CN100481819C - Method and apparatus for over-ring message retransmitting in elastic grouped ring network - Google Patents
Method and apparatus for over-ring message retransmitting in elastic grouped ring network Download PDFInfo
- Publication number
- CN100481819C CN100481819C CNB2006100723805A CN200610072380A CN100481819C CN 100481819 C CN100481819 C CN 100481819C CN B2006100723805 A CNB2006100723805 A CN B2006100723805A CN 200610072380 A CN200610072380 A CN 200610072380A CN 100481819 C CN100481819 C CN 100481819C
- Authority
- CN
- China
- Prior art keywords
- message
- looped network
- node
- sign
- network sign
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The method includes steps: (1) assigning ring net symbol for each ring net, setting up ring net symbol of this ring net to ring nodes of each ring net; (2) forwarding 'enable' rapidly through ring net, where ring net symbol is set for all ring node; (3) in procedure of forwarding control message of carrying ring net symbol across rings, each ring node in enabled ring net adds network protocol address IP of node in message, media access control (MAC) sub layer protocol address of node, and ring net symbol into quick forwarding table in two layers of this node; (4) based on IP message in three layer, each node in enabled ring net carries out query on the quick forwarding table in two layers; if table is hit and destination ring node has set up ring net symbol, then packing MAC address corresponding to destination IP in message and ring net symbol into data message with ring net symbol, and the packet is sent at second layer. The invention also discloses relevant method.
Description
Technical field
The present invention relates to the technical field that message is transmitted in the RPR network, relate in particular to the method and apparatus that the transannular message is transmitted in a kind of RPR network.
Background technology
Resilient Packet Ring (RPR) is a kind of new media access control sublayer agreement (MAC) of IEEE 802.17 working groups definition, RPR adopts two-way two fine ring topology, can transport service on inside and outside two rings, but transmission direction is opposite, and RPR ring topological structure is as shown in Figure 1.During three layers of networking of existing RPR were used, the main data message of basic frame format that uses provided business support to the upper strata on the looped network.The data message form of basic frame format as shown in Figure 2.The form of the basic controlling byte (baseControl) in the RPR data message as shown in Figure 3, parity check bit wherein (parity) is as keeping, assignment is 0 during transmission, the process of reception does not process; Expansion control byte (extendedControl) form in the RPR data message as shown in Figure 4, wherein reserved field (res) is as keeping, assignment is 0 during transmission, the process of reception does not process.
In present RPR networking plan, will be with message from 3 layers of device forwards to another 3 layers of equipment, need know 3 layers of pairing MAC Address of equipment of purpose, then three-tier message is packaged into corresponding two layers of RPR message, data can be transmitted at link layer.In the RPR looped network, the RPR agreement is to get access to RPR node IP and node M AC address corresponding relation by asynchronous time division (ATD) the control message in the control message.The form of ATD control message as shown in Figure 5, when control types (controlType) field value in the control message was 01, corresponding was exactly the ATD message.The value of ttl field is the maximum node number of RPR loop in the ATD frame, and destination address (DA) territory is set to full 0XFF.The ATD frame sends with the form of broadcasting, can guarantee that all RPR nodes can both receive this message.Can carry multiple different load in the ATD frame, the form of single load as shown in Figure 6, type field (type) by wherein and length field (length) can be unique determines a load.Can get access to the corresponding relation of RPR node IP and node M AC address by the ATD control frame.Because all RPR nodes all can be encapsulated into information of self IP address in the ATD frame that this node will send, the ATD frame is propagated on the RPR loop with the form of broadcasting, every other RPR node except that source node all receives this message, and analysis payload content wherein, then according to source MAC address information in the ATD frame and the IP address information in the load, get access to the corresponding relation of RPR node IP and node M AC address on the loop, then this corresponding relation is saved in the topological database of self.
In existing RPR networking plan, the node data message transmission between the realization link point by the way on the ring.Each node on the RPR ring mainly contains following four kinds of operations to the processing of message.
Upload: the RPR node device is inserted into the RPR message on the RPR looped network; The RPR message is carried on the RPR looped network first.
Download: when the MAC Address of RPR node was identical with da field in the RPR message, node device received data from the data flow that RPR encircles, give the father of node and do respective handling.
Pass by: at the RPR node is not the premature situation of time to live (ttl) of this RPR message destination node and IP bag, will continue to be forwarded to next node by way of the RPR of this node message, and this node was done the ttl field in the heading and subtracted 1 operation this moment.
Reject: at the RPR node is the destination node of RPR message, and perhaps source node perhaps under the overdue situation of Ye Wu TTL, no longer down transmits the message of this node of approach.
For clean culture, multicast, broadcast traffic, each node on the same ring adopts these four kinds of basic operations respectively and makes up the processing that realizes message.Generally for unicast traffic, source node is carried out upload operation to message, and destination node is carried out this message and downloaded and reject operation, and other websites are carried out and passed by operation; For broadcast traffic, all nodes all can be carried out down operation; For flux of multicast, have only the node in the multicast group to carry out down operation.
The RPR looped network is applied in the various levels of network.But in some large-scale networks, an independent ring can't satisfy networking requirement, can use ring usually and intersect, and promptly a plurality of rings connect by a website, and RPR phase cross ring topological structure as shown in Figure 7.The equipment that will be connected across usually on two or more RPR rings in the phase cross ring is called the transannular node, only is connected the equipment on the RPR ring and is called the link point.Though the RPR looped network both can carry two layers Ethernet message and also can carry three layers IP message, in present RPR networking plan, can only transmit the message interaction of realizing between the different rings for three layers by RPR transannular node.But message is realized transmitting through three layers, and efficient is relatively low; And the message that the transannular node will be responsible between a plurality of RPR looped networks transmits and scheduling, therefore to the performance, the particularly performance requirement of three layers of forwarding of transannular node than higher, be unfavorable for reducing networking cost.
Summary of the invention
In view of this, the present invention provides the method and system that the transannular message is transmitted in a kind of RPR net for addressing this problem, and improves the transannular message forward efficiency of RPR looped network.
The solution of the present invention is:
A, be that each looped network distributes the looped network sign, is provided with the looped network sign of this looped network in the link point of each looped network;
B, the looped network that all link points all are provided with the looped network sign are transmitted fast and are enabled;
C, in the process that the control message transannular that carries the looped network sign is transmitted, the name a person for a particular job medium access control sublayer agreement MAC Address of internet protocol address IP, node of the node in the described message and looped network sign of each link in the looped network that is enabled adds to during two layers of this nodes transmit fast;
Each node carries out two layers at the three layers of IP message and transmits inquiry fast in D, the looped network that is enabled, hit if table look-up and purpose link point is provided with the looped network sign, then with the MAC Address of the purpose IP correspondence of this IP message and data message that the looped network sign is encapsulated into band network mark will two layers of transmission.
