare.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, the address setting in the ADD address table on the ring has a function of automatically setting for steering at the time of loopback. .

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, when a packet with multi-round bits is dropped from its own ring because it moves to an upper ring or an adjacent ring. Has the function of leaving the destination address of the packet in the drop address table at the exit.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, a packet to which a multi-round bit is attached moves to a higher ring or an adjacent ring and is stored in a drop address table at the entrance of the ring. After leaving the source address, it has the function of removing the multi-round bit and going up to the corresponding ring.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, a packet provided with a multi-round bit, an initial setting packet, a calling packet, a path setting packet, and a one-path setting packet, It is also possible to look at the drop address table when only the call packet goes up the ring, and to make the normal packet and the unknown packet not look at the drop address table other than the drop address table going up to the lowest ring.

  Also, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, the copy bit of the copy packet used in this network is 7 from the head of the MAC destination address of the packet having the MAC header. The seventh bit or the seventh bit from the beginning of the MAC source address of the packet having the MAC header may be used.

  In claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, the MAC packet used in this network is the seventh bit and type from the beginning of the MAC source address and MAC destination address. 2 bits from the first bit of the type field or VLAN identifier area, ie, the first bit after the MAC source address, which is a bit excluding the IP data display bit, ARP display bit, RARP display bit of the field and 1 bit of 0X8100 which is the VLAN identifier It is also possible to use a total of 9 bits of the third, fourth, sixth, seventh, ninth and tenth as control bits in this network.

  In claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, the MAC packet used in this network is the seventh bit and type from the beginning of the MAC source address and MAC destination address. 2, 3, 4, 6, 7 from the first bit of the type field or VLAN identifier area, ie, the first bit after the MAC source address, which is a bit excluding the IP data display bit of the field and the 1 bit of 0X8100 which is the VLAN identifier , 9, 10, 11, 12, 13, 14, 15, 16 can be used as control bits in this network.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, an OAM MAC packet is defined by one bit of the type field and the empty bit of the VLAN identifier, and after 16 bits of the type field. An OAM field is created, and a control signal including a CRC is sent to the OAM field. At the receiving node, all bits in the area corresponding to the OAM field of the MAC packet are copied and extracted, then CRC calculation is performed, and error correction is performed. Only when it is possible, it can be used as a control signal.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, the MAC packet used in this network includes the seventh bit from the head of the MAC source address and the MAC destination address, It is also possible to use the mobile phone terminal phone number and the fixed phone number for identification with the MAC packet in the existing network when sending it by including it in the MAC address of the MAC packet.

  Further, in claims 1 to 3 and 5 to 16 of the one-stroke ring network of the present invention described above, when converting the telephone number of the mobile phone terminal and the telephone number of the fixed telephone to the MAC address of the MAC packet, It is also possible to use a method of converting 0 to 9 of the decimal representation number of a number into a 4-bit binary bit string.

  In Embodiments 1 to 16 of the one-stroke ring network described above, the MAC operation type path operation is performed in the MAC operation type path operation network, the MAC operation type 1 flow operation network and the higher level network, and the MAC operation type 1 in the lower level network. There is a network with flow operation.

  In a network that operates on a MAC operation path, a packet that operates on a MAC operation path includes a packet in which an address on which the path MAC operation is performed is a MAC address of a MAC in MAC packet in which a MAC header is added before an IP over MAC packet, or an IP A packet that is a global IP address that has the private IP address of the IP over MAC packet in its option area, or a packet whose MAC destination address of the IP over MAC is a common address. A packet that is a MAC address, or a packet that has two VPI addresses in a double cell header of an ATM cell that has a double cell header, or a path that operates as a path MAC A packet in which the AC operating address is two VPI addresses in the cell header of an ATM cell having another VPI before the cell header, or a packet in which the path MAC operating address is the MAC address of a path ATM cell over MAC packet It is.

  Further, in a network that operates with a MAC operation type 1 flow, a packet that operates with a MAC operation type 1 flow has a packet that has an MAC address of an IP over MAC packet, or an address that operates with a 1 flow MAC packet. A packet that is the MAC of a packet whose MAC destination address of IP over MAC is a common address and whose MAC source address is a single address, or a packet whose MAC address of an ARP packet is an address that operates 1 flow MAC, or 1 flow A packet whose MAC address is an IP address of an IP over MAC packet, a packet whose one-flow MAC address is an IP address of an IP packet, or an address where a one-flow MAC operates is an ATM A packet that is a MAC address of a cell over MAC packet, or a packet in which an address that operates a one-flow MAC is two VPI + VCI or two VCI addresses of a double cell header of an ATM cell having a double cell header.

  In the higher network, the MAC operation type path operation is performed, in the lower network, the MAC operation type 1 flow operation is performed in the lower network, and in the lower network, the address in which the 1 flow MAC operation is performed is the MAC of the IP over MAC packet. In the upper network, the address where the one-flow MAC operation is the IP address of the IP over MAC packet in the upper network, or in the lower network, the address where the one-flow MAC operation is the MAC address of the IP over MAC packet, An address at which one flow MAC operates is a packet whose IP address is an IP packet.

  As described above, the node device that performs the one-stroke writing operation of the present invention has an effect that the operation is simple and the operation can be performed at high speed because the node address table includes only the drop address from the ring. In addition, since there is no flooding of unknown packets, there is an effect that congestion is unlikely to occur. In addition, the drop table does not have a timer for each address like the MAC address of the conventional table, but the memory of the entire table can be periodically cleared at one time. There is an effect that can also be applied to addresses. In addition, since the drop address table can be divided into a plurality of tables and used in cascade connection, there is an effect that a high-speed node device can be realized.

  In addition, the one-stroke ring network of the present invention has an effect of realizing a large-scale network by adopting a network configuration in which a large number of rings are connected in a tree shape or skewered shape for a one-stroke writing operation. In addition, since the number of bits required for the one-stroke network according to the present invention is small, there is an effect that can be realized only by using the free area of the header of the conventional packet without newly using a header for the one-stroke network. is there.

  In addition, since the one-stroke network of the present invention automatically sets the transfer path easily, it can serve as both a signaling network and a data transfer network, and has the effect of being applicable to a mobile network.

DESCRIPTION OF SYMBOLS 10 ... Node apparatus 11, 19 ... Drop address table, 12 ... 1 system ring transmission path, 13 ... 0 system ring transmission path, 15 ... Packet header reading circuit, 16 ... Packet header reading circuit of ADD transmission path, 22 ... ADD Source address table

Claims (104)

