CN104579982A - Second-layer multicast data message forwarding method and device - Google Patents
Second-layer multicast data message forwarding method and device Download PDFInfo
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Abstract
The invention discloses a second-layer multicast data message forwarding method and device. The method is applied to a node, connected with a multicast source, in a resilient packet ring (RPR) network. The method includes the steps that multicast destination nodes are determined; multicast data messages are received; optical forwarding routes to the multicast destination nodes are determined according to collected topological information; RPR multicast messages packaging the multicast data messages are sent according to the optimal forwarding routes; target RPR MAC addresses sending the RPR multicast messages on the optimal forwarding routes comprise node information of the multicast destination nodes on the optimal forwarding routes, and the time to live (TTL) of the RPR multicast messages sent on the optical forwarding routes is equal to the hot count of the farthest multicast destination nodes on the optical forwarding routes. By means of the second-layer multicast data message forwarding method and device, the redundancy flow on the RPR can be reduced, and the bandwidth utilization rate is increased.
Description
Technical field
The present invention relates to network communication technology field, particularly a kind of Layer 2 Multicast data message forwarding method and device.
Background technology
RPR (Resilient Packet Ring, Resilient Packet Ring) be a kind of novel MAC (Media AccessControl, media interviews control) agreement, SONET (Synchronous Optical Network can be run on, Synchronous Optical Network)/SDH (Synchronous Digital Hierarchy, synchronous digital hierarchy), DWDM (Dense Wavelength Division Multiplexing, level of confidentiality wavelength division multiplexing) and Ethernet on, for broadband IP MAN operator provides flexible and efficient networking plan.
RPR adopts the encapsulation of RPR mac layer frame to realize the transparent transmission of Ethernet Over RPR.The ring structure of RPR and topological protection mechanism to the repeating process of institute's bearer traffic and access device transparent.
RPR adopts reverse twin nuclei, and data forward among the nodes along looped network
In the existing RPR network shown in Fig. 1, RPR network packet is containing node 101-105.Node 101-105 collects RPR network topology, calculates broadcast forward-path, calculates outgoing interface corresponding to the RPR MAC Address of other nodes and in RPR network, sends the outbound port of RPR broadcasting packet.According to existing RPR agreement, multicast is that broadcast forwards on RPR ring, and when multicast message is encapsulated as RPR multicast and broadcast message by node 101, whole RPR network is broadcasted, on RPR ring, all nodes all can receive RPR multicast and broadcast message.For the node that there is terminal, after the multicast data message decapsulation encapsulate RPR message, send the E multicast data message after decapsulation by the member port in the multicast forward table of coupling.And after the multicast data message decapsulation not having the node of terminal to be encapsulated by RPR broadcasting packet, do not match multicast forward table, abandon the multicast data message after decapsulation, the chip transfer capability of this pattern to equipment is a kind of consumption.
Summary of the invention
The object of the present invention is to provide a kind of Layer 2 Multicast data message forwarding method and device, the RPR multicast message of bear multicast data message is mail to the node that there is multicast reception end respectively, decreases the redundant flow on RPR ring, improve bandwidth availability ratio.
For achieving the above object, the invention provides a kind of Layer 2 Multicast data message forwarding method, the method is applied to the node be connected with multicast source in RPR network, and method comprises: determine each multicast destination node; Receiving multicast data message; The optimum forward-path of each multicast destination node is determined according to the topology information of collecting; The RPR multicast message encapsulating multicast data message is sent according to each optimum forward-path; The object RPRMAC address of the RPR multicast message wherein each optimum forward-path sent comprises the multicast destination node information on each optimum forward-path and the life span TTL of the RPR multicast message that each optimum forward-path sends to equal to arrive on each optimum forward-path the jumping figure of multicast destination node farthest.
For achieving the above object, present invention also offers a kind of Layer 2 Multicast data message forwarding method, be applied to the node connecting multicast receiving terminal in RPR network, the method comprises: receive the RPR multicast message encapsulating multicast data message; Determine that the RPRMAC address, source of the RPR multicast message received comprises this nodal information; Copy the RPR multicast message received, the RPR multicast message copied is descapsulated into multicast data message; The member port of multicast data message after decapsulation by multicast forward table is sent; The life span TTL receiving the RPR multicast message encapsulating multicast data message is subtracted 1, when amended TTL is greater than 0, sends from the another port of this node and receive RPR multicast message; When amended TTL equals 0, stop sending by another port the RPR multicast message received.