Wherein, the process that the link point in each looped network is provided with the looped network sign of this node in the described steps A is specially:
A11, transannular node each link point in each looped network that is attached thereto sends the asynchronous time division ATD message that carries the looped network sign;
A12, each link point add the looped network sign according to described message in topological database;
A13, each link ATD message that adds looped network sign load of naming a person for a particular job sends to described transannular node and other link point.
Wherein, described step B is specially:
The transannular node carries the ATD message of enable information to the looped network transmission that all link points all are provided with the looped network sign, each link point in the described looped network is transmitted fast enable.
Wherein, among the described step C control message that carries the looped network sign being carried out the process that transannular transmits is specially:
The transannular node receive from the looped network that is enabled carry the message of looped network sign the time, described message is downloaded, carry out the looped network sign relatively, the looped network sign of port setting is inconsistent if the looped network sign load of described message and the described looped network that is enabled link to each other with the transannular node, peels off this message; Otherwise whether the source address SA that judges described message is identical with the MAC Address of this port, if identical, peels off this message; Transmit otherwise carry out in the ring, carry out when transmitting in the ring, described message is downloaded, the time-to-live ttl field value of revising IP bag wherein is 0XFF, and carries out transannular to other link point that is enabled and transmit.
Wherein, the described control message that carries the looped network sign is the ATD message.
Wherein, the process that among the described step D three layers of IP message is encapsulated as the data message of band network mark will is specially: the retention of the reservation position of certain field in the normal data message is set to non-retention; In the normal data message, add the looped network attribute field, the looped network sign is left in this field.
Wherein, further comprise upload operation to the message of band network mark will, be specially: after node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, if the looped network sign of this data message destination node is identical with the looped network sign of this node, then the value of the ttl field in the data message of band network mark will is obtained by topological database, and this data message is uploaded to looped network; Otherwise the value of ttl field is set to 0XFF in this data message, and this data message is uploaded on the RPR looped network.
Wherein, further comprise, be specially the down operation of the message of band network mark will:
After node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, when having only the MAC Address of this link point identical with destination address da field in the described message, this link point receives data from data flow, give the father of node and do respective handling, and peel off looped network attribute field in the described message.
Wherein, further comprise the operation of passing by, be specially the message of band network mark will:
After node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, judge whether the looped network attribute field in this message is identical with the looped network sign of this node, subtract 1 operation if identical then this node is done the ttl field value in the message; Otherwise the ttl field in the message is not done any operation.
Wherein, further comprise, be specially the rejecting operation of the message of band network mark will:
After the transannular node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, whether the looped network sign of judging message is identical with the looped network sign of transannular node port, if looped network sign difference, message will no longer down be transmitted; Pass by operation otherwise carry out;
After the link point is received data message, if under the MAC Address of this link point situation identical with da field in the described message, message will no longer down be transmitted; Otherwise the sa field in the MAC Address of this link point and the described message relatively, if identical, message will no longer down be transmitted; Otherwise judge whether TTL expires in the described message, if expire, message will no longer down be transmitted, otherwise described message is continued to be forwarded to next node.
The method that the transannular message is transmitted in a kind of RPR net comprises:
A, be that each looped network distributes the looped network sign, is provided with the looped network sign of this node looped network in the link point of each looped network;
B, in the process that the control message transannular that carries the looped network sign is transmitted, the name a person for a particular job medium access control sublayer agreement MAC Address of internet protocol address IP, node of the node in the described message and looped network sign of described each link adds to during two layers of this nodes transmit fast;
C, each node that the looped network sign is set carry out two layers at the three layers of IP message and transmit inquiry fast, hit if table look-up, then with the MAC Address of the purpose IP correspondence of this IP message and data message that the looped network sign is encapsulated into band network mark will two layers of transmission.
Wherein, the process that the looped network sign of this node looped network is set in the link point of each looped network in the described steps A is specially:
A21, transannular node each link point in each looped network that is attached thereto sends the asynchronous time division ATD message that carries the looped network sign;
A22, each link point add the looped network sign according to described message in topological database;
A23, each link ATD message that adds looped network sign load of naming a person for a particular job sends to described transannular node and other link point.
Wherein, the process of among the described step B control message transannular that carries the looped network sign being transmitted is specially:
When the transannular node receives the control message that carries the looped network sign, described message is downloaded, the ttl field value of revising wherein is 0XFF, carries out transannular to other rings and transmits.
Wherein, the described control message that carries the looped network sign is the ATD message.
Wherein, the process that among the described step C three layers of IP message is encapsulated as the data message of band network mark will is specially: the retention of the reservation position of certain field in the normal data message is set to non-retention; In the normal data message, add the looped network attribute field, the looped network sign is left in this field.
Wherein, further comprise to the message of band network mark will upload, download, pass by and reject operation, be specially:
Upload: search two layers and transmit fast, under the situation of hitting of tabling look-up, if the looped network sign of the looped network sign and node that find self is identical, the assignment of TTL is obtained by topological database, the RPR data message is packaged into the unicast data message that has the looped network sign, uploads on the RPR looped network; If the looped network sign of the looped network sign and node that find self is different, the TTL assignment is 0XFF, and the RPR data message is packaged into the unicast data message that has the looped network sign, uploads on the RPR looped network;
Download: after node is received data message, when having only the MAC Address of this link point identical with destination address da field in the described message, this link point receives data from data flow, give the father of node and do respective handling, and peel off looped network attribute field in the described message;
Pass by: after node is received data message, judge whether the looped network attribute field in this message is identical with the looped network sign of this node, subtract 1 operation if identical then this node is done the ttl field value in the message; Otherwise the ttl field in the message is not done any operation;
Reject: after the transannular node is received data message that whether the looped network sign of judging message is identical with the looped network sign of transannular node port, if looped network sign difference, message will no longer down be transmitted, and pass by operation otherwise carry out; After the link point is received data message, if under the MAC Address of this link point situation identical with da field in the described message, message will no longer down be transmitted; Otherwise the sa field in the MAC Address of this link point and the described message relatively, if identical, message will no longer down be transmitted; Otherwise judge whether TTL expires in the described message, if expire, message will no longer down be transmitted, otherwise described message is continued to be forwarded to next node.