Applied to a single double ring network that forwards packets with source and destination addresses,
Each node on the ring has either a single drop address table with a drop address written or a drop address table with the same drop address written for the ring transmission line, or one more or a ring transmission line for steering. Or, it is a configuration having an ADD address table in which a source address or a destination address corresponding to the selected ring transmission path is automatically set when the shortest path is set,
In this network, when a transmission line failure or a node failure occurs, a double ring consisting of a 0 system and a 1 system is configured such that the transmission line loops back at the nodes on both sides of the failure point or the transmission line loops back at the nodes on both sides of the failure node. A net,
In the configuration in which the node recognizes the initial setting packet, the calling packet, or the route setting packet, and the address of the drop address table is set by the initial setting packet, the calling packet, or the route setting packet, An initialization packet, a call packet, or a routing packet records the source address of the packet in one or both drop address tables, and is stored in the ring transmission path corresponding to the lower specific bit of the source address or destination address of the packet. Send out,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
If one of the packets transferred on the ring input to the node or the address of the input drop address table corresponding to the ring matches the destination address of the packet, DROP,
A packet dropped from the clockwise ring at the DROP destination and a packet dropped from the counterclockwise ring merge,
Otherwise, if there is no destination even after one round on the ring, it is converted to a copy packet with a copy bit, copied to the port exiting from the ring at each node, and the one-round copy packet is discarded It is characterized by the configuration,
A packet transfer method in a double ring network in which a MAC operation type 1 flow operation or a MAC operation type path operation is performed. Applied to a single double ring network that forwards packets with source and destination addresses,
Each node on the ring has either a single drop address table with a drop address written or a drop address table with the same drop address written for the ring transmission line, or one more or a ring transmission line for steering. Or, it is a configuration having an ADD address table in which a source address or a destination address corresponding to the selected ring transmission path is automatically set when the shortest path is set,
In this network, when a transmission line failure or a node failure occurs, a double ring consisting of a 0 system and a 1 system is configured such that the transmission line loops back at the nodes on both sides of the failure point or the transmission line loops back at the nodes on both sides of the failure node. A net,
Each router, server, edge node, MAC, or IP converter accommodated in this network periodically raises a single path setup packet having a destination address of all 0s and only a source address to the ring, and enters the ring entrance. The source address is written to a certain drop address table.
In the configuration in which the node recognizes the initial setting packet, the calling packet, or the route setting packet, and the address of the drop address table is set by the initial setting packet, the calling packet, or the route setting packet, An initialization packet, a call packet, or a routing packet records the source address of the packet in one or both drop address tables, and is stored in the ring transmission path corresponding to the lower specific bit of the source address or destination address of the packet. Send out,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no, send it to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet,
On the other hand, when the ADD destination ring transmission path corresponding to the source address of the packet is written in one or the drop address table corresponding to the ring transmission path, the ring transmission path name is stored in the ADD destination ring transmission path selection bit area of the packet. Write and send to that ring transmission line,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
If one of the packets transferred on the ring input to the node or the address of the input drop address table corresponding to the ring matches the destination address of the packet, DROP,
A packet dropped from the clockwise ring at the DROP destination and a packet dropped from the counterclockwise ring merge,
Other than that, if there is no destination even if it goes around on the ring once, it is configured to be discarded, or it is converted into a copy packet with a copy bit and copied to the port exiting from the ring at each node The configuration is such that the copy packet after one round is discarded.
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. Applied to a single double ring network that forwards packets with source and destination addresses,
Each node on the ring has either a single drop address table with a drop address written or a drop address table with the same drop address written for the ring transmission line, or one more or a ring transmission line for steering. Or, it is a configuration having an ADD address table in which a source address or a destination address corresponding to the selected ring transmission path is automatically set when the shortest path is set,
In this network, when a transmission line failure or a node failure occurs, a double ring consisting of a 0 system and a 1 system is configured such that the transmission line loops back at the nodes on both sides of the failure point or the transmission line loops back at the nodes on both sides of the failure node. A net,
The packet to be ADDed to the ring of the node has one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or the destination address, or the selected ring transmission path When the source address or the destination address is written in correspondence, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet, sent to the ring transmission path, and when not written and When there is no table, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination corresponding to the source address of the packet is stored in one or the drop address table corresponding to the ring transmission path. When a ring transmission line is written The, writes the ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
A packet dropped from the clockwise ring at the DROP destination and a packet dropped from the counterclockwise ring merge, and the others pass through.
A packet transfer method in a double ring network operating in a MAC operation type path. Applied to a multi-stage ring tree network, in which ring networks that transfer packets with source and destination addresses are connected in a tree shape,
Each node on the ring has either a single drop address table with a drop address written or a drop address table with the same drop address written for the ring transmission line, or one more or a ring transmission line for steering. Or, it is a configuration having an ADD address table in which a source address or a destination address corresponding to the selected ring transmission path is automatically set when the shortest path is set,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Between the upper ring and the lower ring, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and the packet on the transmission path is the upper ring or lower rank of the ADD destination. When going up to the ring, or when the packet goes up to the lowest ring, there is an ADD address table corresponding to one or the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address. If there is a source address or destination address corresponding to the selected ring transmission path, write the ring transmission path name in the ADD destination ring transmission path selection bit area of the packet and transmit the ring transmission. When it is sent to the road and it is not written or there is no table When the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, if one or the ADD destination ring transmission path is written in the drop address table corresponding to the ring transmission path, that ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP it, otherwise pass it through.
A packet transfer method in a double ring network operating in a MAC operation type path. Applied to a multi-stage ring tree network, in which ring networks that transfer packets with source and destination addresses are connected in a tree shape,
Each node on the ring has either a single drop address table with a drop address written or a drop address table with the same drop address written for the ring transmission line, or one more or a ring transmission line for steering. Or, it is a configuration having an ADD address table in which a source address or a destination address corresponding to the selected ring transmission path is automatically set when the shortest path is set,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each router, server, edge node, MAC, or IP conversion device accommodated in this network raises the one-route setting packet with the destination address of all 0 and only the source address once and periodically to the top ring. , And write to the drop address table at the entrance of the ring,
Between the upper ring and the lower ring, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and the packet on the transmission path is the upper ring or lower rank of the ADD destination. When going up to the ring, or when the packet goes up to the lowest ring, the node recognizes the initialization packet, call packet or route setup packet and sets the address of the drop address table to the initialization packet or source. In a configuration using call packets or routing packets, the initial setting packet, calling packet or routing packet records the source address of the packet in one or both drop address tables, and the source address or destination address of the packet. Lower specific bit of Sent to the ring transmission path corresponding to,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
When there is no destination, the node connected to the upper ring determines that there is no destination even if it makes one round on the ring by adding a multi-round bit to the packet transferred by the ADD node or the multi-round bit grant node. It is a configuration that drops at that node, goes up to the upper ring, and then drops the multi-turn bit,
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. Applied to a multi-stage ring tree network, in which ring networks that transfer packets with source and destination addresses are connected in a tree shape,
Each node on the ring has either a single drop address table with a drop address written or a drop address table with the same drop address written for the ring transmission line, or one more or a ring transmission line for steering. Or, it is a configuration having an ADD address table in which a source address or a destination address corresponding to the selected ring transmission path is automatically set when the shortest path is set,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each edge node device, distribution service company, distribution service device, or broadcasting station accommodated in this network has a one-way destination copy packet that has a destination address of all 0 and only a single source address. The single path setup copy packet that is copied up to the upper ring and copied in the uppermost ring is copied to the subordinate ring, copied in all nodes on each ring, and its source address is stored in the drop address table at the entrance of each ring. And the one-path setting copy packet that goes around each ring once is discarded,
Between the upper ring and the lower ring, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and the packet on the transmission path is the upper ring or lower rank of the ADD destination. When going up to the ring, or when the packet goes up to the lowest ring, the node recognizes the initialization packet, call packet or route setup packet and sets the address of the drop address table to the initialization packet or source. In a configuration using call packets or routing packets, the initial setting packet, calling packet or routing packet records the source address of the packet in one or both drop address tables, and the source address or destination address of the packet. Lower specific bit of Sent to the ring transmission path corresponding to,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
When there is no destination, the node connected to the upper ring determines that there is no destination even if it makes one round on the ring by adding a multi-round bit to the packet transferred by the ADD node or the multi-round bit grant node. It is a configuration that drops at that node, goes up to the upper ring, and then drops the multi-turn bit,
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A ring network for transferring packets having source addresses and destination addresses is provided under each ring of a mesh ring network in which a large number of ring networks for transferring packets having source addresses and destination addresses are connected in a plane. It is a complex network that connects the top rings of a multistage ring tree network connected in a tree shape,
In this network, each node on the ring has only one drop address table in which a drop address is written or a drop address table in which the same drop address is written in correspondence with the ring transmission path. Furthermore, it is a configuration having an ADD address table in which a source address or a destination address corresponding to a selected ring transmission path is automatically set at the time of steering or shortest path setting corresponding to one or a ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
A router, server, edge node, MAC, or IP conversion device accommodated in this network is connected to many single-route setting packets that have a destination address of only 0 and only a source address once and periodically in a plane. Up to the ring edge of the mesh ring network, and write the source address to the drop address table at the entrance of each ring,
In a mesh ring network in which a large number of planes are connected, there is a transmission path between a connection ring and a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted. When the packet goes up to the ADD destination disjunction ring, or in the lower tree network, a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring join between the upper ring and the lower ring. If there is a transmission path to be transmitted and the packet of that transmission path goes up to the upper or lower ring of the ADD destination, or if the packet goes up to the lowermost ring,
In a configuration in which a node recognizes an initialization packet, a call packet, or a route setup packet, and sets an address in the drop address table using the initialization packet, the call packet, or the route setup packet, the initialization packet, the call packet, or the route The setting packet records the source address of the packet in one or both drop address tables, and sends it to the ring transmission line corresponding to the lower specific bit of the source address or destination address of the packet,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
When there is no destination, the node connected to the upper ring determines that there is no destination even if it makes one round on the ring by attaching a multi-round bit to the packet transferred by the ADD node or the multi-round bit granting node. Drop at that node and go up to the upper ring, at which time the multi-round bit of the packet is dropped,
When there is no destination on the ring that is connected to the mesh ring network that is connected in a large number of planes, a ring transmission path that connects a plurality of horizontal rings by setting a multi-round bit in a packet transferred by an ADD node or a multi-round bit grant node To the side ring, at which time the multi-round bit of the packet is dropped, and the packet with the multi-round bit that goes around the ring is discarded.
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A ring network that forwards packets with source addresses and destination addresses is treeed under each ring of a ring network in which many ring networks that forward packets with source addresses and destination addresses are connected in a skewered manner. A multi-stage ring tree network connected to the top ring of a multi-stage ring tree network,
In this network, each node on the ring has only one drop address table in which a drop address is written or a drop address table in which the same drop address is written in correspondence with the ring transmission path. Furthermore, it is a configuration having an ADD address table in which a source address or a destination address corresponding to a selected ring transmission path is automatically set at the time of steering or shortest path setting corresponding to one or a ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Routers, servers, edge nodes, MAC, IP converters accommodated in this network each have a destination address of all 0s, and a single path setup packet having only a source address once and periodically skewed multiple ring network Up, and write the source address to the drop address table at the entrance of each ring,
Between the upper ring and the lower ring, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and the packet on the transmission path is the upper ring or lower rank of the ADD destination. When going up to the ring, or when the packet goes up to the lowest ring, the node recognizes the initialization packet, call packet or route setup packet and sets the address of the drop address table to the initialization packet or source. In a configuration using call packets or routing packets, the initial setting packet, calling packet or routing packet records the source address of the packet in one or both drop address tables, and the source address or destination address of the packet. Lower specific bit of Sent to the ring transmission path corresponding to,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If it does not exist, it passes as it is, and by connecting a multi-round bit to the multi-round bit area of the packet transferred by the ADD node or multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring Among the two nodes, when judged by the first node, it rises to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped.
If there is no destination in the top skewered ring once around the ring, it is converted to a copy packet, copied at two nodes for each connected ring that moves to the adjacent ring, and then moved to the adjacent ring. If there is no destination even in the adjacent ring, it will be a multi-round packet, and it will be copied to the adjacent ring and copied to two adjacent nodes for each connection ring that moves to the adjacent ring. At that time, the multi-round bit and copy bit of the packet are dropped, and the copy packet that makes one round in each original ring is discarded
The node connecting the upper and lower rings allows all packets input to that node to pass through when the node's inter-ring connection transmission path fails or when the transmission path destination node fails.
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A ring network that forwards packets with source addresses and destination addresses is treeed under each ring of a ring network in which many ring networks that forward packets with source addresses and destination addresses are connected in a skewered manner. A multi-stage ring tree network connected to the top ring of a multi-stage ring tree network,
In this network, each node on the ring has only one drop address table in which a drop address is written or a drop address table in which the same drop address is written in correspondence with the ring transmission path. Furthermore, it is a configuration having an ADD address table in which a source address or a destination address corresponding to a selected ring transmission path is automatically set at the time of steering or shortest path setting corresponding to one or a ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Routers, servers, edge nodes, MAC, IP converters accommodated in this network each have a destination address of all 0s, and a single path setup packet having only a source address once and periodically skewed multiple ring network Up, and write the source address to the drop address table at the entrance of each ring,
In a ring network in which a large number of skewers are connected, there is a transmission path between the connecting and disconnecting rings where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged and transmitted. Or the lower ring, in the lower tree network, a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are joined and transmitted between the upper ring and the lower ring. If the transmission path packet goes up to the ADD destination upper ring or lower ring, or if the packet goes up to the lowest ring, the node Recognizes the route setting packet and sets the address of the drop address table to the initial setting packet or call packet. In a configuration in which a route setup packet is used, an initial setup packet, a call packet, or a route setup packet records the source address of the packet in one or both drop address tables, and is subordinate to the source address or destination address of the packet. Send it to the ring transmission line corresponding to the specific bit,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
A node that passes through if not present, and connects to the higher ring that there is no destination even if it makes one round on the ring by attaching a multi-round bit to the multi-round bit area of the packet transferred by the ADD node or multi-round bit grant node If it is judged by the above, it rises to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped.
If there is no destination even after one round on the ring in the top skewered ring, it is converted to a copy packet, copied at the connection ring node that moves to the adjacent ring, and then moved to the adjacent ring. At that time, the copy bit of the packet is Drop and go up to the ring, discard the copy packet that made one round in each original ring,
Furthermore, if there is no destination even in the adjacent ring, the multi-round bit is attached, and further, the connection ring node moves to the adjacent ring and moves to the adjacent ring, and at that time, the multi-round bit of the packet is dropped.
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A ring network that forwards packets with source addresses and destination addresses is treeed under each ring of a ring network in which many ring networks that forward packets with source addresses and destination addresses are connected in a skewered manner. A multi-stage ring tree network connected to the top ring of a multi-stage ring tree network,
In this network, each node on the ring has only one drop address table in which a drop address is written or a drop address table in which the same drop address is written in correspondence with the ring transmission path. Furthermore, it is a configuration having an ADD address table in which a source address or a destination address corresponding to a selected ring transmission path is automatically set at the time of steering or shortest path setting corresponding to one or a ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each edge node device, distribution service company, distribution service device, or broadcasting station accommodated in this network once or periodically sends a single-route setting copy packet with the destination address of all 0s and only the source address. To the skewered multi-ring network, copy each ring, raise it, and write the source address to the drop address table at the entrance of each ring. Do not copy at the node that goes up to the ring, copy at the node connected to the tree network under each ring and the node that moves to the adjacent ring, and move to the adjacent ring, and copy at the node that moves to the adjacent ring and move to the adjacent ring Configuration that discards one-path setting copy packet that makes one round in each ring Yes,
The single path setting copy packet copied in the top ring of each tree network is copied to the subordinate ring, copied in all the nodes on each ring, and the source address is stored in the drop address table at each ring entrance. Write, one-path setting copy packet that goes around each ring once is discarded,
In a ring network in which a large number of skewers are connected, there is a transmission path between the connecting and disconnecting rings where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are merged and transmitted. Or the lower ring, in the lower tree network, a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are joined and transmitted between the upper ring and the lower ring. If the transmission path packet goes up to the ADD destination upper ring or lower ring, or if the packet goes up to the lowest ring, the node Recognizes the route setting packet and sets the address of the drop address table to the initial setting packet or call packet. In a configuration in which a route setup packet is used, an initial setup packet, a call packet, or a route setup packet records the source address of the packet in one or both drop address tables, and is subordinate to the source address or destination address of the packet. Send it to the ring transmission line corresponding to the specific bit,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
A node that passes through if not present, and connects to the higher ring that there is no destination even if it makes one round on the ring by attaching a multi-round bit to the multi-round bit area of the packet transferred by the ADD node or multi-round bit grant node In this case, the node goes up to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped, and if there is no destination even after one round of the ring in the highest skewered ring, the copy is made. The packet is converted to a packet, copied at the connection ring node that moves to the adjacent ring, and moved to the adjacent ring. At that time, the copy bit of the packet is dropped and the ring is raised, and the copy packet that has made one round in each original ring is discarded. If there is no destination in the adjacent ring, a multi-round bit is added, and the adjacent ring is connected at the connection ring node that moves to the adjacent ring. Moved to, then a multi-orbiting bits drop configuration of the packet,
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. Applied to a multi-stage ring tree network, in which ring networks that transfer packets with source and destination addresses are connected in a tree shape,
Each node on the ring has either a single drop address table with a drop address written or a drop address table with the same drop address written for the ring transmission line, or one more or a ring transmission line for steering. Or, it is a configuration having an ADD address table in which a source address or a destination address corresponding to the selected ring transmission path is automatically set when the shortest path is set,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each router, server, edge node, MAC, or IP conversion device accommodated in this network raises the one-route setting packet with the destination address of all 0 and only the source address once and periodically to the top ring. The source address is written to the drop address table of the ring edge,
Between the upper ring and the lower ring, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and the packet on the transmission path is the upper ring or lower rank of the ADD destination. When going up the ring, or when the packet goes up to the lowest ring, the node recognizes the initialization packet, call packet or route setup packet and sets the address of the drop address table to the initialization packet or call. In a configuration that uses packets or routing packets, the initialization packet, call packet, or routing packet records the source address of the packet in one or both drop address tables, and the source address or destination address of the packet. Lower specific bit Sent to the corresponding ring transmission path,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or the multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring. Of the two nodes, when judged by the first node, the node goes up to the upper ring, and at that time, the multi-round bit of the packet is discarded.
If there is no destination in the uppermost ring even if it goes around the ring once, it will be sent to the existing Internet network.
The node connecting the upper and lower rings allows all packets input to that node to pass through when the node's inter-ring connection transmission path fails or when the transmission path destination node fails.
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets with source addresses and destination addresses are connected in a tree shape. Applied to the mesh network connected to the mesh network ring above the top ring of the multi-stage ring tree network of
In one double ring network, each node on the ring has only one drop address table in which a drop address is written, or only one drop address table in which the same drop address is written corresponding to the ring transmission path. Or, it is a configuration having a ADD address table in which the source address or destination address corresponding to the ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node. The mesh net ring just above the top ring is connected to the mesh net,
Each router, server, edge node, MAC, or IP conversion device accommodated in this network has a single destination address with all destination addresses and only the source address once and periodically on the top ring. Up to the mesh network ring, and converted into a copy packet and circulated. The packet copied at each node is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network, and the mesh network ring ADD on the receiving side After the source address of the packet is written in the drop address table at the node, the packet with the copy bit and multi-turn bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded And
In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together. When the packet goes up to the upper ring or lower ring of the ADD destination, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the routing packet, and the address of the drop address table In the configuration in which the initial setting packet, the calling packet, or the route setting packet is set by the initial setting packet, the calling packet, or the route setting packet, the source address of the packet is recorded in one or both drop address tables, The source address or destination of the packet Sent to the ring transmission path corresponding to the lower specific bit dress,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or the multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring. When judged by a node, it rises to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped.
If there is no destination even if it goes around the ring in the top ring, it goes up to the mesh network ring above the top ring. If there is no destination, the packet is converted into a copy packet and circulated, and the packet copied at each node is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network, and the mesh network ring ADD node on the receiving side After writing the source address of the packet in the drop address table, the packet with the copy bit and multi-round bit is discarded, and the copy packet that goes around the mesh network ring of the sender is discarded. is there,
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets with source addresses and destination addresses are connected in a tree shape. Applied to the mesh network connected to the mesh network ring above the top ring of the multi-stage ring tree network of
In one double ring network, each node on the ring has only one drop address table in which a drop address is written, or only one drop address table in which the same drop address is written corresponding to the ring transmission path. Or, it is a configuration having a ADD address table in which the source address or destination address corresponding to the ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each edge node device, distribution service company, distribution service device or broadcasting station accommodated in this network has a one-way destination copy packet with a destination address of all 0 and a single-path setting copy packet having the source address only once and periodically at the top. Up to the mesh network ring above the ring, the one-path setting copy packet copied by the mesh network ring is sent to the mesh network, and the source address of the packet is written in the drop address table at the mesh network ring ADD node on the receiving side After that, it circulates the ring, does not copy at the mesh network connection node, copies it at the lower ring network connection node, and distributes it to the subordinate ring.
The single path setup copy packet copied in each ring is copied to the subordinate ring, copied in all the nodes on each ring, writes the source address in the drop address table at each ring entrance, and sets each ring The one-path setting copy packet that has made one round is configured to be discarded.
In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together. When the packet goes up to the upper ring or lower ring of the ADD destination, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the routing packet, and the address of the drop address table In the configuration in which the initial setting packet, the calling packet, or the route setting packet is set by the initial setting packet, the calling packet, or the route setting packet, the source address of the packet is recorded in one or both drop address tables, The source address or destination of the packet Sent to the ring transmission path corresponding to the lower specific bit dress,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or the multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring. When judged by a node, it rises to the upper ring at that node, and at that time, the multi-round bit of the packet is dropped.
If there is no destination even if it goes around the ring in the top ring, it goes up to the mesh network ring above the top ring. If there is no destination, the packet is converted into a copy packet and circulated, and the packet copied at each node is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network, and the mesh network ring ADD node on the receiving side After writing the source address of the packet in the drop address table, the packet with the copy bit and multi-round bit is discarded, and the copy packet that goes around the mesh network ring of the sender is discarded. is there,