For achieving the above object, present invention also offers a kind of Layer 2 Multicast data message forwarding device, the node that this application of installation is connected with multicast source in RPR network, device comprises: destination node confirmation unit, for determining each multicast destination node; First receiving element, for receiving multicast data message; Path forwards confirmation unit, for determining the optimum forward-path of each multicast destination node according to the topology information of collecting; First transmitting element, for sending according to each optimum forward-path the RPR multicast message encapsulating multicast data message; The object RPR MAC Address of the RPR multicast message wherein each optimum forward-path sent comprises the multicast destination node information on each optimum forward-path and the life span TTL of the RPR multicast message that each optimum forward-path sends to equal to arrive on each optimum forward-path the jumping figure of multicast destination node farthest.
For achieving the above object, present invention also offers a kind of Layer 2 Multicast data message forwarding device, be applied to the node connecting multicast receiving terminal in RPR network, device comprises: the second Transmit-Receive Unit, for receiving the RPR multicast message encapsulating multicast data message; Second processing unit, for determining that the source RPR MAC Address of the RPR multicast message received comprises this nodal information; Copy the RPR multicast message received, the RPR multicast message copied is descapsulated into multicast data message; The member port of multicast data message after decapsulation by multicast forward table is sent; The life span TTL receiving the RPR multicast message encapsulating multicast data message is subtracted 1, when amended TTL is greater than 0, sends from the another port of this node and receive RPR multicast message; When amended TTL equals 0, stop sending by another port the RPR multicast message received.
To sum up, beneficial effect of the present invention is, by determining the optimum forward-path of each multicast destination node, the RPR multicast message of bear multicast data message is mail to multicast destination node respectively, and the object RPR MAC Address of the RPR multicast message that each optimum forward-path sends comprises the information of the multicast order node on each optimum forward-path and the life span TTL of the RPR multicast message that each optimum forward-path sends to equal to arrive on each optimum forward-path the jumping figure of multicast destination node farthest.Avoid in prior art and the RPR broadcasting packet of bear multicast data message is flooded in RPR network, thus decrease the redundant flow on RPR ring, improve bandwidth availability ratio.And other nodes of RPR network to receive RPR multicast message be decapsulation as required, the member port searching multicast forward table carries out local multicast data message forwarding, saves the process resource of RPR process chip.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing RPR network.
Fig. 2 A is that the present invention provides a kind of Layer 2 Multicast data message forwarding method in an embodiment, is applied to the schematic flow sheet of the node be connected with multicast source in RPR network.
Fig. 2 B be the present invention still another embodiment provides a kind of Layer 2 Multicast data message forwarding method, be applied to the schematic flow sheet of the node connecting multicast receiving terminal in RPR network.
Fig. 3 is the application networking scene schematic diagram of the embodiment of the present invention.
Fig. 4 is the extension frame structure schematic diagram of RPR encapsulation.
Fig. 5 is embodiment of the present invention multicast data packet forwarding path schematic diagram.
Fig. 6 is the apparatus structure schematic diagram that the embodiment of the present invention is applied to the node be connected with multicast source in RPR network.
Fig. 7 is the apparatus structure schematic diagram that the embodiment of the present invention is applied to the node connecting multicast receiving terminal in RPR network.
Embodiment
Referring to accompanying drawing, the embodiment of the present invention is described in further detail.
As shown in Figure 2 A, the present invention provides a kind of Layer 2 Multicast data message forwarding method in an embodiment, and be applied to the node be connected with multicast source in RPR network, the method comprises the following steps:
Step 201, determine each multicast destination node;
Wherein, determine that the method for multicast destination node comprises: receive the RPR broadcasting packet encapsulating IGMP (Internet GroupManagement Protocol, IGMP) report message; Subport number corresponding for the source RPR MAC Address encapsulating IGMP report message RPR broadcasting packet is joined the subport collection of multicast forward table; Wherein encapsulate the site identity of the corresponding multicast destination node of source RPR MAC Address of IGMP report message RPR broadcasting packet, the corresponding subport number of site identity.