The equipment that the transannular message is transmitted fast in a kind of RPR network comprises:
Be arranged on the looped network sign allocation units in the transannular node, be used to each looped network that is connected with the transannular node to distribute the looped network sign, to looped network the unit is set and sends the control message that carries the looped network sign;
The quick forwarding that is arranged in the transannular node enables the unit, is used for sending to the looped network that all link points all are provided with the looped network sign carrying the control message of quick forwarding capability enable information;
Be arranged on the message transannular retransmission unit in the transannular node, be used for that the control message that carries the looped network sign is carried out transannular and transmit;
Be arranged in the transannular node two layers and transmit fast and set up the unit, node IP, node M AC and the looped network sign that is used for carrying the message of looped network sign adds to during two layers of this nodes transmit fast;
The message that is arranged in the transannular node is transformed the unit, be used for that the three layers of IP message is carried out two layers and transmit inquiry fast, hit if table look-up and purpose link point is provided with the looped network sign, then with the MAC Address of the purpose IP correspondence of this IP message and data message that the looped network sign is encapsulated into band network mark will two layers of transmission, otherwise this IP message is encapsulated as the normal data message two layers of transmission;
Be arranged on the message recognition unit in the transannular node, be used for distinguishing the data message of normal data message and band network mark will according to the value of the reservation position of the data message received.
Wherein, described message transannular retransmission unit further comprises looped network sign comparing unit, be used for behind the control message that carries the looped network sign that receives, link to each other with the transannular node looped network sign of port setting of the looped network sign load of described message and the described looped network that is enabled is compared, consistent then judge whether the SA territory of described message is identical with the MAC Address of this port, and comparative result outputed to message process unit, carry out respective handling; Otherwise peel off this message.
The equipment that the transannular message is transmitted fast in a kind of RPR network comprises:
The looped network that is arranged in the link point is provided with the unit, is used for the looped network flag information from the control message of looped network sign allocation units is added in the topological database of this node, adds the looped network flag information in the control message of its transmission;
Be arranged in the link point two layers and transmit fast and set up the unit, node IP, node M AC and the looped network sign that is used for carrying the control message of looped network sign adds to during two layers of this nodes transmit fast;
The message that is arranged in the link point is transformed the unit, be used for that the three layers of IP message is carried out two layers and transmit inquiry fast, hit if table look-up and purpose link point is provided with the looped network sign, then with the MAC Address of the purpose IP correspondence of this IP message and data message that the looped network sign is encapsulated into band network mark will two layers of transmission, otherwise this IP message is encapsulated as the normal data message two layers of transmission;
Be arranged on the message recognition unit in the link point, be used for distinguishing the data message of normal data message and band network mark will according to the value of the reservation position of the data message received.
This shows, the present invention realizes that by interpolation ring sign with to the mode that the normal data message is transformed the RPR based on three layers intersects two layers of message forwarding fast between the RPR link point in the networking, utilize the mode of distributed route to reduce in the networking of phase cross ring requirement to the transannular joint behavior, improve message forwarding efficiency, reduce networking cost.
Description of drawings
Fig. 1 is a RPR ring topological structure.
Fig. 2 is the data message form of basic frame format.
Fig. 3 is the form of the basic controlling byte in the RPR data message.
Fig. 4 is the expansion control byte form in the RPR data message.
Fig. 5 is the form of ATD control message.
Fig. 6 is the form of single load in the ATD frame.
Fig. 7 is a RPR phase cross ring topological structure.
Fig. 8 a is the flow chart that transannular is transmitted embodiment 1 fast.
Fig. 8 b is the flow chart that transannular is transmitted embodiment 2 fast.
Fig. 9 is the ATD message load that the looped network sign is set.
Figure 10 is the ATD message load of adding the looped network sign.
Figure 11 is two layers of structure of transmitting fast.
Figure 12 is that the value that keeps the position in the expansion control field of RPR data message is set to 010 schematic diagram.
Figure 13 is the RPR data message form after the interpolation looped network attribute field.
Figure 14 is that the value of parity position is set to 1 schematic diagram in the basic controlling field of RPR data message.
Figure 15 is quick repeater system schematic diagram
Embodiment
Thought of the present invention is: be to send behind each looped network distribution looped network sign that is attached thereto looped network sign A TD message each link point to described looped network is set by the transannular node, link point adds the looped network sign according to this message, the ATD message that adds looped network sign load is sent to described transannular node and other node, show that the support of this node transmits fast; After the transannular node is received ATD message from the interpolation looped network sign load of each link point, send to transmit fast to the looped network that satisfies condition and enable the ATD message, enable the quick forwarding capability of this looped network; The transannular node carries out the forwarding of ATD message transannular at the looped network that is enabled with between the link point of supporting to transmit fast, transmits fast thereby set up two layers in the described looped network that is enabled; Each node that is enabled in the looped network carries out two layers to three-tier message and transmits inquiry fast, transmits behind the message that then this message is encapsulated as band network mark will that satisfies condition, and transmits otherwise be encapsulated as standard message.
Further specify method of the present invention below in conjunction with embodiment.
Referring to Fig. 8 a, the method that transannular message in the RPR looped network among the embodiment 1 is transmitted is done further detailed description.
Step 801:
The transannular node is that each RPR looped network that is attached thereto distributes the ring sign, and distribution method is specially:
If RPR port and the MAC Address of each RPR looped network that connects with the transannular node are different, then the size of MAC Address is relatively given each RPR looped network distribution looped network sign according to MAC Address order from small to large, and the scope of looped network sign is 1～255;
If RPR port and the MAC Address of each RPR looped network that connects with the transannular node are identical, then the size of port numbers is relatively given different looped network distribution looped network signs according to port numbers order from small to large, and the scope of looped network sign is 1～255.
Also can be at the looped network sign of each RPR looped network of transannular node manual configuration, the scope of looped network sign is (1～255), the sign of different looped networks can not be identical.
Step 802:
The transannular node is realized the link point in described each RPR looped network is carried out the setting of looped network sign by initiatively sending the ATD message that the looped network sign is set to each the RPR looped network that is attached thereto, this ATD message payload format that looped network sign is set as shown in Figure 9, type field value wherein is 8, length value 2, expression is deposited the looped network sign and is enabled to transmit fast control word (Enable) with the attDataUnit of two bytes, looped network sign and enable to transmit fast control word and respectively account for a byte, this moment, the value of looped network sign was the value of distributing in the step 801, and the value that enables to transmit fast control word is 0.
Step 803:
After link point in each RPR looped network is received this message, analytic message information, and upgrade topological database, in topological database, add the looped network flag information; Link point in each RPR looped network can add looped network sign load in its ATD message simultaneously, sends to transannular node and other node in the looped network, to show the quick forwarding capability of this node support.This looped network sign A TD message payload format as shown in figure 10, type field wherein is 9, the length field is 1, expression is deposited the looped network sign with the attDataUnit of a byte.