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets with source addresses and destination addresses are connected in a tree shape. Applied to the mesh network connected to the mesh network ring above the top ring of the multi-stage ring tree network of
In one double ring network, each node on the ring has only one drop address table in which a drop address is written, or only one drop address table in which the same drop address is written corresponding to the ring transmission path. Or, it is a configuration having a ADD address table in which the source address or destination address corresponding to the ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each router, server, edge node, MAC, or IP conversion device accommodated in this network has a single destination address with all destination addresses and only the source address once and periodically on the top ring. Up to the mesh network ring, and converted into a copy packet and circulated. The packet copied at each node is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network, and the mesh network ring ADD on the receiving side After the source address of the packet is written in the drop address table at the node, the packet with the copy bit and multi-turn bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded And
In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together. When the packet goes up to the upper ring or lower ring of the ADD destination, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the routing packet, and the address of the drop address table In the configuration in which the initial setting packet, the calling packet, or the route setting packet is set by the initial setting packet, the calling packet, or the route setting packet, the source address of the packet is recorded in one or both drop address tables, The source address or destination of the packet Sent to the ring transmission path corresponding to the lower specific bit dress,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring. When judged by the first node of the two nodes, the node goes up to the upper ring, and at that time, the multi-round bit of the packet is dropped.
If there is no destination even if it goes around the ring in the top ring, it goes up to the mesh network ring above the top ring. If there is no destination, it is converted to a copy packet and circulated, and the copy packet is also sent to the existing Internet network. Look at the copy bit of the packet, write the source address of the packet in the source address table and then discard it, and discard the copy packet that goes around the source mesh network ring,
The node connecting the upper and lower rings allows all packets input to that node to pass through when the node's inter-ring connection transmission path fails or when the transmission path destination node fails.
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets with source addresses and destination addresses are connected in a tree shape. Applied to the mesh network connected to the mesh network ring above the top ring of the multi-stage ring tree network of
In one double ring network, each node on the ring has only one drop address table in which a drop address is written, or only one drop address table in which the same drop address is written corresponding to the ring transmission path. Or, it is a configuration having a ADD address table in which the source address or destination address corresponding to the ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each router, server, edge node, MAC, or IP conversion device accommodated in this network has a single destination address with all destination addresses and only the source address once and periodically on the top ring. Up to the mesh network ring, and converted into a copy packet and circulated. The packet copied at each node is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network, and the mesh network ring ADD on the receiving side After the source address of the packet is written in the drop address table at the node, the packet with the copy bit and multi-turn bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded And
In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together. When the packet goes up to the upper ring or lower ring of the ADD destination, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the routing packet, and the address of the drop address table In the configuration in which the initial setting packet, the calling packet, or the route setting packet is set by the initial setting packet, the calling packet, or the route setting packet, the source address of the packet is recorded in one or both drop address tables, The source address or destination of the packet Sent to the ring transmission path corresponding to the lower specific bit dress,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring. When judged by the first node of the two nodes, the node goes up to the upper ring, and at that time, the multi-round bit of the packet is dropped.
If there is no destination even if it goes around the ring in the top ring, it goes up to the mesh network ring above the top ring. If there is no destination, the packet is converted into a copy packet and circulated, and the packet copied at each node is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network, and the mesh network ring ADD node on the receiving side After writing the source address of the packet in the drop address table, the packet with the copy bit and multi-round bit is discarded, and the copy packet that goes around the mesh network ring of the sender is discarded. Yes,
The node connecting the upper and lower rings allows all packets input to that node to pass through when the node's inter-ring connection transmission path fails or when the transmission path destination node fails.
A packet transfer method in a double ring network operating in a MAC operation type path. A mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets with source addresses and destination addresses are connected in a tree shape. Applied to the mesh network connected to the mesh network ring above the top ring of the multi-stage ring tree network of
In one double ring network, each node on the ring has only one drop address table in which a drop address is written, or only one drop address table in which the same drop address is written corresponding to the ring transmission path. Or, it is a configuration having a ADD address table in which the source address or destination address corresponding to the ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each router, server, edge node, MAC, or IP conversion device accommodated in this network has a single destination address with all destination addresses and only the source address once and periodically on the top ring. Up to the mesh network ring, and converted into a copy packet and circulated. The packet copied at each node is converted into a packet having a copy bit and a multi-round bit and sent to the mesh network, and the mesh network ring ADD on the receiving side After the source address of the packet is written in the drop address table at the node, the packet with the copy bit and multi-turn bit is discarded, and the copy packet that goes around the mesh network ring of the transmission source is discarded And
In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together. When the packet goes up to the upper ring or lower ring of the ADD destination, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the routing packet, and the address of the drop address table In the configuration in which the initial setting packet, the calling packet, or the route setting packet is set by the initial setting packet, the calling packet, or the route setting packet, the source address of the packet is recorded in one or both drop address tables, The source address or destination of the packet Sent to the ring transmission path corresponding to the lower specific bit dress,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring. When judged by the first node of the two nodes, the node goes up to the upper ring, and at that time, the multi-round bit of the packet is dropped.
If there is no destination even if it goes around the ring in the top ring, it goes up to the mesh network ring above the top ring. If there is no destination, the packet is converted into a multi-copy packet and circulated, and the packet copied at each node is converted into a packet having a copy bit and a multi-cycle bit and transmitted to the mesh network. After writing the source address of the packet in the drop address table at the node, it circulates the ring, does not copy at the mesh network connection node, copies it at the lower ring network connection node, and makes one copy of the copy bit and multi-circulation bit The packet with a mark is discarded, and the copy packet that goes around the mesh network ring of the transmission source Also has a configuration to be discarded after copying,
The node connecting the upper and lower rings allows all packets input to that node to pass through when the node's inter-ring connection transmission path fails or when the transmission path destination node fails.
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets with source addresses and destination addresses are connected in a tree shape. Applied to the mesh network connected to the mesh network ring above the top ring of the multi-stage ring tree network of
In one double ring network, each node on the ring has only one drop address table in which a drop address is written, or only one drop address table in which the same drop address is written corresponding to the ring transmission path. Or, it is a configuration having a ADD address table in which the source address or destination address corresponding to the ring transmission path is automatically set at the time of steering or shortest path setting corresponding to the ring transmission path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each edge node device, distribution service company, distribution service device or broadcasting station accommodated in this network has a one-way destination copy packet with a destination address of all 0 and a single-path setting copy packet having the source address only once and periodically at the top. Up to the mesh network ring above the ring, the one-path setting copy packet copied by the mesh network ring is sent to the mesh network, and the source address of the packet is written in the drop address table at the mesh network ring ADD node on the receiving side After that, it circulates the ring, does not copy at the mesh network connection node, copies it at the lower ring network connection node, and distributes it to the subordinate ring.
The single path setup copy packet copied in each ring is copied to the subordinate ring, copied in all the nodes on each ring, writes the source address in the drop address table at each ring entrance, and sets each ring The one-path setting copy packet that has made one round is configured to be discarded.
In one double ring network, there is a transmission path between the upper ring and the lower ring where a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted together. When the packet goes up to the upper ring or lower ring of the ADD destination, or when the packet goes up to the lowest ring, the node recognizes the initial setting packet, the calling packet, or the routing packet, and the address of the drop address table In the configuration in which the initial setting packet, the calling packet, or the route setting packet is set by the initial setting packet, the calling packet, or the route setting packet, the source address of the packet is recorded in one or both drop address tables, The source address or destination of the packet Sent to the ring transmission path corresponding to the lower specific bit dress,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If it does not exist, it passes as it is, and by setting a multi-round bit in the multi-round bit area of the packet transferred by the ADD node or multi-round bit granting node, it is connected to the upper ring that there is no destination even if it makes one round on the ring. When judged by the first node of the two nodes, the node goes up to the upper ring, and at that time, the multi-round bit of the packet is dropped.
If there is no destination even if it goes around the ring in the top ring, it goes up to the mesh network ring above the top ring. If there is no destination, the packet is converted into a multi-copy packet and circulated, and the packet copied at each node is converted into a packet having a copy bit and a multi-cycle bit and transmitted to the mesh network. After writing the source address of the packet in the drop address table at the node, it circulates the ring, does not copy at the mesh network connection node, copies it at the lower ring network connection node, and makes one copy of the copy bit and multi-circulation bit The packet with a mark is discarded, and the copy packet that goes around the mesh network ring of the transmission source Also has a configuration to be discarded after copying,
The node connecting the upper and lower rings allows all packets input to that node to pass through when the node's inter-ring connection transmission path fails or when the transmission path destination node fails.
A packet transfer method in a double ring network that performs a MAC operation type 1 flow operation or a MAC operation type path operation. A mesh network ring is placed on the top ring of a multi-stage ring tree network in which ring networks that transfer packets with source addresses and destination addresses are connected in a tree shape. Applied to the mesh network connected to the mesh network ring above the top ring of the multi-stage ring tree network of
One double ring network has a configuration in which each node on the ring has a drop address table in which a drop address is written or a drop address table in which the same drop address is written corresponding to a ring transmission line.
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
The drop address table of the node of the mesh network ring has a configuration in which the upper bits of the destination address are embedded in each destination area, and one double ring network is clockwise between the upper ring and the lower ring. If there is a transmission path in which a packet dropped from the ring and a packet dropped from the counterclockwise ring are transmitted and the packet of that transmission path goes up to the upper ring or lower ring of the ADD destination, When going up to the lowest ring, if the upper destination address bit of the packet is not a regional address identifying the tree network, a through bit is set and the source address of the packet is stored in the node's drop address table. If there is no intermediate bit stream, the port exiting the ring If there is a number, the source address's intermediate bit string and its input port, and if there is only one port exiting the ring, simply write the intermediate bit string of the source address to the table, then the source address or destination of the packet If there is a ring transmission path indicated by the bit at the lower specific position of the address and an intermediate bit string of the source address of the packet, the ring transmission path indicated by the bit at the lower specific position of the source address or destination address of the packet , Send to the ring transmission path to be ADD written together with the intermediate bit string of the source address of the table, and pass through to the upper ring,
On the other hand, if the upper destination address bit of the packet is a regional address identifying the tree network, the intermediate bit string of the source address if there is no intermediate bit string of the source address of the packet in one or the corresponding drop address table Is written to the table, and if there is an intermediate bit string of the source address of the packet, the packet is sent to the ring output of the node as it is, circulated on the ring, and the packet circulated on the ring is input to the node. In this case, if there is an intermediate bit string of the destination address of the packet in the drop address table corresponding to one or the input ring, DROP is performed at that node, and if there is not, the packet is passed as it is, and at the ADD node or the multi-round bit grant node. Pake to forward If the node connected to the upper ring determines that there is no destination even if it makes one round on the ring by setting a multi-round bit in the multi-round bit area of the host, it goes up to the upper ring at that node, The multi-round bit of the packet is dropped,
Even if the through-bit is not set in the highest ring, the packet with no destination is converted to a copy packet, copied at each node of the ring, dropped, and the rounded packet is discarded. When a packet with a packet rises to the mesh network ring above the highest ring, the through bit is erased, and it circulates on the ring. DROP at the local destination node of the ring for the ring, circulate around the top ring of the DROP, convert to a copy packet if there is no destination, copy at each node, and discard the packet that circulates once. The copy packet that goes around the network ring is discarded.
A packet transfer method in a double ring network that operates with a MAC operation type 1 flow. Applied to a mesh ring network in which a large number of ring networks that transfer packets with source and destination addresses are connected in a plane,
Each node on the ring has either a single drop address table with a drop address written or a drop address table with the same drop address written for the ring transmission line, or one more or a ring transmission line for steering. Or, it is a configuration having an ADD address table in which a source address or a destination address corresponding to the selected ring transmission path is automatically set when the shortest path is set,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
Each router, server, edge node, MAC, IP converter accommodated in this network periodically raises a one-way configuration packet with a destination address of all 0 and only a source address to the ring edge, and drops the address. The source address is written to the table,
Between adjacent rings, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and when the packet of that transmission path goes up to the ring of the ADD destination Or, when a packet from other than the adjacent transmission path goes up the ring, the node recognizes the initial setting packet, the calling packet, or the path setting packet, and sets the address of the drop address table as the initial setting packet or the calling In a configuration that uses packets or routing packets, the initialization packet, call packet, or routing packet records the source address of the packet in one or both drop address tables, and the source address or destination address of the packet. Corresponds to the lower specific bit Sent to ring transmission line,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If there is no destination, there is no destination, and if the circulated packet returns to the ADD node, the multi-circulation bit is set in the multi-circulation bit area of the packet transferred by the ADD node, and further converted into a copy packet. Each ring connected to the horizontal ring is copied to a transmission line having two paths, and then moved to the horizontal ring. At that time, the multi-round bit and copy bit of the packet are dropped and go up to the ring and go around the original ring. Discard copy packets,
A packet transfer method in a double ring network in which a MAC operation type path operation or a MAC operation type 1 flow operation is performed. It is applied to a ring network that connects many ring networks that forward packets with source and destination addresses in a skewered manner,
Each node on the ring has only one drop address table in which only the drop address is written, or only one drop address table in which the same drop address is written in correspondence with the ring transmission path, or one more or steering in correspondence with the ring transmission path. In addition to the ADD address table in which the source address or destination address corresponding to the selected ring transmission path is automatically set when setting the shortest path or the shortest path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
A router, server, edge node, MAC, or IP converter accommodated in this network raises a one-way setting packet having only its own source address once or periodically to the ring, and a drop address table at the entrance of the ring The source address is written to
Between adjacent rings, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and when the packet of that transmission path goes up to the ring of the ADD destination Or, when a packet from other than the adjacent transmission path goes up the ring, the node recognizes the initial setting packet, the calling packet, or the path setting packet, and sets the address of the drop address table as the initial setting packet or the calling In a configuration that uses packets or routing packets, the initialization packet, call packet, or routing packet records the source address of the packet in one or both drop address tables, and the source address or destination address of the packet. Corresponds to the lower specific bit Sent to ring transmission line,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If there is no destination, there is no destination, and if the circulated packet returns to the ADD node, a multi-round bit is set in the multi-round bit area of the packet to be transferred by the ADD node, and further converted into a copy packet for copying. The packet is copied to the adjacent ring for each connection ring that moves to the adjacent ring, and then moved to the adjacent ring. At that time, the multi-round bit and copy bit of the packet are dropped and moved to the ring, and there is no destination in the adjacent ring. For example, in addition to a multi-round packet, a copy packet is copied to each adjacent ring that is transferred to the adjacent ring, transferred to the adjacent ring, and the copy packet that has made one round in each ring is discarded.
A packet transfer method in a double ring network in which a MAC operation type path operation or a MAC operation type 1 flow operation is performed. It is applied to a ring network that connects many ring networks that forward packets with source and destination addresses in a skewered manner,
Each node on the ring has only one drop address table in which only the drop address is written, or only one drop address table in which the same drop address is written in correspondence with the ring transmission path, or one more or steering in correspondence with the ring transmission path. In addition to the ADD address table in which the source address or destination address corresponding to the selected ring transmission path is automatically set when setting the shortest path or the shortest path,
When a transmission line failure or a node failure occurs, a double ring network consisting of a 0 system and a 1 system in which a transmission line loopback is performed at nodes on both sides of the failure point or a transmission line loopback is performed at nodes on both sides of the failure node ,
The edge node device or distribution service company or distribution service device or broadcasting station accommodated in this network raises one-way setting copy packet having only its source address once or periodically to the ring, and drops the ring entrance The source address is written in the address table, and the one-path setting copy packet that has reached the ring is not copied by the node that has reached the ring, but is copied to each node on the ring and transferred to the adjacent ring. Copy at node and move to adjacent ring, copy to subordinate at each node on that ring, copy at node moving to adjacent ring and move to adjacent ring It is a configuration to discard,
Between adjacent rings, there is a transmission path through which a packet dropped from the clockwise ring and a packet dropped from the counterclockwise ring are transmitted, and when the packet of that transmission path goes up to the ring of the ADD destination Or, when a packet from other than the adjacent transmission path goes up the ring, the node recognizes the initial setting packet, the calling packet, or the path setting packet, and sets the address of the drop address table as the initial setting packet or the calling In a configuration that uses packets or routing packets, the initialization packet, call packet, or routing packet records the source address of the packet in one or both drop address tables, and the source address or destination address of the packet. Corresponds to the lower specific bit Sent to ring transmission line,
For normal packets other than outgoing calls, there is one or an ADD address table corresponding to the ring transmission path, and the selected ring transmission path is written corresponding to the source address or destination address, or the selected ring transmission path is supported. If the source address or the destination address is written in the packet, the ring transmission path name is written in the ADD destination ring transmission path selection bit area of the packet and sent to the ring transmission path. If there is no packet, it is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, while the ADD destination ring corresponding to the source address of the packet is stored in the drop address table corresponding to one or the ring transmission path If the transmission path is written, Writing ring transmission path name ADD info ring transmission path selecting bit region of the packet, and sends to the ring transmission path,
On the other hand, in a node configuration in which a node cannot identify an initial setting packet, a calling packet, a route setting packet, and a drop address table setting packet, all the packets to be ADD have one or an ADD address table corresponding to a ring transmission path. If the selected ring transmission path is written corresponding to the source address or destination address, or if the source address or destination address is written corresponding to the selected ring transmission path, the name of the ring transmission path is used as it is. Write to the ADD destination ring transmission path selection bit area of the packet, send it to the ring transmission path, and if there is no table, or if there is no such table, search the drop address table corresponding to one or ring transmission path And there, a packet If there is no address corresponding to the source address, the source address is written in the drop address table corresponding to one or both ring transmission lines, and in that case, the selected ring transmission line is not written. In this case, the packet is sent to the ring transmission path indicated by the lower specific bit of the source address or destination address of the packet, and if the ADD destination ring transmission path name corresponding to the source address of the packet is written in the drop address table, the ring Write the transmission path name in the ADD destination ring transmission path selection bit area of the packet and send it to the ring transmission path.
The packet to be transferred on the ring is the address of one drop address table in which only the drop address is written or the address in the drop address table in which only the drop address corresponding to the ring input to the node of the packet is written. If it matches the address, DROP
If there is no destination, there is no destination, and if the circulated packet returns to the ADD node, a multi-round bit is set in the multi-round bit area of the packet to be transferred by the ADD node, and further converted into a copy packet for copying. The packet is copied to the adjacent ring for each connection ring that moves to the adjacent ring, and then moved to the adjacent ring. At that time, the multi-round bit and copy bit of the packet are dropped and moved to the ring, and there is no destination in the adjacent ring. For example, in addition to a multi-round packet, a copy packet is copied to each adjacent ring that is transferred to the adjacent ring, transferred to the adjacent ring, and the copy packet that has made one round in each ring is discarded.
A packet transfer method in a double ring network in which a MAC operation type path operation or a MAC operation type 1 flow operation is performed.   The MAC operation type path operation packet is a packet whose MAC address is the MAC address of the MAC in MAC packet in which the MAC header is added before the IP over MAC packet, or the IP address of the IP over MAC is a private IP address. A packet that is a global IP address having a private IP address of an IP over MAC packet that uses an address in its option area, or a packet that is a MAC address of a packet whose MAC destination address of the IP over MAC is a common address, or a path MAC A packet whose operating address is two VPI addresses of a double cell header of an ATM cell having a double cell header, or an address where a path MAC operates is a cell. A packet that is two VPI addresses of a cell header of an ATM cell having another VPI before a packet, or an address that operates a path MAC is a MAC address of a path ATM cell over MAC packet. The packet transfer method according to 1 to 17 and 19, 20, 21.   The MAC operation type 1-flow operation packet is a packet in which the address for 1-flow MAC operation is the MAC address of the IP over MAC packet, or the MAC destination address of the IP over MAC is the address for 1-flow MAC operation is the common address Yes, a packet that is a MAC of a packet whose MAC source address is a single address, a packet that is an MAC of an ARP packet, an address that operates 1 flow MAC, or an IP address of an IP over MAC packet that is an address that operates 1 flow MAC Or a packet in which the address that operates 1 flow MAC is the IP address of the IP packet, or the address that operates in 1 flow MAC is the MAC of the ATM cell over MAC packet 15. A packet that is an address or an address at which one flow MAC operates is an address of two VPI + VCI or two VCIs of a double cell header of an ATM cell having a double cell header. And the packet transfer method according to 16 to 21.   In the MAC operation type 1-flow operation packet, in the lower network, the address for 1-flow MAC operation is the MAC address of the IP over MAC packet, and in the upper-layer network, the address for 1-flow MAC operation is the IP address of the IP over MAC packet. In a packet or a lower network, an address that operates 1 flow MAC is a MAC address of an IP over MAC packet, and in an upper network, an address that operates 1 flow MAC is a packet that is an IP address of an IP packet. The packet transfer method according to claim 5 to 14 and 16,17.   A device that converts a MAC operation type 1-flow operation IP over MAC packet using a private IP address into a MAC operation type path operation IP over MAC packet that uses a global IP address having a private IP address in its optional area is A MAC operation type 1 flow in an IP over MAC of a packet that operates in a MAC operation type path, which is applied to the packet transfer method according to claim 5, wherein the IP address does not have a MAC address. A double ring network using a packet which is a global IP address having a private IP address used in an operating IP over MAC packet in its option area.   A device that converts a MAC operation type 1-flow operation IP over MAC packet using a private IP address into a MAC operation type path operation IP over MAC packet that uses a global IP address having a private IP address in its optional area is 18. A MAC operation type 1 flow operation in which the IP address is an MAC over IP of a packet that performs a MAC operation type path operation, which is applied to the packet transfer method according to claim 5 to 14, and 16 and 17, characterized by having a MAC address. A double ring network using a packet which is a global IP address having a private IP address used in an IP over MAC packet as an option area.   27. The double ring network according to claim 26, wherein the dual ring network has an ARP signal transmission function, an ARP response signal reception function, and an RARP signal reception function.   The double ring network according to claim 25, having a RARP signal reception function.   The MAC / IP converter that has received the RARP signal from the terminal returns a private IP address corresponding to the MAC address of the terminal, which is the corresponding MAC address of the request IP address, as the request IP address included in the received RARP signal. The double ring network according to claim 27 and 28.   The IP packet connected to the existing network is changed to a packet with an IP header added to the packet with the destination address of the packet as the destination address and the source address as the existing network connection port address of the lowest ring. The packet transfer method according to claim 1, 2, 5-14, 16, 17, 19, 20, 21.   31. The packet transfer method according to claim 30, wherein when a destination terminal belongs to the own network among packets sent to the existing network, the response packet is sent to the own network.   The response packet of the packet sent to the existing network is sent to the existing network connection port of the lowest ring, where the packet from which the additional header is removed is sent to the local network, and then communicated through the existing network connection port. The packet transfer method according to claim 30, wherein:   Every lowest ring network has an edge node with its own source address, and the edge node has a function to periodically send a route setup packet including the source address to the highest ring. For each source address of the terminal, there is a header having the source address of the edge node included in the destination terminal, the source address of the source terminal as the source address, and the source address of the edge node included in the destination terminal as the destination address. The edge node receiving the packet includes the source address of the connection destination terminal included in the option area instead of the destination address of the packet. Copy packets to be used as Nation addresses A terminal-to-terminal connection method comprising: a step of converting the packet into all terminals under control and setting a reverse path by a response from the receiving terminal whose destination address of the copy packet is the source address of the terminal The packet transfer method according to any one of claims 1, 2, 5-14, 16, 17, 19, 20, and 21.   