Step 202, receiving multicast data message;
Step 203, determine the optimum forward-path of each multicast destination node according to the topology information of collecting;
Wherein, the method for optimum forward-path determined to each multicast destination node according to the topology information of collecting comprises: subport collection is divided into the first different port subset and the combination of the second port subset by east orientation path and west to path; The jumping figure arriving the first port subset node farthest in each combination is added with the jumping figure arriving node farthest in the second port subset, calculates total jumping figure of each combination; Using the forward-path of combination correspondence minimum for total jumping figure as optimum forward-path.
Step 204, send the RPR multicast message encapsulating multicast data message according to each optimum forward-path; The object RPR MAC Address of the RPR multicast message wherein each optimum forward-path sent comprises the multicast destination node information on each optimum forward-path and the life span TTL of the RPR multicast message that each optimum forward-path sends to equal to arrive on each optimum forward-path the jumping figure of multicast destination node farthest.
According to said method, by determining the optimum forward-path of each multicast destination node, the RPR multicast message of bear multicast data message is mail to multicast destination node respectively, and the object RPR MAC Address of the RPR multicast message that each optimum forward-path sends comprises the information of the multicast order node on each optimum forward-path and the life span TTL of the RPR multicast message that each optimum forward-path sends to equal to arrive on each optimum forward-path the jumping figure of multicast destination node farthest.Avoid in prior art and the RPR broadcasting packet of bear multicast data message is flooded in RPR network, thus decrease the redundant flow on RPR ring, improve bandwidth availability ratio.
As shown in Figure 2 B, the present invention still another embodiment provides a kind of Layer 2 Multicast data message forwarding method, and be applied to the node connecting multicast receiving terminal in RPR network, the method comprises the following steps:
Step 211, reception encapsulate the RPR multicast message of multicast data message;
Step 212, determine that the source RPR MAC Address of the RPR multicast message received comprises this nodal information;
Step 213, copy the RPR multicast message received, the RPR multicast message copied is descapsulated into multicast data message;
Step 214, the member port of the multicast data message after decapsulation by multicast forward table to be sent;
Step 215, the life span TTL receiving the RPR multicast message encapsulating multicast data message is subtracted 1, when amended TTL is greater than 0, send from the another port of this node and receive RPR multicast message; When amended TTL equals 0, stop sending by another port the RPR multicast message received.
In the step 212, if determine that the source RPR MAC Address of the RPR multicast message received does not comprise this nodal information; The life span TTL receiving the RPR multicast message encapsulating multicast data message is subtracted 1, determines that amended TTL is greater than 0, send from the another port of this node and receive RPR multicast message.
According to said method, the RPR multicast message carrying multicast data message is always terminated at the node being connected to multicast reception end in RPR network, can not carry out the broadcast of whole net in RPR network.It is decapsulation as required that other nodes of RPR network receive RPR multicast message, and the member port searching multicast forward table carries out local multicast data message forwarding, saves the process resource of RPR process chip.
As shown in Figure 3, it is the application networking scene schematic diagram of the embodiment of the present invention one.Fig. 3 interior joint S1-S5 forms a RPR ring, enable IGMP Snooping (internet group management snoop protocol) on each node.Node S1-S5 election node S1 is the igmp querying device in RPR network.
Node S1-S5 is assigned with a unique node ID respectively, and each node ID is within 1-48.The 48bit of 6 bytes of the object RPR MAC Address of such RPR message can be set for identifying corresponding node ID, in order to carry nodal information respectively.
Node S1-S5 each self-operating RPR agreement, collects RPR network topological information.In the present embodiment, be described for the RPR network topological information that node S1 collects, the mode of the RPR network topological information that other nodes are collected is identical.The RPR network topological information that node S1 collects at least comprises the following information of table 1:
| Subport number | Corresponding node ID | Corresponding node MAC | East orientation ring arrives jumping figure | West arrives jumping figure to ring |
| P1 | S1 | MAC-S1 | 0 | 0 |
| P2 | S2 | MAC-S2 | 4 | 1 |
| P3 | S3 | MAC-S3 | 3 | 2 |
| P4 | S4 | MAC-S4 | 2 | 3 |
| P5 | S5 | MAC-S5 | 1 | 4 |
Table 1
In the present embodiment, subport represents virtual RPR subport.At RPR network, node S1 accesses RPR ring respectively by two physical port S1-1 and S1-2, at these two physical ports corresponding a RPR port, i.e. RPR logic interface in logic.Its middle port S1-1 is east orientation port, and port S1-2 is that west is to port.In the present invention, subport and RPR logic interface are two concepts.Subport node S1 points to virtual RPR subport, each subport and a RPR node one_to_one corresponding of each node on RPR ring.
terminal adds multicast group
Terminal Client2 sends the IGMP adding multicast group 225.1.1 and reports (IGMP report) message.The receiving port S2-3 of IGMP report message is added the member port of multicast forward table by node S2, subport P2 corresponding for this node ID is joined the subport collection of multicast forward table.