Step 804:
After RPR transannular node is received looped network sign A TD message from link point in each RPR looped network that is attached thereto, can judge which link point the looped network sign is set, and this information is saved in the topological database, and judge which looped network satisfies the condition that enables of transmitting fast.
Step 805:
Have only when all link points all are provided with the looped network sign on certain the RPR looped network that links to each other with the transannular node, RPR transannular node just can send to transmit fast and enable the ATD message to this RPR looped network, this ATD message payload format as shown in Figure 9, type field value wherein is 8, length value 2, expression is deposited the looped network sign and is enabled to transmit fast control word (Enable) with the attDataUnit of two bytes, looped network sign and the quick control word of transmitting respectively account for a byte, this moment, the value of looped network sign was the looped network sign of described RPR looped network, and the value of transmitting control word fast is non-0 value; Otherwise,, can not be enabled even the link point in some looped network is supported quick forwarding capability yet.
Step 806:
Link in the RPR looped network is checked and accepted after quick forwarding from the transannular node enables the ATD message, and analytic message information enables quick forwarding capability separately.
Step 807:
After the RPR looped network enables quick forwarding capability, when the transannular node receives ATD message from certain looped network, at first this ATD message is downloaded, encircled sign relatively.If the ring sign load of this ATD message is inconsistent with the port ring sign that this looped network links to each other with the transannular node, show that this ATD message is the message that transannular was transmitted, the transannular node will be peeled off this message, and processing finishes; Otherwise whether the source address (sa) of judging the ATD message is identical with the MAC Address of this port.If identical, show that this ATD message is that the transannular node sends to this looped network by this port, peel off message this moment, and processing finishes; Transmit otherwise carry out in the ring, the value of the ttl field in this ATD message is subtracted 1, judge whether that TTL expires, if expire, peel off, otherwise message is transmitted to website in the next ring.Carry out when transmitting in the ring, this ATD message is downloaded, the ttl field value of revising wherein is 0XFF, carries out transannular to other rings that enabled quick forwarding capability and transmits.
Step 808:
Enabled the link point on each RPR looped network behind the quick forwarding capability, can be to resolving from this ring with from the ATD message of other ring, thereby extract node IP and node M AC and three information of looped network sign in this message, and add to during two layers of this nodes transmit fast.Thereby finish two layers of foundation of transmitting fast, these two layers of structures of transmitting fast as shown in figure 11.
Step 809:
Set up two layers of each node of transmitting fast and can carry out two layers at three layers IP message and transmit inquiry fast, whether decision transforms message according to checking result.
Step 810:
Hit and the pairing RPR node of purpose IP is provided with under the situation of looped network sign tabling look-up, the MAC Address and the looped network sign of IP message purpose IP correspondence are encapsulated in the RPR data message of band network mark will, in two layers are encircled, transmit or the transannular transmission by the mode of clean culture.
The normal data message is encapsulated as the process of the datagram of band network mark will: the value that keeps the position in the expansion control field (extendedControl) in the RPR data message is set to 010, can distinguish standard RPR data message and the RPR data message that has the ring sign by the value of this reservation position; In standard RPR data message, add ring sign (RingFlag) field, deposit the looped network sign of purpose IP correspondence in this field.Hit but the RPR node of purpose IP correspondence is not provided with under the situation of looped network sign tabling look-up,, encircle interior forwarding at two layers if this node and destination node in same ring, then are packaged into the IP message RPR unicast data message of standard; Otherwise the RPR broadcasting data messages that the IP message is packaged into standard encircles interior two layers at this and broadcasts forwarding.Under the situation of not hitting of tabling look-up, the IP message is packaged into the broadcasting data messages of standard, encircle interior two layers at this and broadcast forwarding.
The value of the expansion control byte (extendedControl) in the RPR data message is set to 010 schematic diagram as shown in figure 12; RPR data message form after interpolation looped network sign (RingFlag) field as shown in figure 13.
Based on the method for embodiment 1 can also realize to the RPR data message of band network mark will two layers upload, download, pass by and reject operation, be specially:
Upload: the looped network sign is being set but does not enable under the situation of two layers of quick forwarding capability, RPR link point is handled according to the RPR agreement flow process of standard RPR data message, control message, IDLE message and fair algorithm message except that the ATD message, RPR link point adds looped network sign load in its ATD message, RPR transannular node adds in its ATD message looped network sign load and looped network sign load are set;
The looped network sign is being set and is enabling under the situation of two layers of quick forwarding capability, RPR link point is in carrying out the process that data message uploads, at first searching two layers transmits fast, under the situation of hitting of tabling look-up, if the looped network sign of the looped network sign and node that find self is identical, the assignment of TTL is obtained by topological database, and the RPR data message is packaged into the unicast data message that has the looped network sign, uploads on the RPR looped network; If the looped network sign of the looped network sign and node that find self is different, the TTL assignment is 0XFF, and the RPR data message is packaged into the unicast data message that has the looped network sign, uploads on the RPR looped network; Do not hit if table look-up, then be packaged into the RPR broadcasting packet of standard, upload on the RPR looped network; RPR control message, IDLE message and fair message except that the ATD message are handled according to the RPR agreement of standard; RPR link point adds looped network sign load in its ATD message, RPR transannular node adds in its ATD message looped network sign load and looped network sign load are set.
Download: after node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message.For the normal data message, press standard agreement and handle.For the message that has the looped network sign, under the MAC Address of the RPR link point situation identical with da field in the RPR message, node device receives data from the data flow of RPR ring, give the father of node and do respective handling, in giving the process that the upper strata processes, peel off the looped network attribute field in the message.
Pass by: after node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message.For the normal data message, press standard agreement and handle.For the message that has the looped network sign, if the looped network attribute field in the message is identical with the looped network sign of RPR node, at the RPR node is not under this RPR message destination node and the premature situation of TTL, to continue to be forwarded to next node by way of the RPR of this node message, this node was done the ttl field value in the heading and was subtracted 1 operation this moment; For the message that has the looped network sign, if the looped network sign is different with the looped network sign of RPR node, will continue to be forwarded to next node by way of the RPR of this node message, this moment, this node was not done any operation to the ttl field in the heading.
Reject: after the transannular node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, whether the looped network sign of judging message is identical with the looped network sign of transannular node port, if looped network sign difference, message will no longer down be transmitted; Pass by operation otherwise carry out.After the link point is received data message, if under the MAC Address of this link point situation identical with da field in the described message, message will no longer down be transmitted; Otherwise the sa field in the MAC Address of this link point and the described message relatively, if identical, message will no longer down be transmitted; Otherwise judge whether TTL expires in the described message, if expire, message will no longer down be transmitted, otherwise described message is continued to be forwarded to next node.