Every lowest ring network has an edge node with its own source address, and the edge node has a function to periodically send a route setup packet including the source address to the highest ring. For each source address of the terminal, there is a header having the source address of the edge node included in the destination terminal, the source address of the source terminal as the source address, and the source address of the edge node included in the destination terminal as the destination address. The edge node that received the packet including the source address of the connected terminal in the option area and received the packet uses the source address as the source address of the edge node, and includes the destination address in the option area of the received packet. Source address of the connected terminal When a response packet is received from a receiving terminal in which the destination address of the copy packet is the source address of the terminal, the packet having the header is converted to a copy packet and distributed to all the subordinate terminals. A terminal-to-terminal connection method comprising a step of sending a packet converted to a source address of the received calling terminal to the calling terminal and setting a reverse path. The packet transfer method according to any one of 17, 19, 20, and 21.   Every lowest ring network has an edge node with its own source address, and the edge node has a function to periodically send a route setup packet including the source address to the highest ring. For each source address of the terminal, there is a header having the source address of the edge node included in the destination terminal, the source address of the source terminal as the source address, and the source address of the edge node included in the destination terminal as the destination address. The edge node that sends the packet that contains the source address of the destination terminal in the option area and the mail data in the payload, receives the packet, uses the source address as the source address of the edge node, and the destination address as the destination address. Included in the option area of received packets A packet that does not contain mail data with a header as the source address of the destination terminal to be converted is converted to a copy packet and distributed to all the subordinate terminals. From the receiving terminal whose destination address is the source address of the terminal When a response packet is received, the inter-terminal mail transfer, wherein a packet in which a destination address of a packet including mail data received from the calling terminal is converted to a source address of a packet received from the receiving terminal is sent to the receiving terminal. The packet transfer method according to any one of claims 1, 2, 5-14, 16, 17, 19, 20, and 21 having a method.   The source address of the edge node included in the destination terminal for each source address of the connection destination terminal is obtained by adding an edge node specific address to the area number of the fixed telephone number owned by the owner of the destination terminal. 36. The packet transfer method according to any one of claims 33, 34, and 35.   The multi-round bit grant method in the ADD node has a configuration to be added to the corresponding ADD destination 0 system or 1 system ring transmission line with the lower specific bit of the source address or destination address of the packet to be ADDed in the ADD node of the packet, When a packet that circulates on the ring is input to the ADD node, the packet is transmitted when the 0 system 1 system of the ring matches 0 or 1 of the lower specific bit of the input source address or destination address of the packet. 37. The method according to any one of claims 1 to 24 and 30 to 36, wherein a multi-round bit is added to the packet when the source address of the packet is in a drop address table corresponding to the ring transmission path. The described packet forwarding method.   The multi-round bit assignment method in the ADD node is such that when a packet has an ADD destination transmission path identification bit and a packet that circulates on the ring is input to the ADD node, the ADD destination transmission path identification bit of the input packet is 30. The method according to any one of claims 25 to 29, wherein when there is a match with the 0 system 1 system and the source address of the packet is in the drop address table, a multi-round bit is added to the packet. A double ring network according to claim 1.   A multi-round bit granting node attaches a multi-round bit to a packet that has a low-order specific bit of a source address corresponding to the ring, a low-order specific bit of a destination address, or an ADD destination ring transmission path selection bit corresponding to the ring. Only, a function of giving multi-round bits, a function of giving multi-round bits for discarding to other packets, a packet of multi-round bits of 2 or 11 bits in total, and a multi-round bit for discard of 2 or 11 bits in total 30. The double ring network according to claim 25, wherein the double ring network has a function of discarding the network.   The drop address table has active and spare, the source address of the ADD packet to the ring is written to the drop address table on the active side, and the packet that circulates on the ring is stored in the node's current drop address table. If there is an address, drop if there is, drop if there is not, search the spare drop address table, if there is, drop it, if not, pass the packet to the ring output, and drop the spare for a certain time or more If there is no hit in the address table search, clear all the memory in the spare drop address table, make the spare drop address table the current one, and make the current drop address table the spare. Claims 1, 2, 5-1 Drop address table used in the packet transmission method according to any one of 16,17,19,20,21. A drop address table having a working and a spare is a node in which a normal packet to be ADDed to a node is written in the table if the source address is not in the drop address table on the working side, and is periodically sent from a server, a router, or an edge node. If the source address is not written in either one or both of the working and spare drop address tables, write to the unwritten table,
On the other hand, the packet input to the node from the ring is searched for the destination address or source address first by searching the current drop address table. If the spare drop address table does not hit the search for packets input from the ring for a certain time longer than the period of the one-path packet sent to the network, the spare drop address table memory is cleared and the spare The drop address table is used as the current one, and the drop address table that has been used until then is reserved.
30. A drop address table in a double ring network according to any one of claims 24 to 29.   30. The double ring network according to claim 24, wherein the address setting in the ADD address table is automatically set for steering at the time of loopback.   The packet to which the multi-round bit is added moves to the upper ring or the adjacent ring, and therefore when the packet is dropped from its own ring, the destination address of the packet is left in the drop address table at the exit. Item 30. The double ring network according to any one of items 24 to 29.   A packet with multi-round bits is moved to the upper ring or adjacent ring, leaving the source address in the drop address table at the entrance of the ring, then removing the multi-round bits and going up to the corresponding ring A double ring network according to any one of claims 24 to 29.   When a packet with a multi-round bit and an initialization packet or a call packet and a route setup packet and a single route setup packet or only a call packet goes up the ring, the drop address table is looked at. The normal packet and the unknown packet 30. The double ring network according to any one of claims 24 to 29, wherein the drop address table is not viewed except in a drop address table that rises to the lowest ring.   The copy bit of the copy packet used in the network is the seventh bit from the beginning of the MAC destination address of the packet having the MAC header or the seventh bit from the beginning of the MAC source address of the packet having the MAC header. 30. A packet configuration transferred in a double ring network according to any one of claims 24 to 29.   The MAC packet used in the network is the seventh bit from the beginning of the MAC source address and the MAC destination address, the IP data display bit of the type field, the ARP display bit, the RARP display bit, and the 1 bit of 0X8100 which is the VLAN identifier As the control bits for this network, the first bit of the type field or VLAN identifier area, ie, the bits other than, ie, the second, third, fourth, sixth, seventh, ninth and tenth bits from the first bit after the MAC source address 30. The packet transfer method in a double ring network according to any one of claims 24 to 29, wherein the packet transfer method is used.   The MAC packet used in the network is a type field excluding the seventh bit from the head of the MAC source address and the MAC destination address, the IP data display bit of the type field, and the 1 bit of 0X8100 which is the VLAN identifier. Alternatively, the first 15 bits of the VLAN identifier area, that is, the second, third, fourth, sixth, seventh, ninth, tenth, eleventh, twelve, thirteenth, fourteenth, fifteenth and sixteenth bits from the first bit after the MAC source address are added to this network. 30. The packet transfer method in a double ring network according to claim 24, wherein the packet transfer method is used as a control bit in a double ring network.   The OAM MAC packet is defined by one bit of the type field and the empty bit of the VLAN identifier, an OAM field is created after 16 bits of the type field, and a control signal including a CRC is sent there. 30. The control signal according to any one of claims 24 to 29, wherein all bits of an area corresponding to an OAM field of a packet are copied and extracted, and then CRC calculation is performed, and the error signal is used only as a control signal. A packet transfer method in the double ring network described in 1.   The MAC packet used in the network is the case where the seventh bit from the beginning of the MAC source address and the MAC destination address is included in the MAC address of the MAC packet including the phone number of the mobile phone terminal and the phone number of the fixed phone The packet transfer method in a double ring network according to any one of claims 24 to 29, wherein the packet transfer method is used for discrimination from a MAC packet in an existing network.   When converting the phone number of the mobile phone terminal and the phone number of the fixed phone to the MAC address of the MAC packet, use a method of converting 0 to 9 of the decimal number of the phone number into a 4-bit binary bit string. 51. A packet transfer method in a double ring network according to claim 50. In a node device used for a single or double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case it has a single drop address table with the source address of the input cell or packet or packet with cell header,
A cell or packet or packet with a cell header that ADDs to the ring of a node is included in the packet header or packet header of the call or routing cell payload in the node drop address table or the packet with the calling or routing cell header If there is no address, write the port and its source address if there are multiple ports leaving the ring, and if there is only one port leaving the ring, write only the source address to the table before making a call or Source address or destination address included in packet header or packet header of packet or packet header of packet or packet header of outgoing call or routing cell header with routed cell If there is a source address of the cell or packet or packet with cell header, the source address or destination address of the cell or packet or packet with cell header is left as it is. Send to the ring transmission path indicated by the bit of the lower specific position, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or cell header packet,
A cell or packet with a cell header or a packet with a cell header transferred on a ring entered to a node will be sent from the ring if the address in the drop address table in which only the drop address is written matches the destination address of the cell or packet or packet with a cell header. When there are multiple outgoing ports, the port written with the address is simply DROP if there is only one port coming out of the ring, and the others are passed through.
A node device that transfers a cell or packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node equipment has the bit length of the source address area or specific source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. If it is short, one drop address memory in which 1 is written at the addressing position of the source address area or specific source address area, or 1 is written corresponding to the source address or specific source address area source address. Have
A cell or packet or cell header packet that ADDs to the ring of the node is included in the cell header or packet header of the call or routing cell or the packet header with a cell header or the header of a single packet with respect to the drop address memory of the node If the bit length of the source address area or specific source address area required for transfer in this ring is short, the write data will be written to that source address area or specific source address area addressing position in the memory. Otherwise, if there is only one port out of the ring, simply write 1 to the source address area or specific source address area addressing location of the drop address memory, or the source address Alternatively, after writing a specific source address area and a corresponding 1 or when there is write data in the source address area or the specific source address area addressing position necessary for transfer in this ring of the memory The source address contained in the cell header or packet header of a call or routing cell header or payload or packet with a cell header or the header of a single packet, or the destination address contained in a packet or packet header with a cell header or packet header. Send to the ring transmission path indicated by the bit of the lower specific position, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or cell header packet,
The cell or packet transferred on the ring that is input to the node or the packet with the cell header has a short bit length of the destination address or a specific destination address area required for transfer on this ring in the destination address. In this case, the specified address where the data of the drop address memory in which the drop address is written is written or the address where the data is written is the destination address of the cell or packet or packet with cell header in this ring. If it matches the specific destination address area address or destination address required for the transfer of that cell, the cell or packet or packet with a cell header is DROP, otherwise it is slewed ,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device has a long bit length of the source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. Divide the source address of the source address area into an upper source address or upper specific source address and a lower source address or lower specific source address,
The lower source address or lower specific source address is written in the address position specified by the upper source address or upper specific source address, or the address position specified by the lower source address or lower specific source address, respectively. If there is one drop address memory in which the upper source address or upper specific source address is written and the write data is in the same address position of the memory, and the data is different from the data to be written, the source address to be written is dropped. With that one drop address table written in the address table,
A cell or packet or cell header packet that ADDs to the ring of a node, for the drop address memory and drop address table of the node, the cell header or packet header of the call or routing cell header or payload or cell header packet or a single packet If the bit length of the source address area or specific source address area required for transfer in this ring is long among the source addresses included in the header, the upper source address or upper specific source address or lower source address or lower specific source If there is no write data at the addressed location of that memory in the address, if there is only one port exiting from the ring, then the drop address memory will simply have the software required for transfer on this ring. When the bit length of the source address area is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the address specified by the upper source address or upper specific source address Write the lower source address or lower specific source address to the location, respectively, or write the upper source address or upper specific source address to the address location specified by the lower source address or lower specific source address, respectively, or When there is write data at the memory addressing position specified by the upper source address or the upper specific source address and the data is not the lower source address or the lower specific source address, respectively, If there is write data at the address specified position of the lower source address or lower specific source address and the data is not the upper source address or upper specific source address, the source address or specific After writing the source address, on the other hand, there is write data at the memory addressing position specified by the upper source address or upper specific source address, and the data is the lower source address or lower specific source address, respectively. If there is a write data at the addressing position of the lower source address or the lower specific source address and the data is the upper source address or the upper specific source address, respectively, or Source address or specific source address in the drop address table, the source address included in the cell header or packet header of a call or routing cell header or payload or packet with a cell header or the header of a single packet or Send to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the cell or packet with cell header or packet header, or indicate the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header Sent to the ring transmission line,
The cell or packet or cell header packet transferred on the ring that is input to the node is the destination address area of the destination address area required for transfer on this ring, or the upper specific destination address. If the data written at the specified address location matches the lower destination address or lower specific destination address, or the address specified by the lower destination address or lower specific destination address If the data being written to the location matches the upper destination address or the upper specific destination address, respectively, or the destination When the down address or a particular destination address is in the drop address table, the packet with the cell or packet or cell header, and DROP, otherwise slew,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device has a long bit length of the source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. The source address in the source address area is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and an address location specified by the upper source address or upper specific source address or a subsequent address location The upper source address or the upper specific source address and the lower source address or the lower specific source address corresponding to the upper source address or the upper specific source address, or the address position specified by the lower source address or the lower specific source address or The subsequent address positions, the lower source address or a lower specific source address and, in correspondence with each writing level source address or higher specific source address, has one drop address memory,
A cell or packet or cell header packet that ADDs to the ring of the node is included in the cell header or packet header of the call or routing cell or packet header with the cell header or packet header or single packet header for the node drop address memory If the bit length of the source address area or specific source address area required for transfer in this ring is long among the source addresses, the memory of the upper source address or upper specific source address or lower source address or lower specific source address If there is no write data that matches the address location within the specified address range and the address location within the specified range thereafter, if there is only one port exiting the ring, this link address is simply stored in the drop address memory. When the bit length of the source address area required for transfer is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the upper source address or upper specific source Write the lower source address or the lower specific source address corresponding to the upper source address or the upper specific source address and the lower source address or the lower source address at the address position specified by the address or within the specified address range after that. The lower source address or lower specific source address and the upper source address or upper specific corresponding to the address position specified by the address or lower specific source address or within the specific range after that, respectively. After writing the source address, there is write data at the addressed location in the memory specified by the upper source address or upper specific source address or an address within the specified range thereafter, and the data is the upper source address. Or the upper specific source address and the corresponding lower memory address or lower specific source address, or the memory specified by the lower source address, the lower specific source address, or an address within a specific range thereafter If there is write data at the address specified position and the data is the lower source address or the lower specific source address and the upper source address or the upper specific source address corresponding to the lower source address or the lower specific source address, respectively, Is the source address contained in the cell header or packet header of a routing cell header or payload or packet with a cell header or the header of a single packet or the bit at a lower specific position of the destination address contained in a packet or packet header with a cell header or packet Sent to the indicated ring transmission path, or sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header,
The cell or packet or cell header packet transferred on the ring that is input to the node is the destination address area of the destination address area required for transfer on this ring, or the upper specific destination address. The data written at the specified address location or the address location within the specified range thereafter is the upper destination address or the upper specified destination address and the lower destination address or lower specified destination corresponding to each. If it matches the destination address, or a specific range after the address location specified by the lower destination address or lower specific destination address If the data written in the address position in the file matches the lower destination address or the lower specific destination address and the corresponding upper destination address or upper specific destination address, respectively, Cell or packet or packet with cell header is DROP, otherwise it is passed,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a gated ring node device used for a double ring network,
When the source address for the gate required for the transfer in the ring for the gate and the ring for the destination gate included in the payload of the cell to be added or the packet header of the packet or the packet header of the packet with the cell header is long, the node device 0-system upper address with 1 source bit added as a low-order additional bit of the source address, 1-system high-order address with 1-bit added 1 as a low-order additional bit of the upper source address, and lower source It is divided into 0 system lower address with 1 bit being 0 as the lower additional bit of the address, or 1 system lower address with 1 bit being 1 as the lower additional bit of the lower source address,
The 0 system upper source address or the 1 system upper source address and the 0 system lower source address corresponding to the address position specified by the 0 system upper source address or the 1 system upper source address or the address position after that, The 1-system lower source address is written as data, or the address position specified by the 0-system lower source address or the 1-system lower source address or the address position after that, the 0-system lower source address or the 1-system lower source address, and Corresponding to each, it has one gate drop address memory to be written, using 0 system upper source address or 1 system upper source address as data,
Cells or packets with cell headers to be dropped on this ring received from other rings, or packets or cells with cell headers to be dropped on this ring from this ring's ADD transmission line are gated on the ring. When there is no source address destination, the call control circuit of this ring is reached, and the call control circuit determines the packet or cell header packet from the source address and gate source address of the received packet or cell header packet. After confirming that there is a gate source address for the cell or packet or packet with cell header in the gate drop address memory of the node ADDed from the originating terminal side to the gated ring, if there is, cell or packet or cell header attached When a packet is ADDed to the gated ring on the calling terminal side, call control is performed using the lower address as data at the address position of the upper address opposite to the upper source address used when writing to the drop address memory for the gate of that node. When the circuit writes to the gate drop address memory for the node containing the destination terminal to which the cell or packet or packet with cell header is to be dropped, or adds to the gated ring on the originating terminal side, the gate of that node The drop address memory contains the upper address at the address position of the lower address opposite to the lower source address used when writing, and the call control circuit contains the destination terminal to which the cell or packet or packet with cell header should be dropped. Gate drawer for the current node Written to flop address memory, one per node, has its gate for dropping address memory ADD terminal is shared with the gate drop address memory used for writing to the node,
A cell or packet with a node ring or a packet with a cell header is added to the node's gate drop address memory for the gate contained in the packet header of the call or routing cell payload or the packet with a cell header or the header of a single packet 0-system upper address with 1 source bit added as a low-order additional bit of the source address, 1-system high-order address with 1-bit added 1 as a low-order additional bit of the upper source address, and lower source It is divided into 0 system lower address with 1 bit being 0 as the lower additional bit of the address, or 1 system lower address with 1 bit being 1 as the lower additional bit of the lower source address,
When the source terminal reads the memory with a high-order source address of the 0 system or 1 system determined to be used for writing to the gate drop address memory of the node of the gated ring to be ADDed, the address If there is no 0-system or 1-system upper source address and lower-system address data corresponding to the 0-system or 1-system corresponding to the specified position and the address position within the specified range thereafter, the address-designated position and the subsequent addresses A gated ring in which the above-mentioned 0-system or 1-system upper source address and the corresponding 0-system or 1-system lower source address are written as data at an address position within a specific range, or the calling terminal side ADDs Used to write to the gate drop address memory of the node When the memory is read with the lower-system source address of the 0-system or 1-system, the lower-system source address of the 0-system or 1-system that matches the address designation position and the address position within the specified range thereafter, and If there is no corresponding 0-system or 1-system upper source address data, the 0-system or 1-system lower source address and the corresponding 0-system or 1 are assigned to the address designation position and the address position within a specific range thereafter. After writing the upper source address of the system as data, the originating terminal side is determined to be used for writing to the gate drop address memory of the node of the gated ring to be ADDed. If the memory is read with the upper source address of, the addressing location and beyond If there is a 0-system or 1-system upper source address that matches an address position within a specific range and a corresponding 0-system or 1-system lower source address data, either the source terminal side of the gated ring that is ADDed or is added. When the memory is read with the lower source address of the 0 system or 1 system which is determined to be used for writing to the drop address memory for the gate of the node, the address designation position and within a specific range thereafter If there is a 0-system or 1-system lower source address that matches the address position and a corresponding 0-system or 1-system upper source address data, the cell or packet or a packet with a cell header is sent to the corresponding ring transmission line as it is. And
The cell or packet transferred on the ring input to the node or the packet with the cell header is used for reading the gate drop address memory of the node of the gated ring to be dropped at the destination terminal with respect to the gate drop address memory of the node. When the memory is read with the higher-level source address of the 1 system or 0 system that is the reverse of that of the calling terminal determined by the above, the 1 system that matches the address specified position and the address position within the specified range thereafter Alternatively, if there is a 0-system upper source address and corresponding 1-system or 0-system lower source address data, or the destination terminal reads the gate drop address memory of the node of the gated ring to be dropped Lower-order source system of 1 system or 0 system opposite to the determined calling terminal side 1-system or 0-system lower source address and the corresponding 1-system or 0-system upper source address data corresponding to the address specified position and the address position within the specified range thereafter If there is, the cell or packet or packet with cell header is DROP, otherwise it is passed through,
A gate-type ring node device for transferring a cell or packet or a cell header packet with a MAC operation type 1 flow operation. In a gated ring node device used for a double ring network,
When the source address for the gate required for the transfer in the ring for the gate and the ring for the destination gate included in the payload of the cell to be added or the packet header of the packet or the packet header of the packet with the cell header is long, the node device The source address should be divided into an upper source address and a lower source address, and the upper source address and the lower source address corresponding to it should be written as data at the address location specified by the upper source address or a subsequent address location, or In the address position specified by the lower source address or the address position after that, the lower source address and correspondingly, the upper source address to be written as data corresponding to the lower source address, has one auxiliary drop address memory for the gate,
Cells or packets with cell headers to be dropped on this ring received from other rings, or packets or cells with cell headers to be dropped on this ring from this ring's ADD transmission line are gated on the ring. When there is no source address destination, the call control circuit of this ring is reached, and the call control circuit determines the packet or cell header packet from the source address and gate source address of the received packet or cell header packet. After confirming that there is a gate source address of the cell or packet or packet with cell header in the gate auxiliary drop address memory of the node ADDed from the source terminal to the gated ring, if so, the source address is set to the upper source address. And the lower source address, the call control circuit uses the upper source address and the lower source address corresponding to the address location specified by the upper source address or the address location specified as the data as the data. Or the packet or the packet with cell header is written in the gate drop address memory for the node containing the destination terminal to be dropped, or the lower source address and the address location specified by the lower source address or the address location after that Correspondingly, the upper source address is written as data in the gate drop address memory for the node in which the destination terminal to which the cell or packet or packet with cell header is to be dropped is stored. One The gate drop address memory has apart ADD terminal to that the node is the gate auxiliary drop address memory used for writing,
Cell or packet or packet with cell header to be ADDed to the ring of the node is divided into upper source address and lower source address for the cell or packet or cell header packet for the auxiliary drop address memory for the gate of the node. If the corresponding upper source address and lower source address corresponding to the address location specified by the source address or the subsequent address location are not written as data, the address location or the subsequent address location is written. The upper source address and the lower source address corresponding to the upper source address are written as data, or match the address position specified by the lower source address or the address position after that, If the high-order source address and the corresponding high-order source address are not written as data, the low-order source address and the high-order source address are written as data at the address position or the address position after that. On the other hand, if the upper source address and the lower source address corresponding to the address location specified by the upper source address or the subsequent address location are written as data, the same as that, If a matching lower source address and corresponding higher source address are written as data at the address location specified by the lower source address or the subsequent address location, the cell, packet, or cell is directly received. Sends a da packet with the corresponding ring transmission path,