The IGMP report message received is encapsulated as RPR broadcasting packet by node S2, and wherein RPRMAC address in source is MAC-S2, and object RPR MAC Address is broadcast address.Node S2 broadcasts the RPR broadcasting packet encapsulating IGMP report message in RPR network.
Node S1 receives the RPR broadcasting packet encapsulating IGMP report message, searches corresponding subport P2, then this subport P2 is added the subport collection that local multicast is transmitted according in the topology information of source RPR MAC Address shown in table 1.
Same, other nodes on network, node S3-S5 receives the RPR broadcasting packet encapsulating IGMP report message that node S2 sends, in the topology information of collecting separately, find corresponding subport P2 according to source RPR MAC Address, the subport transmitted at local multicast respectively concentrates interpolation to find subport P2.
Same, terminal Client4 sends the IGMP report message adding multicast group 225.1.1, the receiving port S4-3 of IGMP report message is added the member port that local multicast is transmitted by node S4, subport P4 corresponding for this node is joined the subport collection that local multicast is transmitted.The IGMP message of node S4 self terminal Client4 in future is encapsulated as RPR broadcasting packet, and wherein RPR MAC Address in source is MAC-S4, broadcasts in RPR network.
Node S1, S2, S3, S5 receive the RPR broadcasting packet encapsulating IGMP report message that node S4 broadcasts, the subport P4 that the subport transmitted at respective local multicast respectively concentrates the node ID of interpolation node S4 corresponding.
Terminal Client5 sends IGMP report message, and the process that node S5 receives the IGMP report message that Client5 sends is identical.The receiving port S5-3 of IGMP report message is added the member port that local multicast is transmitted by node S5, subport P5 corresponding for local node is added the subport collection that local multicast is transmitted.
The IGMP report message of node S5 self terminal Client in future is encapsulated as RPR broadcasting packet, and wherein RPR MAC Address in source is MAC-S5, broadcasts in RPR network.
Node S1-S4 receives the RPR broadcasting packet encapsulating IGMP report message that node S5 broadcasts, the subport P5 that the subport transmitted at respective local multicast respectively concentrates the node ID of interpolation node S5 corresponding.
As shown in Figure 3, the multicast forward table neutron sets of ports of node S1 P5, P4, P2}, and the multicast forward table neutron sets of ports of node S2 be P5, P4, P2}, member port is { S2-3}; The multicast forward table neutron sets of ports of node S3 is { P5, P4, P2}; The multicast forward table neutron sets of ports of node S4 be P5, P4, P2}, member port is { S4-3}; The multicast forward table neutron sets of ports of node S5 is that { P5, P4, P2}, member port is { S5-3}.
multicast data packet forwarding
In Fig. 3, multicast source Server1 connected node S1, when node S1 receives multicast data message, can according to the topology information of collecting forward-path optimum with the calculating being connected multicast receiving terminal.
Node S1 is according to port S1-1 and port S1-2, and by subport collection, { P5, P4, P2} are divided into different east orientation port subset and the western combination to port subset respectively.In the present embodiment, node S1 by subport P5, P4, P2} are divided into the combination of kind of the port S1-1 subset sums port S1-2 subset of four shown in table 2:
Table 2
In the first combination, subport collection is divided into port S1-1 subset { NULL} and port S1-2 subset { P2, P4, P5} by node S1.In the first combination, node S1 by multicast data message from port S1-2 be forwarded to the S5 of node farthest corresponding to subport the jumping figure of process be 4.Under the first combination, port S1-1 subset with and the port S1-2 subset jumping figure sum that arrives subport be farthest 4.