Generally for unicast traffic, source node is carried out upload operation to message, and destination node is carried out this message and downloaded and reject operation, and other websites are carried out and passed by operation, support transannular to transmit for the data message of clean culture, and other messages do not support transannular to transmit; For broadcast traffic, all nodes all can be carried out down operation, but the ATD message that has the looped network sign that has only the non-transannular node device of RPR to send supports transannular to transmit; For flux of multicast, handling process is similar with clean culture.
In the step 802 of embodiment 1, ring sign (RingFlag) field length is 1 byte, and in the actual conditions, according to the difference of the scope of looped network sign, ring sign (RingFlag) field length also can be a plurality of bytes.
In the step 802 of embodiment 1, the value of type field can be the arbitrary value between 8～1022.
In the step 803 of embodiment 1, the value of type field can be the arbitrary value that is different from ATD message load type field value in the step 802 between 8～1022.
In the step 808 of embodiment 1, being set to 010 by the value that keeps the position in the expansion control field in the RPR data message distinguishes standard RPR data message and has the RPR data message that ring indicates, in the actual conditions, value that also can this reservation position is set to other value, as: 001,011,100,101,110,111, as long as the value of setting be different from the retention 000 of this reservation position can.
In the step 808 of embodiment 1, by the value setting that keeps the position in the expansion control field in the RPR data message is distinguished standard RPR data message and is had the RPR data message that ring indicates, in the actual conditions, also can the value of parity position in the basic controlling field (baseControl) in the RPR data message be provided with, to distinguish standard RPR data message and to have the RPR data message that ring indicates, specific practice is: the value of parity position is set to 1, as shown in figure 14.RPR data message parity for standard gets 0, and parity can be got 1 for the RPR data message that has the looped network sign, so also can reach the purpose of distinguishing two kinds of RPR data messages.
In the actual conditions, if know in advance in the looped network that each link point can both be provided with the looped network sign and promptly all support quick forwarding capability, then after each the link point to this looped network is provided with the looped network sign, need not transmit fast this looped network and enable, just can carry out a series of follow-up processes such as ATD message transannular forwarding, describe below by 2 pairs of these methods of embodiment.
Embodiment 2:
Referring to Fig. 8 b, the method that transannular message in the RPR looped network among the embodiment 2 is transmitted is done further detailed description.
Step 811:
The transannular node is that each RPR looped network that is attached thereto distributes the ring sign, and distribution method is specially:
If RPR port and the MAC Address of each RPR looped network that connects with the transannular node are different, then the size of MAC Address is relatively given each RPR looped network distribution looped network sign according to MAC Address order from small to large, and the scope of looped network sign is 1～255;
If RPR port and the MAC Address of each RPR looped network that connects with the transannular node are identical, then the size of port numbers is relatively given different looped network distribution looped network signs according to port numbers order from small to large, and the scope of looped network sign is 1～255.
Also can be at the looped network sign of each RPR looped network of transannular node manual configuration, the scope of looped network sign is (1～255), the sign of different looped networks can not be identical.
Step 812:
The transannular node is realized the link point in described each RPR looped network is carried out the setting of looped network sign by initiatively sending the ATD message that the looped network sign is set to each the RPR looped network that is attached thereto, this ATD message payload format that looped network sign is set as shown in Figure 9, type field value wherein is 8, length value 1, expression is deposited the looped network sign with the attDataUnit of 1 byte, and this moment, the value of looped network sign was the value of distributing in the step 811.
Step 813:
Each link point adds the looped network sign according to the ATD message of receiving that the looped network sign is set in topological database, and each link ATD message that adds looped network sign load of naming a person for a particular job sends to described transannular node and other link point.
Step 814:
When the transannular node receives ATD message from certain looped network this ATD message is downloaded, the ttl field value of revising wherein is 0XFF, carries out transannular to other rings and transmits.
Step 815:
Link point on each RPR looped network can be to resolving from this ring with from the ATD message of other ring, thereby extract node IP and node M AC and three information of looped network sign in this message, and add to during two layers of this nodes transmit fast.Thereby finish two layers of foundation of transmitting fast, these two layers of structures of transmitting fast as shown in figure 11.
Step 816:
Set up two layers of each node of transmitting fast and can carry out two layers at three layers IP message and transmit inquiry fast, whether decision transforms message according to checking result.Under the situation of hitting of tabling look-up, the MAC Address and the looped network sign of IP message purpose IP correspondence is encapsulated in the RPR data message of band network mark will, in two layers are encircled, transmit or transannular sends by the mode of clean culture.
The process of datagram that the normal data message is encapsulated as band network mark will is the same with process among the embodiment 1, no longer repeats here.Based on the method for embodiment 2 can also realize to the RPR data message of band network mark will two layers upload, download, pass by and reject operation, be specially:
Upload: RPR link point is in carrying out the process that data message uploads, at first searching two layers transmits fast, under the situation of hitting of tabling look-up, if the looped network sign of the looped network sign and node that find self is identical, the assignment of TTL is obtained by topological database, the RPR data message is packaged into the unicast data message that has the looped network sign, uploads on the RPR looped network; If the looped network sign of the looped network sign and node that find self is different, the TTL assignment is 0XFF, and the RPR data message is packaged into the unicast data message that has the looped network sign, uploads on the RPR looped network.
Download: after node is received data message, under the MAC Address of the RPR link point situation identical with da field in the RPR message, node device receives data from the data flow of RPR ring, give the father of node and do respective handling, in giving the process that the upper strata processes, peel off the looped network attribute field in the message.
Pass by: after node is received data message, if the looped network attribute field in the message is identical with the looped network sign of RPR node, at the RPR node is not under this RPR message destination node and the premature situation of TTL, to continue to be forwarded to next node by way of the RPR of this node message, this node was done the ttl field value in the heading and was subtracted 1 operation this moment; For the message that has the looped network sign, if the looped network sign is different with the looped network sign of RPR node, will continue to be forwarded to next node by way of the RPR of this node message, this moment, this node was not done any operation to the ttl field in the heading.
Reject: the transannular node will judge whether the looped network sign of message is identical with the looped network sign of transannular node port after receiving data message, if looped network sign difference, message will no longer down be transmitted; Pass by operation otherwise carry out.After the link point is received data message, if under the MAC Address of this link point situation identical with da field in the described message, message will no longer down be transmitted; Otherwise the sa field in the MAC Address of this link point and the described message relatively, if identical, message will no longer down be transmitted; Otherwise judge whether TTL expires in the described message, if expire, message will no longer down be transmitted, otherwise described message is continued to be forwarded to next node.