The cell or packet transferred on the ring input to the node or the packet with the cell header matches the address position specified by the upper source address or the address position after that in the node's gate drop address memory. If the source address and the lower source address corresponding to it are written as data, the lower source address that corresponds to the address location specified by the lower source address or the address location after that, and corresponding to it If the upper source address is written as data, the cell or packet or the packet with the cell header is dropped at the node, and the others are passed through.
A gate-type ring node device for transferring a cell or packet or a cell header packet with a MAC operation type 1 flow operation. In a gated ring node device used for a double ring network,
When the source address for the gate required for the transfer in the ring for the gate and the ring for the destination gate included in the payload of the cell to be added or the packet header of the packet or the packet header of the packet with the cell header is long, the node device The source address is divided into an upper source address and a lower source address, and the lower source address should be written as data at the address location specified by the upper source address, or the upper source address is set at the address location specified by the lower source address. It has one auxiliary drop address memory for the gate to be written as data,
Cells or packets with cell headers to be dropped on this ring received from other rings, or packets or cells with cell headers to be dropped on this ring from this ring's ADD transmission line are gated on the ring. When there is no source address destination, the call control circuit of this ring is reached, and the call control circuit determines the packet or cell header packet from the source address and gate source address of the received packet or cell header packet. After confirming that there is a gate source address of the cell or packet or packet with cell header in the gate auxiliary drop address memory of the node ADDed from the source terminal to the gated ring, if so, the source address is set to the upper source address. And the lower-level source address, the lower-level source address is used as data at the address location specified by the higher-level source address. The call control circuit should drop the cell or packet or packet with a cell header at the address location specified by the lower source address, writing the data to the gate drop address memory for the selected node as the upper source address A gate drop address memory for writing to the gate drop address memory for the node in which the destination terminal is accommodated has a gate drop address memory separate from the gate auxiliary drop address memory used for writing by the ADD terminal to the node,
Cell or packet or packet with cell header to be ADDed to the ring of the node is divided into upper source address and lower source address for the cell or packet or cell header packet for the auxiliary drop address memory for the gate of the node. If the lower source address that matches the address location specified by the source address is not written as data, the lower source address is written as data to the address location or specified by the lower source address. If the higher-order source address that matches the position to be written is not written as data, the higher-order source address is written to that address position as data, and then the address position specified by the higher-order source address. If the matching lower source address is written as data, the data is written as it is, and if the matching higher source address is written as data at the address position specified by the lower source address, The cell or packet or packet with cell header is sent to the corresponding ring transmission line as it is, and the cell or packet or packet with cell header transferred on the ring inputted to the node is higher than the drop address memory for the gate of the node. If a matching lower source address is written as data at the address location specified by the source address, or a matching higher source address is written as data at the address location specified by the lower source address. If so, Or packet or cell headers with packet is to DROP at the node, otherwise slew,
A gate-type ring node device for transferring a cell or packet or a cell header packet with a MAC operation type 1 flow operation. In a gated ring node device used for a double ring network,
When the source address for the gate required for the transfer in the gated ring and the destination gated ring included in the packet payload of the cell to be added or the packet header of the packet with the cell header or the destination gated ring is long, the node device 0-system upper address with 1 source bit added as a low-order additional bit of the source address, 1-system high-order address with 1-bit added 1 as a low-order additional bit of the upper source address, and lower source It is divided into 0-system lower address that adds 1 bit that is 0 as the lower additional bit of the address, or 1-system lower address that adds 1 bit that is 1 as the lower additional bit of the lower source address. The address specified by the address or the system 1 upper source address The 0-system lower source address or the 1-system lower source address should be written as data corresponding to each, or the address position specified by the 0-system lower source address or the 1-system lower source address, A cell or packet to be dropped in this ring received from another ring or a packet with a cell header or this ring, which has one gate drop address memory to which the 0 system upper source address or 1 system upper source address should be written as data A cell or packet to be dropped in this ring or a packet with a cell header that has risen from the ADD transmission path of this ring arrives at the call control circuit of this ring when there is no gate source address destination on the ring, and the call The control circuit From the source address of the packet or the packet with the cell header and the source address for the gate, and the cell or the packet or the cell header with the cell or the packet or the cell header is added to the gate drop address memory of the node added to the gated ring. After confirming whether there is a source address for the gate of the packet, if it exists, it is used when a cell or a packet with a cell header is written to the gate drop address memory of that node when ADDed to the gated ring on the originating terminal side A node in which a call control circuit accommodates a destination terminal to which a cell or a packet or a packet with a cell header is to be dropped is stored as a lower address at the address position of an upper address opposite to the upper source address. When writing to the gate drop address memory for the gate, or when ADDing to the gate ring on the originating terminal side, the address of the lower address opposite to the lower source address used for writing to the gate drop address memory of that node The upper address is written as data into the gate drop address memory for the node containing the destination terminal to which the cell or packet or packet with cell header is to be dropped. The ADD terminal has a gate drop address memory shared with the gate drop address memory used for writing,
A cell or packet with a node ring or a packet with a cell header is added to the node's gate drop address memory for the gate contained in the packet header of the call or routing cell payload or the packet with a cell header or the header of a single packet 0-system upper address with 1 source bit added as a low-order additional bit of the source address, 1-system high-order address with 1-bit added 1 as a low-order additional bit of the upper source address, and lower source It is divided into a 0-system lower address with 1 bit added as 0 as a lower additional bit of an address, or a 1-system lower address with 1 bit added as 1 as a lower additional bit of a lower source address. No of gate type ring to If the memory is read at the upper system address of system 0 or system 1, which is determined to be used for writing to the gate drop address memory, if there is no data at the addressed position, the address is specified. After writing the corresponding low-order source address of the 0-system or 1-system as data at the position, or the originating terminal side is used for writing to the gate drop address memory of the node of the gated ring to be ADDed If the memory is read at the determined 0-system or 1-system lower source address, and there is no data at the address designation position, the corresponding 0-system or 1-system upper source address is present at the address designation position. On the other hand, the calling terminal side is connected to the gate of the node of the gated ring to be ADDed. When the memory is read with the upper source address of the 0 or 1 system determined to be used for writing to the drop address memory, the corresponding 0 or 1 system lower source that matches the addressing position If the address data is present, it is used as it is, or the lower side source address of the 0 system or 1 system that the calling terminal side is determined to use for writing to the gate drop address memory of the node of the gated ring to be ADDed. If the corresponding 0-system or 1-system upper source address data matching the addressing position is read when the memory is read, the cell or the packet or the packet with the cell header is directly sent to the corresponding ring transmission line,
The cell or packet transferred on the ring input to the node or the packet with the cell header is used for reading the gate drop address memory of the node of the gated ring to be dropped at the destination terminal with respect to the gate drop address memory of the node. When the memory is read with the higher-level source address of the 1-system or 0-system that is the reverse of that of the calling terminal, the corresponding 1-system or 0-system lower source address data that matches the addressing position is If there is a lower-level source address of 1 system or 0 system that is opposite to the originating terminal side that is determined for reading the gate drop address memory of the node of the gated ring to be dropped on the destination terminal side When reading the memory, the corresponding 1 system or 0 system upper source that matches the addressing position If the address data, the packet with the cell or packet or cell header, and DROP, otherwise slew,
A gate-type ring node device for transferring a cell or packet or a cell header packet with a MAC operation type 1 flow operation.   58. The gated ring node apparatus according to claim 56 or 57, wherein the source address for gate is a MAC address of a conventional MAC terminal or each number from 0 to 9 in decimal notation of a mobile phone terminal number into a 4-bit binary number. A gated ring node device for transferring a cell or a packet or a packet with a cell header, characterized by being a converted bit string.   60. The gated ring node device according to claim 58 or 59, wherein the gate source address is a MAC address of a conventional MAC terminal or each digit of 0 to 9 in decimal notation of a mobile phone terminal number into a 4-bit binary number. A gated ring node device for transferring a cell or a packet or a packet with a cell header, which is a converted bit string. In a node device used for a double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case, it has two drop address tables in which the source address of the cell or packet entered or the packet with the cell header is written in both drop address tables corresponding to the ring,
A packet to be ADDed to the ring of a node has a source address included in the packet header of the packet with the call or routing cell header or the packet header of the call or routing cell header in the drop address table of one of the nodes. Otherwise, if there are multiple ports exiting the ring, write the port and its source address, and if there is only one port exiting the ring, write only the source address to the two drop address tables, and then The source address or the destination address contained in the packet or packet header of the packet or packet with the packet header or packet header of the packet with the payload of the call or routing cell or the packet with the calling or routing cell header If there is a source address of the cell or packet or packet with cell header, the source address or destination address of the cell or packet or packet with cell header is left as it is. Send to the ring transmission path indicated by the bit at the lower specific position, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or cell header packet, and transfer on the ring input to the node The cell, packet, or packet with cell header is the destination address of the cell, packet, or packet with cell header if the address of the drop address table corresponding to the input ring transmission path that wrote only the drop address is written. If they match, the port the port exiting from the ring has is written with the address if there are multiple, simply when the port exiting from the ring is one, and DROP, otherwise slew,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node equipment has the bit length of the source address area or specific source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. If it is short, the same write corresponding to the ring in which 1 is written at the addressing position of the source address area or specific source address area, or 1 is written corresponding to the source address or specific source address area source address. Has drop address memory with data,
A cell or packet or packet with a cell header that ADDs to the ring of a node, for the drop address memory of one of the nodes, the cell header or packet header of the call or routing cell or the packet with the cell header or the header of a single packet If the bit length of the source address area or specific source address area required for transfer in this ring is short, the address specified by the source address area or specific source address area of the memory If there is no write data, if there is only one port exiting the ring, simply write 1 to the source address area of both drop address memories or the addressing location of the specific source address area, or Write after writing the address area source address or its specific source address area address and corresponding 1 or at the source address area or specific source address area address required for transfer in this ring of the memory If there is data, it is included in the header of the calling or routing cell or the header of the packet with the header or the header of the packet with the cell header or the header of the packet with the header of the single packet or the header of the packet with the cell header or the header of the packet Sent to the ring transmission path indicated by the bit at the lower specific position of the destination address to be transmitted, or the ring transmission indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header Sent to the road,
A cell or packet transferred on a ring or a packet with a cell header input to a node writes a drop address if the bit length of the destination address area required for transfer on this ring is short. The specified address where the data in the drop address memory corresponding to the input transmission path is written, or the address where the data is written as the data, is transferred to this ring within the destination address of the cell or packet or packet with cell header. If it matches the required destination address area, the cell or packet or packet with a cell header is DROP, otherwise it is passed,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device has a long bit length of the source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. The source address of the source address area is divided into an upper source address or upper specific source address area and a lower source address or lower specific source address area, and at the address position specified by the upper source address or upper specific source address area, respectively. , Lower source address or lower specific source address written, or higher source address or upper specific source address written to the address position specified by lower source address or lower specific source address, respectively, for ring If there are two drop address memories and write data at the same address position in the memory and the data is different from the data to be written, the one drop address table in which the source address to be written is written in the drop address table and Have
A cell or packet or cell header with a cell header that ADDs to the ring of the node, for either the drop address memory and the drop address table of one of the nodes, the cell header or packet header of the call or routing cell header or payload When the bit length of the source address area required for transfer in this ring is long among the source addresses included in the header of the packet, if there is no write data at the addressing position in the memory of the source address, both For drop address memory, the source address of the source address area required for transfer in this ring is divided into an upper source address or upper specific source address and lower source address or lower specific source address. Write the lower source address or lower specific source address to the address position specified by the upper source address or upper specific source address, respectively, or write to the address position specified by the lower source address or lower specific source address, respectively. After writing the upper source address or upper specific source address, or there is write data at the addressing position of the upper source address or upper specific source address, and the data is not the lower source address or lower specific source address, respectively. Or when there is write data at the address specified position of the lower source address or lower specific source address and the data is not the upper source address or upper specific source address, respectively. After writing the source address or the specific source address to the drop address table, on the other hand, there is write data at the addressing position of the memory specified by the upper source address or the upper specific source address, and the data is If it is a lower source address or lower specific source address, respectively, or there is write data at the addressing position of the lower source address or lower specific source address, and that data is the upper source address or upper specific source address, respectively. If there is, or if the source address or its specific source address is in its drop address memory, then the cell header of the call or routing cell header or payload or packet with cell header Or send to the ring transmission line indicated by the bit at the lower specific position of the source address or cell or packet with cell header or destination address contained in the packet header, or the packet header or single packet header, or the cell or packet or Send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the packet with the cell header,
The cell or packet or cell header packet transferred on the ring that is input to the node is the destination address area of the destination address area required for transfer on this ring, or the upper specific destination address. If the data written in the specified ring address corresponding to the drop address memory matches the lower destination address or lower specific destination address, or the lower destination address or lower specific destination The data written at the address location of the ring-corresponding drop address memory specified by the destination address is the upper destination address or upper address, respectively. When matching a particular destination address, or if the destination address or a specific destination address is in the drop address table, the packet with the cell or packet or cell header, and DROP, otherwise slew,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When the bit length of the source address area required for transfer in this ring is long among the source addresses of the cell or packet to be added or the packet with the cell header, the node device sets the source address in the source address area higher. The source address or upper specific source address is divided into the lower source address or lower specific source address, and the upper source address or upper specific source address is specified at the address position specified by the upper source address or upper specific source address or the subsequent address position In addition, a lower source address or a lower specific source address is written as data corresponding to each, or an address position specified by the lower source address or the lower specific source address or an address position after that A lower source address or a lower specific source address and, in correspondence with each of the upper source address or higher specific source address as the data is written, has two drop address memory of the ring corresponds,
A cell or packet or cell header packet ADDed to the ring of the node is the cell header or packet header or single packet of the call or routing cell header or payload or packet with the cell header for the drop address memory corresponding to the ring input by the node. If the bit length of the source address area or specific source address area required for transfer in this ring is long, the upper source address, upper specific source address, lower source address or lower specific If there is no write data that matches the address location of the source address in that memory and the address location within the specified range thereafter, transfer in this ring for both drop address memories When the bit length of the required source address area is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and is specified by the upper source address or upper specific source address. Write the lower source address or lower specific source address as data corresponding to the upper source address or upper specific source address and corresponding to the address position within the specified range after that or the lower source address. Alternatively, the lower source address or lower specific source address and the higher source address or upper address corresponding to the address position specified by the lower specific source address or within the specific range after that, respectively. After writing a fixed source address as data, there is write data at the addressed location in the memory specified by the upper source address or upper specified source address or an address within a specified range thereafter, and the data Is the upper source address or upper specific source address and the corresponding lower source address or lower specific source address, or specified by the lower source address or lower specific source address or an address within a specific range thereafter If there is write data at the addressed location of the memory and the data is a lower source address or lower specific source address and an upper source address or upper specific source address corresponding respectively, As it is, send it to the corresponding ring transmission line,
The cell or packet or cell header packet transferred on the ring that is input to the node is the destination address area of the destination address area required for transfer on this ring, or the upper specific destination address. The data written at the specified ring-corresponding drop address memory address position or within an address position within a specific range after that corresponds to the upper destination address or upper specific destination address and its lower level. If it matches the destination address or lower specific destination address, or is specified by the lower destination address or lower specific destination address Drop address memory addressing addressed to the address or the address within the specified range thereafter, the lower destination address or the lower specified destination address and the higher destination address corresponding to each Or if it matches the upper specific destination address, the cell or packet or packet with cell header is DROP, otherwise it is passed through,
A node device for transferring a cell or packet or a cell header-attached packet that operates in a MAC operation type 1 flow operation or a MAC operation type path. In a node device used for a double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case, it has two drop address tables where the source address of the input packet is written in both drop address tables corresponding to the ring,
A cell or packet or packet with a cell header ADDed to the ring of a node is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell or packet or packet with cell header, or the packet with cell or packet or cell header Is sent to the ring transmission path indicated by the ADD destination ring transmission path selection bit
The cell or packet or packet with cell header transferred on the ring entered to the node is the destination address of the cell or packet or packet with cell header whose address in the drop address table corresponding to the entered ring transmission path in which only the drop address is written If there is more than one port exiting from the ring, the port written with the address is simply DROP if there is only one port exiting from the ring, otherwise it is passed through.
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device, if the bit length of the source address area required for transfer in this ring is short among the source addresses of the input cell or packet or packet with cell header, It has a drop address memory with the same write data corresponding to the ring, in which 1 is written at the addressing position of the source address area or the limited source address area and 1 is written correspondingly,
A cell or a packet with a cell header or a packet with a cell header that is ADDed to the ring of the node is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address in the case of a cell, while in the case of a packet or a packet with a cell header Send to the ring transmission path indicated by the bit at the lower specific position of the address or destination address, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header,
A cell or packet transferred on a ring or a packet with a cell header input to a node writes a drop address if the bit length of the destination address area required for transfer on this ring is short. The specified address where the data in the drop address memory corresponding to the input transmission path is written, or the address where the data is written as the data, is transferred to this ring within the destination address of the cell or packet or packet with cell header. If it matches the required destination address area, the cell or packet or packet with a cell header is DROP, otherwise it is passed,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device has a long bit length of the source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. The source address of the source address area is divided into an upper source address or upper specific source address area and a lower source address or lower specific source address area, and the lower source is located at the address specified by the upper source address or upper specific source address area. An address or lower specific source address area is written, or an upper source address or upper specific source address area is written at the address position specified by the lower source address or lower specific source address area. And less memory, if there is write data to the same address location of the memory, if different from the data to be written has a its source address field the writing on the drop address table of one to be written drop address table,
A cell or a packet with a cell header or a packet with a cell header that is ADDed to the ring of the node is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address in the case of a cell, while in the case of a packet or a packet with a cell header Send to the ring transmission path indicated by the bit at the lower specific position of the address or destination address, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header,
The cell or packet or packet with cell header that is transferred on the ring that is input to the node corresponds to the ring corresponding to the ring address specified by the higher destination address in the destination address area required for transfer on this ring. If the data written in the address location of the drop address memory matches the lower destination address or lower specific destination address, or the address location specified by the lower destination address or lower specific destination address If the data being written matches the higher destination address, or if the specific destination address is in the drop address table, Is packet with a packet or cell header, and DROP, the other is through,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a double ring network,
When the bit length of the source address area required for transfer in this ring is long among the source addresses of the cell or packet to be added or the packet with the cell header, the node device sets the source address in the source address area higher. The source address or upper specific source address is divided into the lower source address or lower specific source address, and the upper source address or upper specific source address is specified at the address position specified by the upper source address or upper specific source address or the address position after that. In addition, the lower source address or the lower specific source address is written as data corresponding to each, or the address location specified by the lower source address or the lower specific source address or the address location after that , Lower source address or a lower specific source address and, in correspondence with each of the upper source address or higher specific source address as the data is written, has two drop address memory of the ring corresponds,
A cell or a packet with a cell header or a packet with a cell header that is ADDed to the ring of the node is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address in the case of a cell, while in the case of a packet or a packet with a cell header Send to the ring transmission path indicated by the bit at the lower specific position of the address or destination address, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header,
The cell or packet or cell header packet transferred on the ring that is input to the node is the destination address area of the destination address area required for transfer on this ring, or the upper specific destination address. The data written at the specified ring-corresponding drop address memory address position or within an address position within a specific range after that corresponds to the upper destination address or upper specific destination address and its lower level. If it matches the destination address or lower specific destination address, or is specified by the lower destination address or lower specific destination address Drop address memory addressing addressed to the address or the address within the specified range thereafter, the lower destination address or the lower specified destination address and the higher destination address corresponding to each Or if it matches the upper specific destination address, the cell or packet or packet with cell header is DROP, otherwise it is passed through,
A node device for transferring a cell or a packet that operates in a MAC operation type path or a packet with a cell header. In a node device used for a single or double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case it has a single drop address table with the source address of the input cell or packet or packet with cell header,
A cell or packet or packet with a cell header that ADDs to the ring of a node is included in the packet header or packet header of the call or routing cell payload in the node drop address table or the packet with the calling or routing cell header If there is no address, write the port and its source address if there are multiple ports leaving the ring, and if there is only one port leaving the ring, write only the source address to the table before making a call or Source address or destination address included in packet header or packet header of packet or packet header of packet or packet header of outgoing call or routing cell header with routed cell If there is a source address of the cell or packet or packet with cell header, the source address or destination address of the cell or packet or packet with cell header is left as it is. Send to the ring transmission path indicated by the bit of the lower specific position, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or cell header packet,
A cell or packet with a cell header or a packet with a cell header transferred on a ring entered to a node will be sent from the ring if the address in the drop address table in which only the drop address is written matches the destination address of the cell or packet or packet with a cell header. If there are multiple outgoing ports, the port written with the address is DROP if there is only one port exiting from the ring, or if there is no port, the ring transmission path is a cell, packet or cell header It matches the ring transmission path indicated by the ADD destination ring transmission path identification bit of the attached packet or the ring transmission path indicated by the bit at the lower specific position of the source address or destination address of the cell or packet or packet with cell header. And after the source address is imparted with multi orbiting bits if the drop address table, and others are configured to directly output to the ring transmission path,
A node device that forwards a cell or packet with a MAC operation type path or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device, if the bit length of the source address area required for transfer in this ring is short among the source addresses of the input cell or packet or packet with cell header, It has a drop address memory with the same write data corresponding to the ring, in which 1 is written at the addressing position of the source address area or the limited source address area and 1 is written correspondingly,
A cell or packet or packet with a cell header that ADDs to the ring of a node, for the drop address memory of one of the nodes, the cell header or packet header of the call or routing cell or the packet with cell header or the header of a single packet If the bit length of the source address area required for transfer in this ring is short among the source addresses included in the, the port exiting from the ring if there is no write data at that source address area addressing position in the memory Is simply written 1 at the source address area addressing location of the drop address memory, after writing the source address area source address and corresponding 1 or at the memory address of the memory This If there is write data at the source address area addressing position required for ring transfer, it is included in the cell header or packet header of the call or routing cell header or the packet with cell header or the header of a single packet as it is ADD destination ring transmission path that is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the source address or cell or cell header packet or packet header included in the cell, or packet or cell header Sent to the ring transmission path indicated by the selected bit,