In the second combination, subport collection is divided into port S1-1 subset { P5} and port S1-2 subset { P2, P4} by node S1.In the second combination, node S1 by multicast data message from port S1-1 be forwarded to node S5 farthest the jumping figure of process be 1; Multicast data message is forwarded to from port S1-2 the S4 of node farthest answered the jumping figure of process be 3.Under the second combination, port S1-1 subset with and the port S1-2 subset jumping figure sum that arrives subport be farthest 4.
In the third combination, subport collection is divided into port S1-1 subset { P5, P4} and port S1-2 subset { P2} by node S1.In the third combination, node S1 by multicast data message from port S1-1 be forwarded to the S4 of node farthest corresponding to subport the jumping figure of process be 2, node S1 by multicast data message from port S1-2 be forwarded to the S2 of node farthest corresponding to subport the jumping figure of process be 1.Under the third combination, port S1-1 subset with and the port S1-2 subset jumping figure sum that arrives subport be farthest 3.
In 4th kind of combination, subport collection is divided into port S1-1 subset { P5, P4, P2} and port S1-2 subset { NULL} by node S1.In the 4th kind of combination, node S1 by multicast data message from the port S1-1 of node S1 be forwarded to subport farthest the jumping figure of process be 4; By multicast data message from the port S1-2 of node S1 be forwarded to subport farthest corresponding the jumping figure of process be 0 (null).Under 4th kind of combination, port S1-1 subset with and the port S1-2 subset jumping figure sum that arrives subport be farthest 4.
Total jumping figure 3 under the third combination is minimum, therefore using two forward-paths corresponding under this combination as optimum forward-path, that is, node S1 sends multicast data message by port S1-1 and sends the path of multicast data message to node S2 to the path of node S5, S4 and by port S1-2.
The optimum that node S1 is corresponding according to port S1-1 subset sums port S1-2 bores a path and respectively the multicast data message of multicast group 225.1.1 is carried out RPR encapsulation, is sent the RPR multicast message of bear multicast data message by port S1-1 and port S1-2 respectively.
As shown in Figure 4, in the RPR multicast message of the bear multicast data message that node S1 is sent by port S1-1, source RPR MAC Address is the RPR MAC Address of node S1, the bit position that the node ID of object RPR MAC Address neutron port numbers P5 and P4 is corresponding is set, TTL (time-to-live, life span) to arrive in port S1-1 subset 2 of subport P4 farthest to jump.Meanwhile, the broadcast Fi position expanding control Extended Control field and the multicast MC position retaining position Res expansion are set.
Particularly, the present invention is by static configuration or utilize agreement to be the unique node identification (ID) of each RPR peer distribution.Due to bit (bit) number of the object MAC of RPR message, be 6 bytes totally 48 bits.The node ID of the corresponding node of each bit of 48 bit of such target MAC (Media Access Control) address, so RPR node on the ring number is within 48.
In the RPR multicast message of the bear multicast data message that node S1 is sent by port S1-2, source RPR MAC Address is the RPR MAC Address of node S1, the bit position corresponding to the node ID of subport P2 in object RPR MAC Address is set, and TTL arrives 1 of port numbers P2 to jump.Meanwhile, multicast MC position is carried in broadcast Fi position and the reservation position Res expansion of expanding control Extended Control field.
As shown in Figure 5, node S1 sends the multicast data message of RPR multicast message encapsulation respectively by port S1-1 and S1-2.
The MC mark judgement that node S5 receives RPR message according to port S5-1 receives RPR multicast message, the bit determining to receive corresponding local node ID in the object RPR MAC Address of RPR multicast message is set, copy the RPR multicast message received, copy the RPR multicast message received, TTL is subtracted 1.Node S4 determines that the TTL of the RPR multicast message received still is greater than 0 after subtracting 1, forwards RPR multicast message to node S4 from another port S5-2.The RPR multicast message copied is descapsulated into multicast data message by node S5, forwards the multicast data message of decapsulation to terminal Client5 by the member port S5-3 in multicast forward table.
Node S4 identifies judgement according to the MC that port S4-1 receives RPR message and receives RPR multicast message, and the bit determining to receive corresponding local node ID in the object RPR MAC Address of RPR multicast message is set, and copies the RPR multicast message received, TTL is subtracted 1.Node S4 determines that the TTL of RPR multicast message subtracts 1 and equals 0, stops sending by another port the RPR multicast message received.The RPR multicast message copied is descapsulated into multicast data message by node S4, by the member port S4-3 multicast data forwarding message of multicast forward table to terminal Client4.