Generally for unicast traffic, source node is carried out upload operation to message, and destination node is carried out this message and downloaded and reject operation, and other websites are carried out and passed by operation, support transannular to transmit for the data message of clean culture, and other messages do not support transannular to transmit; For broadcast traffic, all nodes all can be carried out down operation, but the ATD message that has the looped network sign that has only the non-transannular node device of RPR to send supports transannular to transmit; For flux of multicast, handling process is similar with clean culture.
In embodiment 2, to the method to set up of ring sign (RingFlag) field length, to the setting of payload format in each ATD message, the method that the data message is transformed all with embodiment 1 in the same, no longer repetition here.
Based on the method that transannular message in the described RPR network is transmitted, the invention allows for the equipment that the transannular message is transmitted in a kind of RPR network.
Referring to Figure 15, the quick forwarding unit of transannular message comprises in the RPR network: looped network sign allocation units 1501 are used to each looped network to distribute the looped network sign; Looped network is provided with unit 1503, is used to be provided with the looped network sign of link point; Transmit fast and enable unit 1502, be used for the looped network that all link points all are provided with the looped network sign transmitted fast and enable; In the looped network 1510 that fast forwarding capability is enabled, this system further comprises: message transannular retransmission unit 1504 is used between looped network 1510 that is enabled and link point that the looped network sign is set the control message that carries the looped network sign being carried out the transannular forwarding; Transmit fast for two layers and set up unit 1505, node IP, node M AC and the looped network sign that is used for carrying the message of looped network sign adds to during two layers of this nodes transmit fast; Message is transformed unit 1506, and the message that is used for satisfying quick forwarding condition is encapsulated as the data message of band network mark will; Message recognition unit 1507 is used for the data message of criterion of identification data message and band network mark will.
Looped network sign allocation units 1501 are arranged in the transannular node 1508, for each looped network that is connected with transannular node 1508 distributes the looped network sign, to looped network unit 1503 transmissions are set and carry the ATD message of looped network sign and enable information.
Looped network sign allocation units 1501 further comprise RPR port and MAC Address comparing unit, and the RPR port and the MAC Address that are used for each looped network that comparison is connected with the transannular node compare; Also comprise the sign allocation units,, distribute the looped network sign according to the comparative result of RPR port and MAC Address comparing unit; Also comprise and extraneous interface of communicating by letter, be used for the looped network sign of each looped network of manual configuration.
Looped network is provided with unit 1503 and is arranged in the link point 1509, in topological database, add the looped network sign according to the ATD message of receiving that carries looped network sign and enable information, the ATD message that adds looped network sign load is sent to described transannular node 1508 and other link point 1509.
Quick forwarding enables unit 1502 and is arranged in the link point 1509, and the ATD message of looped network sign and enable information is carried in looped network 1510 transmissions that all are provided with the looped network sign to all link points 1509.
Message transannular retransmission unit 1504 is arranged in the transannular node 1508.
Message transannular retransmission unit 1504 further comprises looped network sign comparing unit, with receive from the looped network that is enabled carry the control message of looped network sign the time, link to each other with the transannular node looped network sign of port setting of the looped network sign load of described message and the described looped network that is enabled is compared, consistent then judge whether the SA territory of described message is identical with the MAC Address of this port, and comparative result is exported; Otherwise processing finishes; Also comprise message process unit, message is handled according to the output result of looped network sign comparing unit.
Transmit fast for two layers and set up unit 1505 and be arranged in transannular node 1508 and the link point 1509.
Message is transformed unit 1506 and is arranged in transannular node 1508 and the link point 1509, carry out two layers at the three layers of IP message and transmit inquiry fast, hit if table look-up and purpose link point 1509 is provided with the looped network sign, then this message is encapsulated as the data message of band network mark will.
Message recognition unit 1507 is arranged in transannular node 1508 and the link point 1509, distinguishes the data message of normal data message and band network mark will according to the value of the reservation position in the data message of receiving, and the result is exported to node processing.
In the said equipment, looped network sign allocation units 1501 are transmitted fast and are enabled unit 1502, and message transannular retransmission unit 1504 and two layers are transmitted fast and set up unit 1505 and also can realize by increasing software function based on the existing network hardware device.
By embodiment as can be seen the present invention realize that by the mode of adding the looped network sign RPR based on three layers intersects two layers of message forwarding fast between the RPR link point in the networking, utilize the mode of distributed route to reduce in the networking of phase cross ring requirement to the transannular joint behavior, improve message forwarding efficiency, reduce networking cost.
Claims (19)
1, the method that the transannular message is transmitted in a kind of RPR net is characterized in that, comprising:
A, be that each looped network distributes the looped network sign, is provided with the looped network sign of this looped network in the link point of each looped network;
B, the looped network that all link points all are provided with the looped network sign are transmitted fast and are enabled;
C, in the process that the control message transannular that carries the looped network sign is transmitted, the name a person for a particular job medium access control sublayer agreement MAC Address of internet protocol address IP, node of the node in the described message and looped network sign of each link in the looped network that is enabled adds to during two layers of this nodes transmit fast;
Each node carries out two layers at the three layers of IP message and transmits inquiry fast in D, the looped network that is enabled, hit if table look-up and purpose link point is provided with the looped network sign, then with the MAC Address of the purpose IP correspondence of this IP message and data message that the looped network sign is encapsulated into band network mark will two layers of transmission.
2, method according to claim 1 is characterized in that, the process that the link point in the described steps A in each looped network is provided with the looped network sign of this node is specially:
A11, transannular node each link point in each looped network that is attached thereto sends the asynchronous time division ATD message that carries the looped network sign;
A12, each link point add the looped network sign according to described message in topological database;
A13, each link ATD message that adds looped network sign load of naming a person for a particular job sends to described transannular node and other link point.
3, method according to claim 1 is characterized in that, described step B is specially:
The transannular node carries the ATD message of enable information to the looped network transmission that all link points all are provided with the looped network sign, each link point in the described looped network is transmitted fast enable.
4, method according to claim 1 is characterized in that, among the described step C control message that carries the looped network sign is carried out the process that transannular transmits and is specially:
The transannular node receive from the looped network that is enabled carry the message of looped network sign the time, described message is downloaded, carry out the looped network sign relatively, the looped network sign of port setting is inconsistent if the looped network sign load of described message and the described looped network that is enabled link to each other with the transannular node, peels off this message; Otherwise whether the source address SA that judges described message is identical with the MAC Address of this port, if identical, peels off this message; Transmit otherwise carry out in the ring, carry out when transmitting in the ring, described message is downloaded, the time-to-live ttl field value of revising IP bag wherein is 0XFF, and carries out transannular to other link point that is enabled and transmit.