A cell or packet transferred on a ring or a packet with a cell header input to a node writes a drop address if the bit length of the destination address area required for transfer on this ring is short. The specified address where the data in the drop address memory corresponding to the input transmission path is written, or the address where the data is written as the data, is transferred to this ring within the destination address of the cell or packet or packet with cell header. If it matches the required destination address area, the cell or packet or packet with cell header is DROPed or not, and the ring transmission line has the cell or packet or packet with cell header. Matches the ring transmission path indicated by the DD destination ring transmission path identification bit, or matches the ring transmission path indicated by the bit at the lower specific position of the source address or destination address of the cell or packet or packet with cell header, and If the bit length of the source address area required for transfer on this ring is short among the source addresses of cells or packets transferred on the input ring or packets with cell headers, it corresponds to the input transmission path in which the drop address is written The specified address where the data of the drop address memory is written or the address where the data is written as the data is in the source address area necessary for transfer in this ring, within the source address of the cell or packet or packet with cell header When to match , After imparting multi orbiting bits in the cell or packet or cell headers with packet, and others are configured to directly output to the ring transmission path,
A node device that forwards a cell or packet with a MAC operation type path or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header. In a node device used for a double ring network,
When the bit length of the source address area required for transfer in this ring is long among the source addresses of the cell or packet to be added or the packet with the cell header, the node device sets the source address in the source address area higher. The source address or upper specific source address is divided into the lower source address or lower specific source address, and the upper source address or upper specific source address is specified at the address position specified by the upper source address or upper specific source address or the subsequent address position In addition, a lower source address or a lower specific source address is written as data corresponding to each, or an address position specified by the lower source address or the lower specific source address or an address position after that A lower source address or a lower specific source address and, in correspondence with each of the upper source address or higher specific source address as the data is written, has two drop address memory of the ring corresponds,
The cell or packet or packet with cell header to be ADDed to the ring of the node is the cell header or packet of the packet or packet with call header or payload or cell header of the drop address memory and drop address table corresponding to the ring inputted by the node. If the bit length of the source address area or specific source address area required for transfer in this ring is long among the source addresses included in the header or the header of a single packet, the upper source address or upper specific source address or lower source If there is no write data that matches the address location of the memory at the address or lower specific source address and the address location within the specified range after that, both drop address memos When the bit length of the source address area required for transfer in this ring is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the upper source address Or whether the lower source address or the lower specific source address is written corresponding to the upper source address or the upper specific source address and the address position specified by the upper specific source address or within an address position within the specific range thereafter. Or the lower source address or lower specific source address and the upper source address corresponding to the address position specified by the lower source address or lower specific source address or within the specific range thereafter. Is written at the addressed location in the memory specified by the upper source address, the upper specific source address, or an address within the specified range thereafter, and the data Is the upper source address or upper specific source address and the corresponding lower source address or lower specific source address, or specified by the lower source address or lower specific source address or an address within a specific range thereafter If there is write data at the addressed location of the memory and the data is a lower source address or a lower specific source address and an upper source address or an upper specific source address corresponding to each, As is, the source address contained in the cell header or packet header or single packet header of the packet or packet header with the cell header or cell header or the destination address contained in the packet or packet header of the call or routing cell header Send to the ring transmission path indicated by the bit at the specific position, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or cell header packet,
The cell or packet or cell header packet transferred on the ring that is input to the node is the destination address area of the destination address area required for transfer on this ring, or the upper specific destination address. The data written at the specified ring-corresponding drop address memory address position or within an address position within a specific range after that corresponds to the upper destination address or upper specific destination address and its lower level. If it matches the destination address or lower specific destination address, or is specified by the lower destination address or lower specific destination address Drop address memory addressing addressed to the address or the address within the specified range thereafter, the lower destination address or the lower specified destination address and the higher destination address corresponding to each Alternatively, if it matches the upper specific destination address, the cell or packet or packet with cell header is DROPed or not, and the ring transmission path has an ADD destination that the cell or packet or packet with cell header has. The ring transmission indicated by the bit in the lower specific position of the source address or destination address of the cell or packet or packet with cell header matches the ring transmission path indicated by the ring transmission path identification bit A ring-corresponding drop that matches the path and is specified by its upper source address or upper specific source address in the source address area of the cell or packet or packet with cell header that is required for transfer on this ring The data written at the address location in the address memory or in an address location within the specified range thereafter matches the upper source address or upper specified source address and its corresponding lower source address or lower specified source address. Or the data written at the address location of the ring-corresponding drop address memory specified by the lower source address or the lower specific source address or the address location within the specified range thereafter is the lower source address Or, if it matches the lower specific source address and the upper source address or upper specific source address corresponding to each, the multi-round bit is added to the cell or the packet or the packet with the cell header, and the others are left as it is. It is configured to output to the ring transmission line,
A node device that forwards a cell or packet with a MAC operation type path or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device has a long bit length of the source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. The source address of the source address area is divided into an upper source address or upper specific source address area and a lower source address or lower specific source address area, and the lower source is located at the address specified by the upper source address or upper specific source address area. The ring-corresponding drop address where the address or lower specific source address area is written or the upper source address or upper specific source address is written at the address position specified in the lower source address or lower specific source address area A memory, if there is write data to the same address location of the memory, if different from the data to be written has a its source address field the writing on the drop address table of one to be written drop address table,
The cell or packet or packet with cell header ADDed to the ring of the node is the cell header or packet of the packet or packet with the header or payload or cell header of the call or routing cell for the drop address memory and drop address table corresponding to the ring input by the node. If the bit length of the source address area required for transfer in this ring is long among the source addresses included in the header or the header of a single packet, if there is no write data at the addressing position of that memory of the source address, For both drop address memories, the source address of the source address area required for transfer in this ring is the upper source address or upper specific source address and lower source address or lower specific source. Divided into addresses, the lower source address or lower specific source corresponding to the lower source address or lower specific source address or upper source address or upper specific source address and the address position specified by the upper source address or upper specific source address. Memory after address is written or upper source address or upper specific source address is written at address location specified by lower source address or lower specific source address, or specified by upper source address or upper specific source address If there is write data at the address specified position and the data is not the lower source address or lower specific source address, or the address of the lower source address or lower specific source address If there is write data at the specified position and the data is not the upper source address or upper specific source address, after writing the specific source address to the drop address table, the upper source address or upper specific source When there is write data at the addressing position of the memory specified by the address and the data is the lower source address or the lower specific source address, or at the address specified position of the lower source address or the lower specific source address If there is write data and the data is an upper source address or an upper specific source address, or if the specific source address is in the drop address memory, the header or caller or routing cell header or Is sent to the ring transmission line indicated by the bit at the lower specific position of the source address included in the cell header of the packet with the payload or cell header or the header of the single packet or the destination address included in the packet of the packet with the cell header or packet header Or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header,
The cell or packet or packet with cell header that is transferred on the ring that is input to the node corresponds to the ring corresponding to the ring address specified by the higher destination address in the destination address area required for transfer on this ring. If the data written in the address location of the drop address memory matches the lower destination address or lower specific destination address, or the address location specified by the lower destination address or lower specific destination address If the data being written matches the higher destination address, or if the specific destination address is in the drop address table, If the packet or packet with cell header is DROP or not, the ring transmission path matches the ring transmission path indicated by the ADD destination ring transmission path identification bit of the cell or packet or packet with cell header, or cell Or the source address of the cell or packet or packet with cell header that matches the ring transmission path indicated by the bit at the lower specific position of the source address or destination address of the packet or packet with cell header and that is transferred on the ring input to the node The data written at the address position of the drop address memory corresponding to the ring specified by the higher source address or higher specific source address of the source address area required for transfer in this ring is the lower source. If the address or lower specific source address matches, or if the data written at the address position specified by the lower source address or lower specific source address matches the upper source address or upper specific source address, Or when the specific source address is in the drop address table, after giving a multi-round bit to a cell or packet or packet with a cell header, the rest is output to the ring transmission path as it is.
A node device that forwards a cell or packet with a MAC operation type path or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header. In a node device used for a double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case, it has two drop address tables in which the source address of the cell or packet entered or the packet with cell header is written in two drop address tables corresponding to the ring,
A cell or packet or packet with a cell header that ADDs to the ring of a node is included in the packet header or packet header of the call or routing cell payload in the node drop address table or the packet with the calling or routing cell header If there is no address, write the port and its source address if there are multiple ports leaving the ring, and if there is only one port leaving the ring, write only the source address to the table before making a call or Source address or destination address included in packet header or packet header of packet or packet header of packet or packet header of outgoing call or routing cell header with routed cell If there is a source address of the cell or packet or packet with cell header, the source address or destination address of the cell or packet or packet with cell header is left as it is. Send to the ring transmission path indicated by the bit of the lower specific position, or send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or cell header packet,
A cell or packet or packet with a cell header entered from a ring transmission line is when the destination address of the cell or packet or packet with a cell header is in the drop address table for the ring entered by the cell or packet or packet with a cell header. When there are a plurality of ADD ports, the data is output to the ADD port written together with the address. When there is one ADD port, the data is output to the ADD port. The ring transmission path indicated by the ADD destination ring transmission path identification bit of the packet with the cell header or the bit at the lower specific position of the source address or destination address of the cell or packet or packet with the cell header Consistent with grayed transmission path, and after the source address is imparted with multi orbiting bits when in the ring corresponding drop address table entered the packet, and others are configured to directly output to the ring transmission path,
A node device that forwards a cell or packet with a MAC operation type path or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header. In a node device used for a double ring network,
A cell or packet used in a node device or a packet with a cell header has a ring transmission path identification bit, and a ring transmission path identification bit transmitted / received between a transmitting node and a receiving node of the cell or packet or cell header is received by a transmitting node. A configuration in which a bit opposite to a ring transmission line identification bit of a packet or a packet with a cell header is a ring transmission line identification bit of a transmission cell or a packet or a packet with a cell header,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case it has a single drop address table with the source address of the input cell or packet or packet with cell header,
A cell or packet with packet header or packet with cell header to be ADDed to the ring if the drop address table does not have the source address included in the packet header or packet header of the packet with the call or routing cell header or packet with the call or routing cell header When there are multiple ADD ports, the source address and ADD port number of the cell or packet or packet with cell header are written in the table, and when there is only one ADD port, only the source address of the cell or packet or packet with cell header is written in the table. After that, if there is the source address of the cell or packet or packet with cell header, the ADD destination ring transmission path of the cell or packet or packet with cell header is left as it is. Sent to the ring output corresponding to the ring transmission path indicated by another bit,
When the destination address of a cell or packet input from a ring transmission line or a packet with a cell header is in the drop address table and there are a plurality of ADD ports, output to the ADD port written together with the address, and the ADD port Is output to the ADD port when there is one, or when it is not, it is configured to output to the ring transmission path as it is, or when there is no, the ring transmission path has a cell or a packet or a packet with a cell header. This is a configuration in which when the DDR destination ring transmission path identification bit matches the ring transmission path and the source address is in the drop address table, a multi-round bit is added, and the others are output as they are to the ring transmission path. ,
A node device that forwards a cell or packet with a MAC operation type path or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header. In a node device used for a double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case, it has one working drop address table and one spare drop address table in which the source address of the entered cell or packet or packet with cell header is written on the working side,
A cell or packet or packet with a cell header that ADDs to the ring of the node is included in the packet drop header or packet header of the packet with the call or routing cell header or the packet with the call or routing cell header in the current drop address table of the node If there is no source address to be written, if there are multiple ports exiting the ring, write the port and its source address, and if there is only one port exiting the ring, write only the source address to the table, The source address or the destination address contained in the packet header or packet header of the packet with the call or routing cell header or the packet header of the call or routing cell header. If the source address of the cell or packet or packet with cell header is in the current drop address table, the destination address table or drop address table is sent as is. If a ring transmission path to be ADD corresponding to the destination address of the cell or packet or cell header packet is written, the transmission is performed in the ADD destination ring transmission path identification bit of the cell or packet or cell header packet. If the path name is written and not written in the transmission path, and the ring transmission path to be ADD corresponding to the source address in the working drop address table is written, the ADD destination of the packet If the transmission line is written in the transmission line identification bit, and if it is not written in that transmission line, it indicates the bit at the lower specific position of the source address or destination address of the cell or packet or packet with cell header Sent to the ring transmission line, or sent to the ring transmission line indicated by the ADD destination ring transmission line identification bit of the packet,
When the destination address of a cell or packet input from a ring transmission path or a packet with a cell header is in the current drop address table and there are a plurality of ADD ports, output to the ADD port written together with the address, If there is only one ADD port, it is output to the ADD port. If there is no ADD port, a spare drop address table is searched. If there is more than one ADD port, if there are multiple ADD ports, the ADD port written with that address is sent to the ADD port. If there is only one ADD port, it is output to the ADD port.
If there is no hit for a certain time in the search for the spare drop address table, the spare drop address table memory is cleared and the spare drop address table is used as the current one. Reserve
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node equipment has the bit length of the source address area or specific source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. If it is shorter, 1 is written in the addressing position of the source address area or the specific source address area, or the source address or the specific source address area is written with 1 corresponding to the source address or the specific source address area. Has two current drop address memories with write data and two spare drop address memories,
A cell or packet or a cell header packet that ADDs to the ring of the node, for one working drop address memory of the node, the cell header or packet header of the call or routing cell header or payload or cell header packet or a single packet If the bit length of the source address area or specific source address area required for transfer in this ring is short among the source addresses included in the header, the addressing position of that source address area or specific source address area in that memory If there is no write data, if there is only one port exiting the ring, simply write 1 to the source address area of both working drop address memories or the addressing location of the specific source address area, or The source address area or the specific source address area of the source address area or the corresponding source address area and the corresponding source address area or the specific source address area necessary for the transfer in this ring of the working drop address memory of one of them If there is write data at the addressing location, the source address or cell or cell header included in the cell header or packet header of the packet with the header or payload or cell header of the call or routing cell or the header of a single packet is left as is It is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the packet or packet header, or the ADD destination list of the cell or packet or packet with cell header Sent to the ring transmission path indicated by the grayed transmission path selection bits,
A cell or packet transferred on a ring or a packet with a cell header input to a node writes a drop address if the bit length of the destination address area required for transfer on this ring is short. The specified address where the data of the working drop address memory corresponding to the input transmission path is written, or the address where the data is written as data is transferred in this ring within the destination address of the cell or packet or packet with cell header. If it matches the destination address field required for the cell, the cell or packet or packet with cell header is DROP,
On the other hand, if the bit length of the destination address area required for transfer on this ring is short for the cell or packet or packet with cell header, the current address corresponding to the input transmission path in which the drop address is written is used. The specified address where the data of the drop address memory is written, or the address where the data is written as the data is the destination address area required for transfer in this ring within the destination address of the cell or packet or packet with cell header If it does not match, search the spare drop address memory,
If the bit length of the destination address area required for transfer on this ring is short within the destination address of a cell or packet or packet with a cell header, a preliminary drop corresponding to the input transmission path in which the drop address is written The specified address where the data in the address memory is written or the address where the data is written is stored in the destination address area required for transfer on this ring, in the destination address of the cell or packet or packet with cell header. If it matches, the cell or packet or packet with cell header is DROP,
On the other hand, if the bit length of the destination address area required for transfer on this ring is short among the destination address, the cell or packet or packet with a cell header is reserved for the input transmission path in which the drop address is written. The specified address where the data of the drop address memory is written or the address where the data is written as the data is the destination address required for transfer in this ring among the destination addresses of the cell or packet or packet with cell header If it does not match the area, output it directly to the ring transmission line,
If the read data does not match the comparison data for a certain period of time in the search of both spare drop address memories, both spare drop address memories are cleared at the same time, and each spare drop address memory is simultaneously used. And two ring address drop address memories that have been used until now are reserved simultaneously.
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device has a long bit length of the source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. The source address of the source address area is divided into an upper source address or upper specific source address area and a lower source address or lower specific source address area, and at the address position specified by the upper source address or upper specific source address area, respectively. , Lower source address or lower specific source address written, or higher source address or upper specific source address written to the address position specified by lower source address or lower specific source address, respectively, for ring If there are two current drop address memories, two spare drop address memories, and write data at the same address in the memory, and the data is different from the data to be written, the source address to be written is stored in the drop address table. Has the written current drop address table and spare drop address table,
A cell or packet or cell header with a cell header that ADDs to the ring of a node is the cell header or packet header of the call or routing cell header or payload or packet with cell header for one of the node's working drop address memory and working drop address table Or, if the bit length of the source address area required for transfer in this ring is long among the source addresses included in the header of a single packet, if there is no write data at the addressing position of the memory of the source address, For both working drop address memories, the source address of the source address area required for transfer in this ring is the upper source address or upper specific source address and lower source address or lower specific source. Write the lower source address or lower specific source address to the address position specified by the higher source address or higher specific source address, or specify the lower source address or lower specific source address, respectively. After the upper source address or upper specific source address is written, or there is write data at the address specified position of the upper source address or upper specific source address, respectively, and the data is the lower source address or lower specific address, respectively. If it is not the source address, or there is write data at the address specified position of the lower source address or lower specific source address, and the data is the upper source address or upper specific source address, respectively. If the source address or the specific source address is written to the working drop address table, there is write data at the addressing position of the memory specified by the upper source address or the upper specific source address. And the data is a lower source address or a lower specific source address, respectively, or there is write data at the addressing position of the lower source address or the lower specific source address, and the data is an upper source address, respectively. Or if it is a higher specific source address, or if the source address or the specific source address is in its working drop address table, it will remain with the header or payload or cell header of the calling or routing cell Sent to the ring transmission path indicated by the source address included in the cell header or packet header of the packet packet or the packet at the lower specific position of the destination address included in the cell or packet with cell header or packet header, or Send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header,
The cell or packet or cell header packet transferred on the ring that is input to the node is the destination address area of the destination address area required for transfer on this ring, or the upper specific destination address. If the data written in the address location of the specified drop-capable working drop address memory matches the lower destination address or lower specific destination address, respectively, or the lower destination address or lower specific address The data written in the address position of the working drop address memory corresponding to the ring specified by the destination address is the upper destination address. If other matching upper specific destination address, or if the destination address or a specific destination address is in the working drop address table, the packet with the cell or packet, or cell header, and DROP,
On the other hand, a cell or packet or a packet with a cell header is a working address corresponding to the ring specified by the upper destination address or the upper specific destination address in the destination address area required for transfer on this ring, among the destination addresses. The data written in the address location of the drop address memory does not match the lower destination address or the lower specific destination address, or is specified by the lower destination address or the lower specific destination address. The data written to the address position of the ring-capable working drop address memory is the upper destination address or upper specific destination, respectively. If that does not match the Yon'adoresu, or destination address or a specific destination address is in the absence of the working drop-address table, to find a spare drop address memory,
A cell or packet or a packet with a cell header is a drop for the ring that is specified by the higher destination address or higher specific destination address of the destination address area required for transfer on this ring. If the data written in the address location of the address memory matches the lower destination address or lower specific destination address, respectively, or the ring specified by the lower destination address or lower specific destination address The data written at the address position of the corresponding spare drop address memory is the upper destination address or upper specific destination address. If that matches the address, or if the destination address or a specific destination address is in standby drop address table, the packet with the cell or packet, or cell header, and DROP,
On the other hand, a cell or a packet or a packet with a cell header is a spare corresponding to the ring specified by the upper destination address or the upper specific destination address in the destination address area required for transfer in this ring. If the data written at the address location of the drop address memory does not match the lower destination address or lower specific destination address, or is specified by the lower destination address or lower specific destination address, respectively. The data written at the address position of the spare drop address memory corresponding to the ring is the upper destination address or upper specific destination, respectively. If no match Activation address, or if the destination address or a specific destination address is not in standby drop address table outputs it to the ring transmission path,
If both the spare drop address memory and the spare drop address table are searched and the read data does not match the comparison data for a certain period of time or does not hit, both the spare drop address memory and the spare drop address memory While clearing the drop address table at the same time, the spare drop address memory and the spare drop address table are used simultaneously, and the drop address memory and the drop address table corresponding to the two rings that have been used so far are simultaneously used as spares. ,
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
When there is only one port exiting from the ring, the node device has a long bit length of the source address area necessary for transfer in this ring, among the source addresses of the input cell or packet or packet with cell header. The source address in the source address area is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and an address location specified by the upper source address or upper specific source address or a subsequent address location The upper source address or the upper specific source address and the lower source address or the lower specific source address corresponding to the upper source address or the upper specific source address, or the address position specified by the lower source address or the lower specific source address or Two current drop address memories and two spare drops corresponding to the ring, in which the lower source address or the lower specific source address and the upper source address or the upper specific source address are written corresponding to the lower source address or the lower specific source address, respectively. With address memory,