The MC mark of the RPR message that node S2 receives according to port S2-1 judges the RPR multicast message received, and the bit receiving corresponding local node ID in the object RPR MAC Address of RPR multicast message is set, and copies the RPR multicast message received, TTL is subtracted 1.Node S2 determines that the TTL of the RPR multicast message received subtracts 1 and equals 0, stops sending by another port the RPR multicast message received.Node S2 will copy RPR multicast message and be descapsulated into multicast data message, forward the multicast data message after decapsulation to terminal Client2 by the member port S2-3 in multicast forward table.
As shown in Figure 5, node S1 passes through the minimum optimum forward-path of jumping figure, the RPR multicast message of bear multicast data message is mail to respectively node S5, S4 and S2 of there is multicast reception end, avoid in prior art and the RPR broadcasting packet of bear multicast data message is flooded in RPR network, thus the redundant flow decreased on RPR ring, improve bandwidth availability ratio.And it is decapsulation as required that node S5, S4 and S2 receive RPR multicast message, the member port searching multicast forward table carries out local multicast data message forwarding, saves the process resource of RPR process chip.In Fig. 5, node S4 and S2 being connected to multicast reception end stops the continuation forwarding of the RPR multicast message of bear multicast data message on optimum forward-path.
multicast reception end leaves multicast group
Node S1 periodic broadcast as igmp querying device sends the RPR broadcasting packet being packaged with igmp querying message.Node S5 receives the RPR broadcasting packet being packaged with igmp querying message, and RPR broadcasting packet is descapsulated into igmp querying message, issues terminal Client5 by member port S5-3.
Terminal Client5 receives igmp querying message, responds IGMP leave message.IGMP leave message can be encapsulated as RPR broadcasting packet and broadcast in RPR network by node S5.Node S1 receives the IGMP leave message of RPR encapsulation, sends the IGMP group-specific query message of RPR encapsulation to node S5 (source RPRMAC is node S1, object RPR MAC is node S5).Node S5 will receive the IGMP group-specific query message decapsulation of RPR encapsulation, sends IGMP group-specific query message only to terminal Client5 by member port.
After terminal Client5 receives IGMP group-specific query message, send the IGMP leave message of response IGMP group-specific query message.Node S5 receives the IGMP leave message of response IGMP group-specific query message, delete subport S5 and member port S5-3 that local multicast transmits neutron port, the IGMP leave message of response IGMP ad hoc inquiry message is encapsulated as RPR broadcasting packet and broadcasts.Node S1 receives the IGMP ad hoc inquiry message of RPR broadcasting packet encapsulation, deletes subport P5 from local multicast table neutron port.Similarly, other nodes receive the RPR broadcasting packet of the IGMP leave message encapsulating response IGMP group-specific query message, delete the subport P5 that local multicast transmits neutron port.
Node S1 determines that local multicast transmits the change of neutron sets of ports, various combination port subset is repartitioned according to the subport collection after the topology information of collecting and change, calculate the jumping figure summation that often kind of port subset is corresponding, determine optimum forward-path according to the combination of minimum hop count summation.In the present embodiment, to encapsulate the optimum forward-path of the RPR multicast message of multicast data message constant according to sending to node S2 and S4 of determining of the subport collection after change for node S1.
The multicast data message of multicast group 225.1.1, according to selected port S1-1 subset sums port S1-2 sub-combinations, is encapsulated as RPR multicast message, is sent by port S1-1 and port S1-2 by node S1 respectively.
Node S1 sends the RPR multicast message encapsulating multicast data message by port S1-1, this RPR multicast message carries multicast mark (the MC mark of the expansion of res position in Extended control field), object RPR MAC Address carries multicast destination node information (the object RPR MAC Address of RPR multicast message corresponds to the bit position of the node ID of subport P4), TTL is the jumping figure arriving port destination node farthest, namely 2 jumps.
The RPR multicast message encapsulating multicast data message that node S1 is sent by port S1-2, source RPR MAC Address is the RPR MAC Address of node S1, the bit position corresponding to the node ID of subport P2 in object RPR MAC Address is set (in order to represent multicast destination node), and TTL arrives 1 of distalmost end slogan P2 to jump (in order to represent the jumping figure arriving destination node farthest).