According to claim 1 or 4 described methods, it is characterized in that 5, the described control message that carries the looped network sign is the ATD message.
6, method according to claim 1 is characterized in that, the process that among the described step D three layers of IP message is encapsulated as the data message of band network mark will is specially: the retention of the reservation position of certain field in the normal data message is set to non-retention; In the normal data message, add the looped network attribute field, the looped network sign is left in this field.
7, method according to claim 1, it is characterized in that, further comprise upload operation to the message of band network mark will, be specially: after node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, if the looped network sign of this data message destination node is identical with the looped network sign of this node, then the value of the ttl field in the data message of band network mark will is obtained by topological database, and this data message is uploaded to the RPR looped network; Otherwise the value of ttl field is set to 0XFF in this data message, and this data message is uploaded on the RPR looped network.
8, method according to claim 1 is characterized in that, further comprises the down operation of the message of band network mark will, is specially:
After node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, when having only the MAC Address of this link point identical with destination address da field in the described message, this link point receives data from data flow, give the father of node and do respective handling, and peel off looped network attribute field in the described message.
9, method according to claim 1 is characterized in that, further comprises the operation of passing by to the message of band network mark will, is specially:
After node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, judge whether the looped network attribute field in this message is identical with the looped network sign of this node, subtract 1 operation if identical then this node is done the ttl field value in the message; Otherwise the ttl field in the message is not done any operation.
10, method according to claim 1 is characterized in that, further comprises the rejecting operation of the message of band network mark will, is specially:
After the transannular node is received data message, distinguish the data message of normal data message and band network mark will according to the value of the reservation position in this message, for the data message that has the looped network sign, whether the looped network sign of judging message is identical with the looped network sign of transannular node port, if looped network sign difference, message will no longer down be transmitted; Pass by operation otherwise carry out;
After the link point is received data message, if under the MAC Address of this link point situation identical with da field in the described message, message will no longer down be transmitted; Otherwise the sa field in the MAC Address of this link point and the described message relatively, if identical, message will no longer down be transmitted; Otherwise judge whether TTL expires in the described message, if expire, message will no longer down be transmitted, otherwise described message is continued to be forwarded to next node.
11, the method that the transannular message is transmitted in a kind of RPR net is characterized in that, comprising:
A, be that each looped network distributes the looped network sign, is provided with the looped network sign of this node looped network in the link point of each looped network;
B, in the process that the control message transannular that carries the looped network sign is transmitted, the name a person for a particular job medium access control sublayer agreement MAC Address of internet protocol address IP, node of the node in the described message and looped network sign of described each link adds to during two layers of this nodes transmit fast;
C, each node that the looped network sign is set carry out two layers at the three layers of IP message and transmit inquiry fast, hit if table look-up, then with the MAC Address of the purpose IP correspondence of this IP message and data message that the looped network sign is encapsulated into band network mark will two layers of transmission.
12, method according to claim 11 is characterized in that, the process that the looped network sign of this node looped network is set in the link point of each looped network in the described steps A is specially:
A21, transannular node each link point in each looped network that is attached thereto sends the asynchronous time division ATD message that carries the looped network sign;
A22, each link point add the looped network sign according to described message in topological database;
A23, each link ATD message that adds looped network sign load of naming a person for a particular job sends to described transannular node and other link point.
13, method according to claim 11 is characterized in that, the process of among the described step B control message transannular that carries the looped network sign being transmitted is specially:
When the transannular node receives the control message that carries the looped network sign, described message is downloaded, the ttl field value of revising wherein is 0XFF, carries out transannular to other rings and transmits.
According to claim 11 or 13 described methods, it is characterized in that 14, the described control message that carries the looped network sign is the ATD message.
15, method according to claim 11, it is characterized in that the process that among the described step C three layers of IP message is encapsulated as the data message of band network mark will is specially: the retention of the reservation position of certain field in the normal data message is set to non-retention; In the normal data message, add the looped network attribute field, the looped network sign is left in this field.
16, method according to claim 11 is characterized in that, further comprise to the message of band network mark will upload, download, pass by and reject operation, be specially:
Upload: search two layers and transmit fast, under the situation of hitting of tabling look-up, if the looped network sign of the looped network sign and node that find self is identical, the assignment of TTL is obtained by topological database, the RPR data message is packaged into the unicast data message that has the looped network sign, uploads on the RPR looped network; If the looped network sign of the looped network sign and node that find self is different, the TTL assignment is 0XFF, and the RPR data message is packaged into the unicast data message that has the looped network sign, uploads on the RPR looped network;
Download: after node is received data message, when having only the MAC Address of this link point identical with destination address da field in the described message, this link point receives data from data flow, give the father of node and do respective handling, and peel off looped network attribute field in the described message;
Pass by: after node is received data message, judge whether the looped network attribute field in this message is identical with the looped network sign of this node, subtract 1 operation if identical then this node is done the ttl field value in the message; Otherwise the ttl field in the message is not done any operation;
Reject: after the transannular node is received data message that whether the looped network sign of judging message is identical with the looped network sign of transannular node port, if looped network sign difference, message will no longer down be transmitted, and pass by operation otherwise carry out; After the link point is received data message, if under the MAC Address of this link point situation identical with da field in the described message, message will no longer down be transmitted; Otherwise the sa field in the MAC Address of this link point and the described message relatively, if identical, message will no longer down be transmitted; Otherwise judge whether TTL expires in the described message, if expire, message will no longer down be transmitted, otherwise described message is continued to be forwarded to next node.
17, the equipment that the transannular message is transmitted fast in a kind of RPR network is characterized in that, comprising:
Be arranged on the looped network sign allocation units in the transannular node, be used to each looped network that is connected with the transannular node to distribute the looped network sign, to looped network the unit is set and sends the control message that carries the looped network sign;
The quick forwarding that is arranged in the transannular node enables the unit, is used for sending to the looped network that all link points all are provided with the looped network sign carrying the control message of quick forwarding capability enable information;
Be arranged on the message transannular retransmission unit in the transannular node, be used for that the control message that carries the looped network sign is carried out transannular and transmit;
Be arranged in the transannular node two layers and transmit fast and set up the unit, node IP, node M AC and the looped network sign that is used for carrying the message of looped network sign adds to during two layers of this nodes transmit fast;
The message that is arranged in the transannular node is transformed the unit, be used for that the three layers of IP message is carried out two layers and transmit inquiry fast, hit if table look-up and purpose link point is provided with the looped network sign, then with the MAC Address of the purpose IP correspondence of this IP message and data message that the looped network sign is encapsulated into band network mark will two layers of transmission, otherwise this IP message is encapsulated as the normal data message two layers of transmission;
Be arranged on the message recognition unit in the transannular node, be used for distinguishing the data message of normal data message and band network mark will according to the value of the reservation position of the data message received.