A cell or packet or a cell header with a cell header ADDed to the ring of the node is a cell header or a packet header of a packet with a call header or a routing cell or a packet with a cell header, or a single packet, with respect to a working drop address memory corresponding to the ring inputted by the node. If the bit length of the source address area or specific source address area required for transfer in this ring is long among the source addresses included in the packet header, the upper source address or upper specific source address or lower source address or lower order If there is no write data that matches the addressing position of the memory at the specified source address and the address position within the specified range thereafter, this ring is used for both working drop address memories. When the bit length of the source address area required for the transfer is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the upper source address or upper specific source address Write the lower source address or the lower specific source address corresponding to the upper source address or the upper specific source address and the lower source address or the lower specific source address at the address position specified by or within the specific range after that, or the lower source address Alternatively, the lower source address or lower specific source address and the upper source address or upper specific source are associated with the address position specified by the lower specific source address or within the specific range thereafter. On the other hand, there is write data at the addressing position of the memory specified by the upper source address or upper specific source address or an address within a specified range after that, and the data is the upper source address. The address or upper specific source address and the corresponding lower source address or lower specific source address, or the lower source address or lower specific source address or an address within a specific range after that, If there is data to be written at the addressing position of the memory and the data is a lower source address or a lower specific source address and an upper source address or an upper specific source address corresponding to the lower source address or lower specific source address, the call is made as it is. Or Indication of the bit in the lower specific position of the source address or destination address contained in the packet or packet header with cell header or packet header or packet header of the cell header or packet header or single packet header of the routing cell header or payload or cell header Sent to the ring transmission line, or sent to the ring transmission line indicated by the ADD destination ring transmission line selection bit of the cell or packet or cell header packet,
The cell or packet or cell header packet transferred on the ring that is input to the node is the destination address area of the destination address area required for transfer on this ring, or the upper specific destination address. The data written at the address location of the working drop address memory corresponding to the specified ring or the address location within the specified range after that corresponds to the upper destination address or the upper specified destination address, and If it matches the lower destination address or lower specific destination address, or is specified by the lower destination address or lower specific destination address. The data written at the address position of the working drop address memory corresponding to the ring or the address position within the specific range thereafter is the lower destination address or the lower specific destination address and the upper destination corresponding to the lower destination address or lower specific destination address. If it matches the destination address or higher specific destination address, the cell or packet or packet with cell header is DROP,
On the other hand, a cell or packet or a packet with a cell header is a working address corresponding to the ring specified by the upper destination address or the upper specific destination address in the destination address area required for transfer on this ring, among the destination addresses. The data written at the address location of the drop address memory or the address location within the specified range thereafter is the upper destination address or the upper specified destination address, and the lower destination address or lower specified corresponding to each If it does not match the destination address, or it is the working drop corresponding to the ring specified by the lower destination address or lower specific destination address. The data written at the address location in the address memory or in the address range within the specified range thereafter is the lower destination address or the lower specified destination address and the corresponding upper destination address or upper specified destination. If the destination address does not match, the spare drop address memory is searched, and the cell or packet or the packet with the cell header is the destination address area higher than the destination address area required for transfer on this ring. At the address position of the drop-corresponding spare drop address memory specified by the destination address or the upper specific destination address or the address position within a specific range after that, If the entered data matches the upper destination address or upper specific destination address and the lower destination address or lower specific destination address corresponding to each, or the lower destination address or lower The data written in the address position of the spare drop address memory corresponding to the ring specified by the specific destination address or the address position within the specific range thereafter is the lower destination address or the lower specific destination address, and If it matches the upper destination address or upper specific destination address corresponding to each, the cell or packet or cell header is attached. DROP packets
On the other hand, a cell or a packet or a packet with a cell header is a spare corresponding to the ring specified by the upper destination address or the upper specific destination address in the destination address area required for transfer in this ring. Drop address memory address location or the address location within the specified range after that, the upper destination address or the upper specified destination address and the lower destination address or lower order corresponding to each If it does not match the specific destination address, or the ring-specific spare address specified by the lower destination address or lower specific destination address The data written at the address location within the specified address range or later within the specified address range is the lower destination address or the lower specified destination address, and the upper destination address or upper address corresponding to the lower destination address or the lower specified destination address, respectively. If it does not match the specific destination address, it is output to the ring transmission line as it is,
If the read data does not match the comparison data for a certain period of time in the search of both spare drop address memories, both spare drop address memories are cleared at the same time, and each spare drop address memory is simultaneously used. And two ring address drop address memories that have been used until now are reserved simultaneously.
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a single or double ring network,
When there is only one port exiting from the ring, the node device simply writes 1 in its addressing position when the bit length of the source address of the input cell or packet or packet with cell header is short, or its source address And one corresponding drop address memory and one spare drop address memory with 1 correspondingly written,
On the other hand, when the bit length of the source address is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and is specified by the upper source address or upper specific source address. The lower source address or lower specific source address or upper source address or upper specific source address and corresponding lower source address or lower specific source address are written in the address position, or specified by the lower source address or lower specific source address. Has one current drop address memory and one spare drop address memory with the upper source address or upper specific source address written at the same address location, or the same memory If there is write data to dress position, has its one working drop address table and the spare drop address table written to drop the address table the source address to be written that,
A cell or packet or cell header packet that ADDs to the ring of the node, for the node's current drop address memory, is the source address contained in the packet header or packet header of the packet of the calling or routing cell or of the packet with the cell header. If the number of bits is short, the port that exits the ring if there is no write data in the addressed location of the memory, or if it is long, the addressed location or drop address table of the source address in the memory. In one case, if the bit length of the source address is short in the drop address memory, write 1 to the addressing location, or write 1 to the source address and correspondingly, Source address bits If the source address is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the lower source address or address is specified at the upper source address or upper specific source address. Write the lower source address or lower specific source address corresponding to the lower specific source address or upper source address or upper specific source address, or the upper source address at the address specified by the lower source address or lower specific source address. Or, after writing the upper specific source address, or the source address included in the packet header or packet header of the packet with the payload or cell header of the call or routing cell If the number of bits in the memory is long and there is write data at the addressing position in the memory of the upper source address or upper specific source address and the data is not the lower source address or lower specific source address, or the lower source After writing the source address to the drop address table if there is write data at the addressed location of the memory at the address or lower specific source address and the data is not the upper source address or upper specific source address Or if the number of bits of the source address contained in the packet header or packet header of the packet with the payload or cell header of the call or routing cell is short, write data to that addressed location in that memory On the other hand, if it is long, there is write data at the memory addressing location of the upper source address or upper specific source address, and the data is the lower source address or lower specific source address, or , If there is write data at the memory address designation position of the lower source address or the lower specific source address, and the data is the upper source address or the upper specific source address, or the source address is the current drop address table In the packet header or packet header of the packet with the packet header or packet header of the calling or routing cell or the header of the packet or packet with the cell header. That was sent to the ring transmission path indicated by the bits of the lower specific location in the destination address, or sent to the ring transmission path indicated by ADD info ring transmission path selection bits with the added cell or packet or cell headers packets,
If the number of bits of the destination address of the cell or packet transferred on the ring input to the node or the packet with the cell header is short, the data is written in the current drop address memory in which the drop address is written. If the specified address or the address written as data matches the destination address of the cell or packet or packet with cell header, on the other hand, if the bit length of the destination address is long, the higher-order destination When the data written at the address location specified by the address matches the lower destination address or the lower specific destination address, or the lower destination address Or if the data written at the address specified by the lower specific destination address matches the upper destination address, or if the destination address is in the current drop address table, the cell Or packet or packet with cell header is DROP
On the other hand, if the number of bits of the destination address contained in the packet header of the call or routing cell payload or packet with the cell header or the packet header is short, the current drop address memory in which the drop address is written The designated address where data is written or the address written as data does not match the destination address of the cell or packet or packet with cell header, or the payload or cell header of the calling or routing cell If the number of bits of the destination address included in the packet header of the attached packet or the packet header is long, the read data of the address specified position in the memory of the upper destination address Does not match the lower destination address or the lower specific destination address, or the read data at the addressed location in the memory of the lower destination address or the lower specific destination address does not match the upper destination address, Or, if the destination address is not in the current drop address table, the spare drop address memory and the spare drop address table are searched,
When the number of bits of the destination address is short for the cell, packet, or packet with cell header, the designated address where the data is written or data is written as spare data for the spare drop address memory in which the drop address is written. If the destination address matches the destination address of the cell or packet or packet with cell header, on the other hand, if the bit length of the destination address is long, the address position specified by the higher destination address is If the data being written matches the lower destination address or lower specific destination address, or the lower destination address or lower specific destination address Cell or packet or packet with cell header if the data being written matches the upper destination address or the destination address is in the spare drop address table. DROP,
On the other hand, if the bit number of the destination address included in the packet header of the call or routing cell payload or packet with cell header or the packet header is short, the spare drop address memory in which the drop address is written The designated address where data is written or the address written as data does not match the destination address of the cell or packet or packet with cell header, or the payload or cell header of the calling or routing cell If the number of bits of the destination address included in the packet header of the attached packet or the packet header is long, the read data of the address specified position in the memory of the upper destination address Does not match the lower destination address or the lower specific destination address, or the read data at the addressed location in the memory of the lower destination address or the lower specific destination address does not match the upper destination address, Or, if the destination address is not in the current drop address table, it is output as it is to the ring transmission line,
In the search of the spare drop address memory and the spare drop address table, if the read data does not match the comparison data for a certain period of time, the spare drop address memory and the spare drop address table are cleared and the spare drop The address memory and the spare drop address table are used as the current work, and the drop address memory and the drop address table that have been used until then are used as spares.
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case, it has one working drop address table and one spare drop address table in which the source address of the entered cell or packet or packet with cell header is written on the working side,
A cell or packet or packet with a cell header that ADDs to the ring of the node is included in the packet drop header or packet header of the packet with the call or routing cell header or the packet with the call or routing cell header in the current drop address table of the node If there is no source address to be written, if there are multiple ports exiting the ring, write the port and its source address, and if there is only one port exiting the ring, write only the source address to the table, The source address or the destination address contained in the packet header or packet header of the packet with the call or routing cell header or the packet header of the call or routing cell header. If the source address of the cell or packet or packet with cell header is in the current drop address table, the destination address table or drop address table is sent as is. If a ring transmission path to be ADD corresponding to the destination address of the cell or packet or cell header packet is written, the transmission is performed in the ADD destination ring transmission path identification bit of the cell or packet or cell header packet. If the path name is written and not written in the transmission path, and the ring transmission path to be ADD corresponding to the source address in the working drop address table is written, the ADD destination of the packet If the transmission line is written in the transmission line identification bit, and if it is not written in that transmission line, it indicates the bit at the lower specific position of the source address or destination address of the cell or packet or packet with cell header Sent to the ring transmission line, or sent to the ring transmission line indicated by the ADD destination ring transmission line identification bit of the packet,
When the destination address of a cell or packet input from a ring transmission path or a packet with a cell header is in the current drop address table and there are a plurality of ADD ports, output to the ADD port written together with the address, When there is only one ADD port, the output is made to the ADD port. When there is no ADD port, a spare drop address table is searched. The port number is moved or copied to the two drop addresses tables of the active system, and is output to the ADD port written with the address. When there is one ADD port, the address is dropped into the drop address table of the active system Or copy it to Output to DD port, if no the spare outputs it to the ring transmission path,
If there is no hit for a certain time in the search for the spare drop address table, the spare drop address table memory is cleared and the spare drop address table is used as the current one. Reserve
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a single or double ring network,
When there is only one port exiting from the ring, the node device simply writes 1 in its addressing position when the bit length of the source address of the input cell or packet or packet with cell header is short, or its source address And one corresponding drop address memory and one spare drop address memory in which 1 is written correspondingly, and when the bit length of the source address is long, the source address is set to the upper source address or the upper It is divided into a specific source address and a lower source address or a lower specific source address, and a lower source address, a lower specific source address, an upper source address or an upper specific source address and an address position specified by the upper source address or the upper specific source address Corresponding to this, either the lower source address or the lower specific source address is written, or the upper source address or the upper specific source address is written at the address position specified by the lower source address or the lower specific source address. If there is a drop address memory and one spare drop address memory, and there is write data at the same address location in the memory, the one working drop address table in which the source address to be written is written in the drop address table And a spare drop address table,
A cell or packet or cell header packet that ADDs to the ring of the node, for the node's current drop address memory, is the source address contained in the packet header or packet header of the packet of the calling or routing cell or of the packet with the cell header. If the number of bits is short, the port that exits the ring if there is no write data in the addressed location of the memory, or if it is long, the addressed location or drop address table of the source address in the memory. In one case, if the bit length of the source address is short in the drop address memory, write 1 to the addressing location, or write 1 to the source address and correspondingly, Source address bits If the source address is long, the source address is divided into an upper source address or upper specific source address and a lower source address or lower specific source address, and the lower source address or address is specified at the upper source address or upper specific source address. Write the lower source address or lower specific source address corresponding to the lower specific source address or upper source address or upper specific source address, or the upper source address at the address specified by the lower source address or lower specific source address. Or, after writing the upper specific source address, or the source address included in the packet header or packet header of the packet with the payload or cell header of the call or routing cell If the number of bits in the memory is long and there is write data at the addressing position in the memory of the upper source address or upper specific source address and the data is not the lower source address or lower specific source address, or the lower source After writing the source address to the drop address table if there is write data at the addressed location of the memory at the address or lower specific source address and the data is not the upper source address or upper specific source address Or if the number of bits of the source address contained in the packet header or packet header of the packet with the payload or cell header of the call or routing cell is short, write data to that addressed location in that memory On the other hand, if it is long, there is write data at the memory addressing location of the upper source address or upper specific source address, and the data is the lower source address or lower specific source address, or , If there is write data at the memory address designation position of the lower source address or the lower specific source address, and the data is the upper source address or the upper specific source address, or the source address is the current drop address table In the packet header or packet header of the packet with the packet header or packet header of the calling or routing cell or the header of the packet or packet with the cell header. That was sent to the ring transmission path indicated by the bits of the lower specific location in the destination address, or sent to the ring transmission path indicated by ADD info ring transmission path selection bits with the added cell or packet or cell headers packets,
If the number of bits of the destination address of the cell or packet transferred on the ring input to the node or the packet with the cell header is short, the data is written in the current drop address memory in which the drop address is written. If the specified address or the address written as data matches the destination address of the cell or packet or packet with cell header, on the other hand, if the bit length of the destination address is long, the higher-order destination When the data written at the address location specified by the address matches the lower destination address or the lower specific destination address, or the lower destination address Or if the data written at the address specified by the lower specific destination address matches the upper destination address, or if the destination address is in the current drop address table, the cell Or packet or packet with cell header is DROP
On the other hand, if the number of bits of the destination address contained in the packet header of the call or routing cell payload or packet with the cell header or the packet header is short, the current drop address memory in which the drop address is written The designated address where data is written or the address written as data does not match the destination address of the cell or packet or packet with cell header, or the payload or cell header of the calling or routing cell If the number of bits of the destination address included in the packet header of the attached packet or the packet header is long, the read data of the address specified position in the memory of the upper destination address Does not match the lower destination address or the lower specific destination address, or the read data at the addressed location in the memory of the lower destination address or the lower specific destination address does not match the upper destination address, Or, if the destination address is not in the current drop address table, the spare drop address memory and the spare drop address table are searched,
When the number of bits of the destination address is short for the cell, packet, or packet with cell header, the designated address where the data is written or data is written as spare data for the spare drop address memory in which the drop address is written. If the existing address matches the destination address of the cell or packet or packet with cell header, the data at that address location is moved or copied to the same address location in the current drop address memory, while the If the bit length of the destination address is long, the data written at the address location specified by the upper destination address is the lower destination address or the lower specific destination. If the address matches the address, or if the data written at the address location specified by the lower destination address or the lower specific destination address matches the upper destination address, that address in the memory Move the location data as is to the same address location in the working drop address memory, copy it, or move it to the working drop address table if its destination address is in the spare drop address table, Copy the cell or packet or packet with cell header to DROP
On the other hand, if the bit number of the destination address included in the packet header of the call or routing cell payload or packet with cell header or the packet header is short, the spare drop address memory in which the drop address is written The designated address where data is written or the address written as data does not match the destination address of the cell or packet or packet with cell header, or the payload or cell header of the calling or routing cell If the number of bits of the destination address included in the packet header of the attached packet or the packet header is long, the read data of the address specified position in the memory of the upper destination address Does not match the lower destination address or the lower specific destination address, or the read data at the addressed location in the memory of the lower destination address or the lower specific destination address does not match the upper destination address, Or, if the destination address is not in the spare drop address table, it is output directly to the ring transmission line,
In the search of the spare drop address memory and the spare drop address table, if the read data does not match the comparison data for a certain period of time, the spare drop address memory and the spare drop address table are cleared and the spare drop The address memory and the spare drop address table are used as the current work, and the drop address memory and the drop address table that have been used until then are used as spares.
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case, the source address of the input cell or packet or packet with cell header is written in two working drop address tables in the working drop address table and the spare drop address table, one for each ring. Configuration,
A cell or packet that ADDs to the ring of a node or a packet with a cell header, if there are multiple ports exiting the ring, its port and its source address, if only one port exits from the ring, only its source address, After overwriting the two working tables, the source address or header of the packet or packet header with the packet or packet header of the call or routing cell header or packet with the call or routing cell header Is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the destination address, or is sent to the ring transmission path indicated by the ADD destination ring transmission path identification bit of the cell or the packet or the packet with the cell header,
When the destination address of a cell or packet input from a ring transmission path or a packet with a cell header is in the current drop address table corresponding to the input ring of the cell or packet or packet with a cell header, and there are multiple ADD ports The address is written to the ADD port written together with the address. If there is only one ADD port, it is output to the ADD port. In some cases, if there are multiple ADD ports, output to the ADD port written with the address, output to the ADD port if there is only one ADD port, and if there is no spare, transmit the ring as it is Output to the road,
If there is no hit for a certain time in the search of the spare drop address table of each ring transmission path, the spare drop address table memory is cleared and the spare drop address table corresponding to the ring transmission path is used. And the drop address table that was in use until then is reserved,
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
When there are multiple ports exiting from the ring, the node device associates the source address of the cell or packet input to that port with the port corresponding to the port and the port number and assigns the source address to the port exiting from the ring. In one case, the source address of the input cell or packet or packet with cell header is written in two working drop address tables in the working drop address table and the spare drop address table, one for each ring. Configuration,
A cell or packet that ADDs to the ring of a node or a packet with a cell header, if there are multiple ports exiting the ring, its port and its source address, if only one port exits from the ring, only its source address, After overwriting the two working tables, the source address or header of the packet or packet header with the packet or packet header of the call or routing cell header or packet with the call or routing cell header Is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address included in the destination address, or is sent to the ring transmission path indicated by the ADD destination ring transmission path identification bit of the cell or the packet or the packet with the cell header,
When the destination address of a cell or packet input from a ring transmission path or a packet with a cell header is in the current drop address table corresponding to the input ring of the cell or packet or packet with a cell header, and there are multiple ADD ports , And output to the ADD port written together with the address. If there is only one ADD port, output to the ADD port. If not, the spare drop address table corresponding to the ring input by the packet is searched, and the table If there are a plurality of ADD ports, the address and the port number written therewith are moved or copied to the two drop address tables of the active system, and the ADD written together with the address is added. Output to the port If DD port is one, or transfer the address to drop the address table of the active system, as well as copy and outputs the ADD port, if no the spare outputs it to the ring transmission path,
If there is no hit for a certain time in the search of the spare drop address table of each ring transmission path, the spare drop address table memory is cleared and the spare drop address table corresponding to the ring transmission path is used. And the drop address table that was in use until then is reserved,
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a quad ring network,
The quadruple ring has two sets of clockwise and counterclockwise ring configurations. When there are multiple ports that exit from the ring, the port address corresponds to the source address and port number of the cell or packet input to that port or the packet with cell header. Let the source address have a single drop address table in which the source address of the entered cell or packet or packet with cell header is written if there is only one port exiting the ring,
The input cell or packet of each ADD port or the packet with cell header corresponds to one of the two pairs of ring transmission lines with 0 or 1 of the second bit from the lowest bit of the destination address of the cell or packet or packet with cell header. One set to be sent, and sent to the ring transmission path corresponding to the least significant bit of the destination address of each set of cells or packets or packets with cell headers, and DROP packets from the ring can be output to all ADD ports. And
When a cell or packet or a packet with a cell header is input to an ADD port and the source address is not in the drop address table and there are a plurality of ADD ports, the source address and the ADD port number are associated with each other, When the source address is one ADD port, the source address is simply written in the drop address table, and in some cases, the source address is sent as it is to the ring transmission line to be sent, and the cell or packet input from the ring transmission line or When the destination address included in the header of the packet with the cell header is in the drop address table and there are a plurality of ADD ports, the data is output to the ADD port written together with the address, and when there is one ADD port. Just out Output port, when not directly outputs to the ring transmission path,
A node device that forwards a cell or packet with a MAC operation type path or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header. In a node device used for a quad ring network,
The quadruple ring has two sets of clockwise and counterclockwise ring configurations. When there are multiple ports that exit from the ring, the port address corresponds to the source address and port number of the cell or packet input to that port or the packet with cell header. If there is only one port that leaves the ring, the source address of the cell or packet or packet with cell header is written in one working drop address table and one spare drop address table. Have