Node S5 identifies judgement according to the MC that port S5-1 receives RPR message and receives RPR multicast message, and the bit determining to receive corresponding local node ID in the object RPR MAC Address of RPR multicast message is not set, and the TTL receiving RPR multicast message is subtracted 1.Node S5 is still greater than 0 after determining the TTL amendment of the RPR multicast message received, and forwards RPR multicast message to node S4 from another port S5-2.Due to, the multicast reception end that node S5 connects leaves multicast group, then without the need to copying decapsulation to the RPR multicast message received, avoid to local multicast receiving terminal multicast data forwarding message.Node S5, as the forward node optimum forward-path arriving distalmost end multicast destination node, continues to perform forwarding, but can not at local multicast data forwarding message.
The MC mark judgement that node S4 receives RPR message according to port S4-1 receives RPR multicast message, TTL is subtracted 1, judge that the bit of corresponding local node ID in object RPR MAC is set (namely this equipment is multicast destination node), RPR multicast message is descapsulated into multicast data message, is forwarded to terminal Client4 by the member port S4-3 of multicast forward table.Due to, the TTL of RPR multicast message is reduced to 0 by node S4, then no longer continue to forward to other nodes the RPR multicast message received.
As can be seen here, in the present embodiment, the RPR multicast message carrying multicast data message is always terminated at the node being connected to multicast reception end in RPR network, can not carry out the broadcast of whole net in RPR network.
Leave except the mode of multicast group except above-mentioned terminal Client 5 sends IGMP leave message, as terminal Clinet5 because fault periodically cannot send igmp querying message by responsive node S1, terminal Client5 can leave multicast group equally.The IGMP report message of terminal Client2 and terminal Client4 response is encapsulated as RPR broadcasting packet and broadcasts in RPR network by node S2 and node S4.After node S1 receives, have recorded the node identification (the source RPR MAC Address according to RPR broadcasting packet) of S1 and S4.Node S1 determines the IGMP message not receiving the multicast reception end client5 that node S5 connects in specific cycle, deletes the subport P5 that local multicast transmits neutron sets of ports.
The mode that terminal Client2 leaves multicast group is identical with the mode that terminal Clinet leaves multicast group, does not repeat them here.The subport P4 only recorded after the subport collection that node S1 local multicast is transmitted upgrades.Subport P4 after renewal is divided into two kinds of combinations according to the topology information of collecting by node S1: port S1-1 subset { P4} and port S1-2 subset { NULL} and port S1-1 subset { NULL} and port S1-2 subset { P4}.Because the jumping figure sum of front a kind of combination is 2, being less than rear a kind of jumping figure combination sum is 3 jumpings.Node S1 determines the optimum forward-path of multicast data message according to front a kind of combination.Node S1 multicast data forwarding message is identical with foregoing teachings to the mode of multicast destination node S4, does not repeat them here.
It should be noted that, when the change in topology (such as RPR node increases, RPR node reduces, RPR inter-node link fault) of RPR network, each RPR collects topology information again.Node S1 determines the optimum forward-path of all multicast destination nodes according to the subport collection in the topology information of again collecting and multicast forward table.Same, when RPR network topology change and the subport of the multicast forward table of node S1 also change, redefine the optimum forward-path of all multicast destination nodes equally.
Above method provided by the invention is described, below equipment provided by the invention is described:
Fig. 6 is device 600 schematic diagram provided by the invention.The node that this application of installation is connected with multicast source in RPR network, this device comprises:
Destination node confirmation unit 601, for determining each multicast destination node.
First receiving element 602, for receiving multicast data message.
Path forwards confirmation unit 603, for determining the optimum forward-path of each multicast destination node according to the topology information of collecting.
First transmitting element 604, for sending according to each optimum forward-path the RPR multicast message encapsulating multicast data message; The object RPRMAC address of the RPR multicast message wherein each optimum forward-path sent comprises the multicast destination node information on each optimum forward-path and the life span TTL of the RPR multicast message that each optimum forward-path sends to equal to arrive on each optimum forward-path the jumping figure of multicast destination node farthest.
Destination node confirmation unit 601, also for, receive and encapsulate the RPR broadcasting packet of IGMP report message; Subport number corresponding for the source RPR MAC Address encapsulating IGMP report message RPR broadcasting packet is joined the subport collection of multicast forward table; Wherein encapsulate the site identity of the corresponding multicast destination node of source RPR MAC Address of IGMP report message RPR broadcasting packet, the corresponding subport number of site identity.