18, equipment according to claim 17, it is characterized in that, described message transannular retransmission unit further comprises looped network sign comparing unit, be used for behind the control message that carries the looped network sign that receives, link to each other with the transannular node looped network sign of port setting of the looped network sign load of described message and the described looped network that is enabled is compared, consistent then judge whether the SA territory of described message is identical with the MAC Address of this port, and comparative result outputed to message process unit, carry out respective handling; Otherwise peel off this message.
19, the equipment that the transannular message is transmitted fast in a kind of RPR network is characterized in that, comprising:
The looped network that is arranged in the link point is provided with the unit, is used for the looped network flag information from the control message of looped network sign allocation units is added in the topological database of this node, adds the looped network flag information in the control message of its transmission;
Be arranged in the link point two layers and transmit fast and set up the unit, node IP, node M AC and the looped network sign that is used for carrying the control message of looped network sign adds to during two layers of this nodes transmit fast;
The message that is arranged in the link point is transformed the unit, be used for that the three layers of IP message is carried out two layers and transmit inquiry fast, hit if table look-up and purpose link point is provided with the looped network sign, then with the MAC Address of the purpose IP correspondence of this IP message and data message that the looped network sign is encapsulated into band network mark will two layers of transmission, otherwise this IP message is encapsulated as the normal data message two layers of transmission;
Be arranged on the message recognition unit in the link point, be used for distinguishing the data message of normal data message and band network mark will according to the value of the reservation position of the data message received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100723805A CN100481819C (en) | 2006-04-14 | 2006-04-14 | Method and apparatus for over-ring message retransmitting in elastic grouped ring network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100723805A CN100481819C (en) | 2006-04-14 | 2006-04-14 | Method and apparatus for over-ring message retransmitting in elastic grouped ring network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1852260A CN1852260A (en) | 2006-10-25 |
| CN100481819C true CN100481819C (en) | 2009-04-22 |
Family
ID=37133729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100723805A Active CN100481819C (en) | 2006-04-14 | 2006-04-14 | Method and apparatus for over-ring message retransmitting in elastic grouped ring network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100481819C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103067999B (en) * | 2009-01-23 | 2015-12-16 | 雷凌科技股份有限公司 | Package transmitting method and device |
| CN102215165B (en) * | 2011-05-27 | 2015-09-09 | 杭州迪普科技有限公司 | A kind of message processing method of tangent ring networks and Ethernet switch |
| CN103888189B (en) * | 2014-03-03 | 2016-08-17 | 浙江大学 | It is applicable to the single fiber looped network means of communication of extensive power electronic system |
| CN107547331A (en) * | 2017-09-25 | 2018-01-05 | 新华三技术有限公司 | The forwarding state control method and device of RPR nodes in RPR intersecting rings |
| CN114978804A (en) * | 2021-02-26 | 2022-08-30 | 华为技术有限公司 | Method and communication device for transmitting data |
-
2006
- 2006-04-14 CN CNB2006100723805A patent/CN100481819C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 弹性分组多环网的跨环实现. 张焕国，兰凯民，张家波，涂艳丽.重庆邮电学院学报，第17卷第4期. 2005 |
| 弹性分组多环网的跨环实现. 张焕国，兰凯民，张家波，涂艳丽.重庆邮电学院学报，第17卷第4期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1852260A (en) | 2006-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100563251C (en) | A kind of method for establishing two-way transmitted inspecting session | |
| EP2100406B1 (en) | Method and apparatus for implementing multicast routing | |
| US7860094B2 (en) | Multicast routing method and apparatus for routing multicast packet | |
| CN101286867B (en) | Software updating method and system of network equipment | |
| CN102281181B (en) | Method, device and system for realizing multicast forwarding in EVB (Extended VLAN (Virtual Local Area Network) Bridge) equipment | |
| WO2022062506A1 (en) | Data processing method and apparatus, storage medium, and electronic apparatus | |
| CN101247253A (en) | Multi-cast transmission method based on virtual distribution network in IP network | |
| CN104022936B (en) | A kind of tunnel establishing method and device | |
| CN101848171A (en) | Data transmission method based on GRE tunnel, device and system | |
| CN102368727A (en) | Crossed IP network TRILL network communication method, system thereof and devices | |
| CN100481819C (en) | Method and apparatus for over-ring message retransmitting in elastic grouped ring network | |
| CN102185766A (en) | Unicast forwarding method and forwarding equipment for responding messages by DHCP (Dynamic host configuration protocol) server | |
| CN106685828B (en) | A kind of message transmitting method and device | |
| CN101499951B (en) | Tunnel configuration method, virtual access node, virtual edge node and system | |
| CN103023773A (en) | Method, device and system for forwarding message in multi-topology network | |
| CN107294859B (en) | Information transmission method, device and system | |
| CN102420772B (en) | Tunnel message transmission and receiving methods and devices | |
| JP2002077213A (en) | System for accessing subscriber's radio | |
| EP1699169A1 (en) | Wireless base station, wireless mobile device, and wireless access network for reducing signalling traffic | |
| CN105591897B (en) | The MAC Address synchronous method and device of TRILL network | |
| CN102104533B (en) | Method for optimizing RRPP (rapid ring protection protocol) single ring network data transmitting path and ring network node | |
| CN106533503A (en) | Method and device for power line network communication | |
| CN101325536A (en) | Base station of WiMAX system, method and apparatus for controlling transmission of multicast data packet in gateway | |
| CN104023317A (en) | Low-power-consumption multicast routing network and multicast routing method thereof | |
| CN100479457C (en) | Implementation method for transferring data in virtual private network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: NEW H3C TECHNOLOGIES Co.,Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: HANGZHOU H3C TECHNOLOGIES Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230616 Address after: 310052 11th Floor, 466 Changhe Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: H3C INFORMATION TECHNOLOGY Co.,Ltd. Address before: 310052 Changhe Road, Binjiang District, Hangzhou, Zhejiang Province, No. 466 Patentee before: NEW H3C TECHNOLOGIES Co.,Ltd. |
|
| TR01 | Transfer of patent right |