The input cell or packet of each ADD port or the packet with cell header corresponds to one of the two pairs of ring transmission lines with 0 or 1 of the second bit from the lowest bit of the destination address of the cell or packet or packet with cell header. One set to be sent and sent to the ring transmission line corresponding to the least significant bit of the destination address of each set of cells or packets or packets with cell headers,
A DROP cell or packet with a cell header or a packet with a cell header from a ring is configured to be output to all ADD ports, and the source address of a cell or a packet with a cell header or a packet with a cell header is not in the working drop address table. When there are a plurality of ADD ports, the source address is associated with the ADD port number, and when there is only one ADD port, the source address is simply written into the working drop address table.
If there is, send to the ring transmission path indicated by the lower specific bit of the destination address of the cell or packet or packet with cell header or the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header ,
When the destination address of a cell or packet input from a ring transmission line or a packet with a cell header is in the working drop address table and there are a plurality of ADD ports, output to the output port written together with the address, If there is only one ADD port, it is simply output to the output port. If there is no ADD port, a spare drop address table is searched. If there is more than one ADD port, it is written with the address. If there is only one ADD port, simply output to the output port, otherwise output to the ring transmission line as it is,
If there is no hit for a certain time in the search for the spare drop address table, the spare drop address table memory is cleared and the spare drop address table is used as the current one. Reserve
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a quad ring network,
The quadruple ring has two sets of clockwise and counterclockwise ring configurations. When there are multiple ports that exit from the ring, the port address corresponds to the source address and port number of the cell or packet input to that port or the packet with cell header. If there is only one port exiting from the ring, the source address of the cell or packet with cell header or packet with cell header is entered in the drop address table and the spare drop. Of the address table, it has a configuration to write to the four current drop address tables,
The input cell or packet of each ADD port or the packet with cell header corresponds to one of the two pairs of ring transmission lines with 0 or 1 of the second bit from the lowest bit of the destination address of the cell or packet or packet with cell header. One set to be sent, and sent to the ring transmission path corresponding to the least significant bit of the destination address of each set of cells or packets or packets with cell headers, and DROP packets from the ring can be output to all ADD ports. And
The cell, packet, or packet with cell header input to the ADD port is the source address of the cell, packet, or packet with cell header, and when there are multiple ADD ports, the source address and the ADD port number are associated with each other. If the source address is one ADD port, the source address is simply written in the four working drop address tables, and the ring transmission path indicated by the lower specific bit of the destination address of the cell or packet or packet with cell header, or Send to the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header,
There are multiple ADD ports when the destination address of a cell, packet, or packet with cell header input from the ring transmission path is in the working drop address table corresponding to the ring transmission path to which the cell, packet, or packet with cell header is input. In this case, output to the output port written together with the address. If there is only one ADD port, it is simply output to the output port. When there is a plurality of ADD ports in the table, the output is output to the output port written together with the address, and when there is one ADD port, Simply output to the output port The outputs directly to the ring transmission path,
When there is no hit for a certain time in the search of the spare drop address table corresponding to each ring, the spare drop address table memory is cleared and the spare drop address table corresponding to the ring is used as the current one. The drop address table that was used until now is reserved.
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
It has one ADD port, one drop address table and an ADD source address table corresponding to each ring, and the input cell or packet of the ADD port or a packet with a cell header is the least significant bit of the destination address of that cell or packet or packet with a cell header 0 or 1 can be sent to the corresponding 0 or 1 ring transmission line, and the DROP packet from each ring transmission line can be multiplexed and output to the ADD port,
Ring to which the source address of a cell or packet or a packet with a cell header input to an ADD port assigned with the least significant bit 0 or 1 of the destination address of an ADD cell or packet or cell header to a ring is to be sent If it is not in the ADD address table corresponding to the transmission path, the source address is written in the ADD source address table and the drop address table, and if there is, it is sent as it is, and the lower-level specification of the destination address of the cell or packet or packet with cell header Send to the ring transmission path indicated by the bit, or the ring transmission path indicated by the ADD destination ring transmission path selection bit of the cell or packet or packet with cell header,
If the destination address of the cell or packet or cell header-attached packet input from the ring transmission path is in the drop address table, DROP the cell or packet or cell header-attached packet. It is a configuration to output,
A node device that forwards a cell or packet with a MAC operation type path or a packet with a cell header or a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header. In a node device used for a double ring network,
It has one ADD port, one working drop address table, one spare drop address table, and an ADD source address table corresponding to each ring, and an input cell or packet of the ADD port or a packet with a cell header is the cell or packet or It can be sent to the corresponding 0-system or 1-system ring transmission line by 0 or 1 of the least significant bit of the destination address of the packet with cell header, and the DROP cell or packet from each ring transmission line or the packet with cell header is multiplexed and added. A configuration that can output to a port,
Ring to which the source address of a cell or packet or a packet with a cell header input to an ADD port assigned with the least significant bit 0 or 1 of the destination address of an ADD cell or packet or cell header to a ring is to be sent If it is not in the ADD address table corresponding to the transmission path, the source address is written in the ADD address table and the current drop address table, and if there is, the lower-level specification of the destination address of the cell or packet or packet with cell header is left as it is. Send to the ring transmission line indicated by the bit, or the ring transmission line indicated by the ADD destination ring transmission line selection bit of the cell or packet or packet with cell header,
If the destination address of the cell or packet input from the ring transmission path or the packet with the cell header is in the current drop address table, DROP is performed. If there is no destination address, the spare drop address table is searched. If there is no DROP and there is no DROP, it is output to the ring transmission line as it is,
If there is no hit for a certain time in the search of the spare drop address table, the spare drop address table and the memory of the two ADD address tables are cleared and the spare drop address table is used as the current one. The reserved drop address table is used as a spare,
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
All ring transmission lines are configured to have N-stage cascaded table circuits that transmit in parallel in the device,
A cell or packet or cell header packet that ADDs to the ring of the node has no source address of the cell or packet or packet with cell header in the node's working and backup drop address tables, and the source address is written to the working side. Is written to the working table and then sent to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell or packet or cell header packet, or the source address of the cell or packet or packet with cell header is If it is in the working or backup drop address table, it is sent as it is to the ring transmission line indicated by the bit at the lower specific position of the destination address of the cell or packet or packet with cell header. Or, a configuration to be transmitted to the transmission path of the ADD info transmission path identification bit with the added cell or packet or cell headers packets,
The table circuit at each stage includes a set of working and spare drop address tables, a first header reading circuit for each ring transmission path, and a second header reading circuit for each packet stream to be ADDed to the corresponding ring transmission path. Are arranged in parallel, and a cell or packet of each input ring or a packet stream with a cell header is input to the first header reading circuit for each ring transmission path in the first stage, and each second header reading in the first stage is performed. The circuit inputs a cell, packet, or packet with a cell header distributed to the corresponding ring transmission line by the least significant bit of the destination address of the ADD transmission line cell or packet or cell header packet to the node, or the cell or ADD destination transmission path identification bit of packet or packet with cell header Type more corresponding with the cell or packet or cell headers packets distributed to the ring transmission path for each,
In each second header reading circuit of the table circuit at each stage, if the source address of the read input cell or packet or packet with cell header is in the current or spare drop address table of the table circuit at that stage, it corresponds as it is. If the second header reading circuit is not in the N-th stage when it is sent to the ring transmission line and is not in the current or spare state, it is sent to the second header reading circuit in the next stage and is in the N-th stage. In this case, the cell or the packet or the packet with the cell header is sent to the second header reading circuit at the first stage, and the source address of the cell or the packet or the packet with the cell header sent to the second header circuit at the first stage is It can be written to the working drop address table at any stage,
In the first header reading circuit of the table circuit at each stage, if the destination address of the input cell or packet or packet with cell header is in the current drop address table of the table circuit at that stage, that cell or packet or packet with cell header If there is no cell and packet or packet with cell header is dropped, if there is no, and if that stage is not the Nth stage The cell or the packet or the packet with the cell header is output to the first header reading circuit in the next stage as it is, or in the case of the Nth stage, it is a structure that is sent to the output transmission line.
In the table circuit at each stage, if there is no hit for a certain time in the search of the spare drop address table from the first header reading circuit at each stage, the spare drop address table memory is cleared and The drop address table of the current is used as the current drop address table, and the current drop address table is changed to spare,
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device used for a double ring network,
All ring transmission lines are configured to have N-stage cascaded table circuits that transmit in parallel in the device,
A cell or packet or cell header packet that ADDs to the ring of the node has no source address of the cell or packet or packet with cell header in the node's working and backup drop address tables, and the source address is written to the working side. Is written to the working table and then sent to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell or packet or cell header packet, or the source address of the cell or packet or packet with cell header is If it is in the working or backup drop address table, it is sent as it is to the ring transmission line indicated by the bit at the lower specific position of the destination address of the cell or packet or packet with cell header. Or, a configuration to be transmitted to the transmission path of the ADD info transmission path identification bit with the added cell or packet or cell headers packets,
The table circuit at each stage includes a set of working and spare drop address tables, a first header reading circuit for each ring transmission path, and a second header reading circuit for each packet stream to be ADDed to the corresponding ring transmission path. Are arranged in parallel, and a cell or packet of each input ring or a packet stream with a cell header is input to the first header reading circuit for each ring transmission path in the first stage, and each second header reading in the first stage is performed. The circuit inputs a cell, packet, or packet with a cell header distributed to the corresponding ring transmission line by the least significant bit of the destination address of the ADD transmission line cell or packet or cell header packet to the node, or the cell or ADD destination transmission path identification bit of packet or packet with cell header Type more corresponding with the cell or packet or cell headers packets distributed to the ring transmission path for each,
In each second header reading circuit of the table circuit at each stage, if the source address of the read input cell or packet or packet with cell header is in the current or spare drop address table of the table circuit at that stage, it corresponds as it is. If the second header reading circuit is not in the N-th stage when it is sent to the ring transmission line and is not in the current or spare state, it is sent to the second header reading circuit in the next stage and is in the N-th stage. In this case, the cell or the packet or the packet with the cell header is sent to the second header reading circuit at the first stage, and the source address of the cell or the packet or the packet with the cell header sent to the second header circuit at the first stage is It can be written to the working drop address table at any stage,
In the first header reading circuit of the table circuit at each stage, if the destination address of the input cell or packet or packet with cell header is in the current drop address table of the table circuit at that stage, that cell or packet or packet with cell header If not, the spare drop address table of the table circuit at that stage is searched, and if there is, the address is moved or copied to the drop address table of the active system at that stage, and the cell or packet or If the packet with a cell header is dropped and the stage is not the Nth stage, the cell or packet or the packet with the cell header is output to the first header reading circuit at the next stage as it is, or N If it is a step, A configuration for transmitting to a transmission path,
In the table circuit at each stage, if there is no hit for a certain time in the search of the spare drop address table from the first header reading circuit at each stage, the spare drop address table memory is cleared and The drop address table of the current is used as the current drop address table, and the current drop address table is changed to spare,
A node device for transferring a cell or packet with a MAC operation type 1 flow operation or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header. In a node device using a double ring network and having one or a plurality of ADD transmission line ports,
All ring transmission lines are configured to have N-stage cascaded table circuits that are transmitted in parallel within the apparatus, and cells or packets with cell headers or packets with cell headers from each ADD transmission line port are cells in the case of a double ring. Or a configuration in which the least significant bit of the destination address of the packet or packet with a cell header is added to the corresponding ring transmission line,
A cell or packet or cell header packet that ADDs to the ring of the node does not have the source address of the cell or packet or packet with cell header in the drop address table at that stage of the node, and when writing to that table, the source address is After writing to the table, send it to the ring transmission line indicated by the bit at the lower specific position of the destination address of the cell or packet or packet with cell header, or the source address of the cell or packet or packet with cell header is the drop address If it is in the table, it is sent to the ring transmission path indicated by the bit at the lower specific position of the destination address of the cell or packet or packet with cell header, or the cell or packet Tsu bets or a structure to be transmitted to the transmission path of the ADD info transmission path identification bit with the cell header with the packet,
The table circuit at each stage is divided into one drop address table, a first header reading circuit for each ring transmission path, and a cell or packet divided for each of one or more ADD transmission path ports to be ADDed to the corresponding ring transmission path. Alternatively, a second header reading circuit for each packet stream with a cell header is arranged in parallel, and the first header reading circuit for each initial ring transmission line includes a cell or packet of each input ring or a packet with a cell header. The second header reading circuit prepared for each one or a plurality of ADD transmission line ports arranged for each ring transmission line in the first stage is supplied from one or a plurality of ADD transmission line ports to the node. Ring corresponding to the bit of the destination address of the cell or packet or packet with cell header A cell or packet distributed for each transmission path or a packet with a cell header is input, or a cell or packet distributed to a corresponding ring transmission path by an ADD destination transmission path identification bit of the cell or packet or cell header packet or It is a configuration to input a packet with a cell header,
In each second header reading circuit of the table circuit at each stage, if the second header reading circuit at that stage does not have the write permission to the drop address table, the input cell or packet or packet with cell header is left as it is. If it is sent to the second header reading circuit for each ring transmission path in the next stage and further to the second header reading circuit for each ADD transmission path, if the second header reading circuit in that stage has the right to write to the drop address table, the reading is performed. If the source address of the input cell or packet or packet with cell header is in the drop address table of the table circuit at that stage, it is sent to the corresponding ring transmission line as it is, and if it is not in the drop address table, the ADD transmission line port is In one case only the source address is sent, while When there are a plurality of path ports, the source address and the ADD transmission path port number corresponding to the header reading circuit are written in the drop address table, and then the cell or packet or the packet with the cell header is sent to the corresponding ring transmission path. Send out,
In the first header reading circuit of the table circuit at each stage, when there is one ADD transmission line port, the destination address of the input cell or packet or packet with cell header is in the drop address table of the table circuit at that stage. If the cell or packet or packet with cell header is DROP, and there are multiple ADD transmission line ports, the destination address of the input cell or packet or packet with cell header is in the drop address table of the table circuit at that stage. DROP the cell or packet or packet with cell header to the port written with the destination address of the cell or packet or packet with cell header in the table. But if not the N-th stage is either configured to output the packet to the next stage of the first header reading circuit, in the case of the N-th stage is configured to be transmitted to the output transmission paths,
If the drop address table of each stage does not hit in the search for a certain time or longer, the memory of that table is cleared.
A node device that forwards a cell or a packet with a cell operation header or a packet with a cell header or a MAC operation type path operation cell or a packet with a cell header.   93. The node device according to claim 92, wherein the right to write to the drop address table of each second header reading circuit at each stage is switched at an arbitrary time.   93. The node device according to claim 92, wherein the right to write to the drop address table of each second header reading circuit at each stage is switched to the stage where the memory of the drop address table at that stage is cleared.   95. The right to write to the drop address table of each second header reading circuit at each stage is switched to another stage when the drop address table being written becomes full. Node device. In a node device using a double ring network and having one ADD transmission line port,
The two ring transmission lines are configured to have N-stage cascaded table circuits that transmit in parallel in the apparatus, and packets from the ADD transmission line port are sent to the corresponding ring transmission line by the least significant bit of the source address of the packet. The table circuit at each stage includes one drop address table, a first header reading circuit for each ring transmission path, and a second header reading circuit for each packet stream to be ADDed to the corresponding ring transmission path. For each of the second header reading circuits, the transmission line switching having the source address of the packet is performed to switch the transmission ring transmission path of the packet input to the second header reading circuit to the ring transmission path opposite to the normal transmission destination. An address table is arranged in parallel, and the first header reading circuit for each ring transmission path in the first stage has each The packet flow of the power ring transmission line is input, and the second header reading circuit arranged for each ring transmission line in the first stage is provided for each corresponding ring transmission line by the bit of the source address of the packet from the ADD transmission line port. In this configuration, the distributed packet is input. In each second header reading circuit of each stage table circuit, if that stage does not have write permission to the drop address table, the input packet is directly received in the next stage. On the other hand, if there is a permission right, if the source address of the read input packet is in the drop address table of the table circuit at that stage, it is directly sent to the corresponding ring transmission line. If not in the drop address table, write the source address to the drop address table. After that, the packet is sent to the corresponding ring transmission line, and if the destination address of the input packet is in the drop address table of the table circuit of the stage, the first header reading circuit of the table circuit of each stage If the packet is dropped, if not, the packet is output to the first header reading circuit at the next stage. If the drop address table at each stage does not hit for a certain time, the memory of that table is cleared. Has the function to
Further, the packet is input to the first header reading circuit of the table circuit at a certain stage, and the least significant bit of the source address of the packet does not match the system of the input ring transmission path, and the source address of the packet Is in the drop address table of that stage, the transmission line switching corresponding to the second header reading circuit of that stage corresponding to the ring transmission line of the system that matches the least significant bit of the source address of the packet Write the source address of the packet to the address table, or input the packet to the first header reading circuit of the table circuit at a certain stage, and the least significant bit of the source address of the packet is the input ring transmission line A packet that does not match the system of If the packet is in the drop address table at that stage and the transmission line switching bit is set in the packet, the packet corresponding to the ring transmission line of the opposite system to the least significant bit of the source address of the packet Processing to write the destination address of the packet to the transmission path switching address table corresponding to the second header reading circuit of the stage;
In addition to the write permission of each stage, if the source address of the packet input to the second header reading circuit of each stage is in the transmission path switching address table corresponding to the second header reading circuit, A transmission line switching bit is set in the header of the packet, and the second header circuit has a function of switching so that it is sent to the ring transmission line opposite to the ring transmission line that is normally sent,
A node device that transfers a packet that performs a MAC operation type 1 flow operation or a MAC operation type path operation.   The drop address memory is composed of RAM, SRAM or CAM. 52, 54, 58, 59, 61, 63, 64, 67, 68, 71, 73, 77, 78, 80, 82 A node device that transfers the cell or the packet according to any one of the above or a packet with a cell header.   The drop address memory is constituted by a CAM. 55, 56, 57, 60, 65, 69, 72, 79, 53, 54, 58, 59, 61, 63, 64, 67, 68 , 71, 73, 77, 78, 80, 82. The node device that transfers the cell or the packet or the packet with the cell header according to any one of the above.   A cell or packet with a MAC operation path operation or a packet with a cell header is a packet in which the MAC address of the path MAC operation is the MAC address of a MAC in MAC packet in which a MAC header is added before an IP over MAC packet, or an IP over MAC. The IP address is a MAC address of a packet that is a global IP address having the private IP address of an IP over MAC packet that uses a private IP address in its option area, or a packet that has a common destination address of the MAC address of the IP over MAC. A cell in which a packet or path MAC operating address is two VPI addresses of a double cell header of an ATM cell having a double cell header, or a path A cell whose MAC operation address is one VPI address of a double cell header of an ATM cell having a double cell header, or two cells headers of an ATM cell whose path MAC operation address is another VPI before the cell header. A cell that is a VPI address or a path MAC-operating address is a cell that is a VPI address in a cell header of an ATM cell, or a cell that a path MAC-operating address is a MAC address of a path ATM cell over MAC, or a path MAC A packet with a cell header whose operating address is two VPI addresses of a double cell header of a MAC packet having a double cell header, or one of the double cell headers of a MAC packet whose path MAC operating address is a double cell header A packet with a cell header that is a VPI address or an address that operates as a path MAC is a packet with a cell header that is two VPI addresses of a cell header of a MAC packet that has another VPI before the cell header, or an address that operates as a path MAC 69. The node device according to any one of claims 52 to 55 and 62 to 68, wherein the node device is a packet with a cell header which is a VPI address of a cell header of a MAC packet having a cell header.   A MAC operation type cell or packet or a packet with a cell header is a packet in which the address for 1 flow MAC operation is the MAC address of the IP over MAC packet, or the MAC destination for which the address for 1 flow MAC operation is IP over MAC. A packet that is a MAC of a packet having a common address and a MAC source address that is a single address, a packet that is a MAC of an ARP packet, or an address that operates a 1-flow MAC is IP The packet that is the IP address of the over MAC packet, or the packet whose IP address is the IP address of the IP packet, or the address that operates the 1 flow MAC is ATM c A cell that is a MAC address of ll over MAC, or an address that operates one flow MAC is an address of two VPI + VCI or two VCIs of a double cell header of an ATM cell having a double cell header, 1 flow A cell in which the MAC operating address is one VPI + VCI or one VCI address of a double cell header of an ATM cell having a double cell header, or an address in which one flow MAC operates is the VCI of the ATM cell header. The cell that is the address, or the address that operates the one-flow MAC is a cell that is the MAC address of the ATM cell over MAC, or the address that operates the one-flow MAC is the double-cell header of the MAC packet having the double-cell header. 62. A packet with a cell header that is a PI + VCI or VCI address, or a packet with a cell header that is a VPI + VCI or VCI address of a cell header of a MAC packet having a cell header, the packet having a cell header that is a PI + VCI or VCI address. The node device according to any one of 55, 58, and 70 to 98.   The node device according to any one of claims 52 to 100, wherein the header of the packet to be transferred has a transmission path switching bit area, and the ADD transmission path selection bit or the source address of the packet input from the ring transmission path is the highest. If the low-order bit does not match the system of the ring transmission path, and the source address of the packet is in the drop address table, that is, the node device is the ADD node of the packet, add the ADD to the node device. Usually, a ring transmission line that has the same source address as the packet input from the ring transmission line and is reverse to the ring transmission line to which the packet input to the ring transmission line is transferred is selected. The transmission path switch bit is set in the header of the packet being received and the packet is Node is added with a function of switching so that it is transmitted to a ring transmission path that is reverse to the ring transmission path of the system that is normally transmitted that matches the ADD transmission path selection bit or the least significant bit of the source address apparatus.   102. The node apparatus according to claim 101, wherein the ADD transmission path selection bit or the least significant bit of the source address of the packet input from the ring transmission path does not match the ring transmission path system, and the destination of the packet If the address is in the drop address table, that is, the node device is the receiving node of the packet and the transmission path switching bit is set in the packet, the destination of the packet among the packets ADDed to the node device Select the ADD transmission path by setting a transmission path switching bit in the header of the packet that has the same source address as the address, that is, a reverse packet, and normally selected the same ring transmission path as the ring transmission path to which the received packet was input. Bit or source address Node apparatus characterized by adding a function of switching to deliver the ring transmission line opposite system to the usual ring transmission line system which has been delivered to match the lower bits.   The node apparatus according to claim 102, wherein a reverse bit area is provided in the header of the packet, and the source address of the packet arriving from the ring transmission path is in the drop address table, that is, the node apparatus is the ADD node of the packet, The ring transmission path to which the packet is transferred is a node transmission apparatus that is a ring transmission transmission path that does not match the ADD transmission path selection bit of the packet or the least significant bit of the source address, and is input from the ring transmission path that is ADDed to the node apparatus. The transmission path switching bit is set in the header of a packet that normally has a ring transmission path that has the same source address as the received packet and that is reverse to the ring transmission path to which the packet input to the ring transmission path is transferred. ADD transmission path selection bit or source address The node device switched to send to the ring transmission path opposite to the normal transmission ring transmission line that matches the least significant bit of the packet is sent to the least significant bit of the ADD transmission path selection bit or source address of the packet. From the ring transmission path that does not match the bit, the destination address of the packet is in the drop address table, that is, the node device is the receiving node of the packet, and the packet has the transmission path switching bit set, and When a packet whose destination address is the same as the source address of the packet whose destination is changed, i.e., a reverse packet, arrives on the ring transmission path opposite to the normal transmission transmission line. The ring transmission of the system opposite to the normal transmission ring transmission line The packet whose destination is changed is copied to the path, the source address and the destination address of the copied packet are switched, and the node device in which the reverse bit is set is normally transmitting the packet which is the receiving node device. When a packet with the reverse bit set arrives at the node device, the source address and the destination address are exchanged, and the reverse bit is set when the packet is sent to the ring transmission line opposite to the ring transmission line. A node device characterized by adding a function for stopping transmission of a packet.   104. The node device according to claim 103, wherein the node device has a ring transmission line loopback function and detects a transmission line failure, and detects a ring transmission line that has not detected a transmission line failure. If a packet with the reverse bit is detected on a ring transmission line that has not yet detected a transmission line failure, the function to loop back the ring transmission line is added. Feature node equipment.

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