Path forward confirmation unit 603, also for,
Subport collection is divided into the first different port subset and the combination of the second port subset by east orientation path and west to path;
The jumping figure arriving the first port subset node farthest in each combination is added with the jumping figure arriving node farthest in the second port subset, calculates total jumping figure of each combination;
Using the forward-path of combination correspondence minimum for total jumping figure as optimum forward-path.
Further, the first receiving element 602, also for receiving the RPR broadcasting packet that encapsulates IGMP leave message and receiving the RPR broadcasting packet encapsulating IGMP leave message that response encapsulates the RPR unicast message of IGMP group-specific query message.
First transmitting element 604, also for sending the RPR unicast message encapsulating IGMP group-specific query message, the object RPR MAC Address encapsulating the RPR unicast message of IGMP group-specific query message is the source RPR MAC Address encapsulating the RPR broadcasting packet of IGMP leave message received.
First processing unit 605, deletes for transmitting neutron port at local multicast the subport encapsulating the source RPR MAC Address of the RPR unicast message of IGMP leave message corresponding to response.
Path forwards confirmation unit 603, also for repartitioning into the first different port subset and the combination of the second port subset according to topology information and the subport collection of renewal; Calculate in each combination of repartitioning and arrive the first port subset jumping figure of node and total jumping figure of being added of the jumping figure of node farthest in arrival the second port subset farthest; Optimum forward-path is redefined according to the combination of minimum hop count summation.
Fig. 7 is device 700 schematic diagram provided by the invention.This application of installation connects the node of multicast receiving terminal in RPR network, and device comprises:
Second Transmit-Receive Unit 701, for receiving the RPR multicast message encapsulating multicast data message.Second processing unit 702, for determining that the source RPR MAC Address of the RPR multicast message received comprises this nodal information; Copy the RPR multicast message received, the RPR multicast message copied is descapsulated into multicast data message; The member port of multicast data message after decapsulation by multicast forward table is sent; The life span TTL receiving the RPR multicast message encapsulating multicast data message is subtracted 1, when amended TTL is greater than 0, sends from the another port of this node and receive RPR multicast message; When amended TTL equals 0, stop sending by another port the RPR multicast message received.
Second processing unit 702, also for determining that the source RPR MAC Address of the RPR multicast message received does not comprise this nodal information; The life span TTL receiving the RPR multicast message encapsulating multicast data message is subtracted 1, determines that amended TTL is greater than 0, send from the another port of this node and receive RPR multicast message.
Second Transmit-Receive Unit 701, also for receiving IGMP report message.
Multicast forward table processing unit 703, for concentrating the subport of adding this node in the subport of multicast forward table; The receiving port of IGMP report message is added in the member port of multicast forward table.
Second Transmit-Receive Unit 701, also for the IGMP received report message being encapsulated as the RPR broadcasting packet encapsulating IGMP report message, broadcast encapsulates the RPR broadcasting packet of IGMP report message.
Second Transmit-Receive Unit 701, also for receiving IGMP leave message; The IGMP leave message received is encapsulated as the RPR broadcasting packet encapsulating IGMP leave message, broadcast encapsulates the RPR broadcasting packet of IGMP leave message; Receive the RPR broadcasting packet encapsulating IGMP group-specific query message, be descapsulated into IGMP group-specific query message, sent the IGMP group-specific query message of decapsulation by each member port.
Multicast forward table processing unit 703, also deletes from multicast forward table for the member port that the receiving port of the IGMP leave message of the IGMP group-specific query message by response decapsulation is corresponding.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. a Layer 2 Multicast data message forwarding method, the method is applied to the node be connected with multicast source in RPR network, it is characterized in that, described method comprises:
Determine each multicast destination node;
Receiving multicast data message;
The optimum forward-path of each multicast destination node is determined according to the topology information of collecting;
The RPR multicast message encapsulating multicast data message is sent according to each optimum forward-path; The object RPR MAC Address of the RPR multicast message wherein each optimum forward-path sent comprises the multicast destination node information on each optimum forward-path and the life span TTL of the RPR multicast message that each optimum forward-path sends to equal to arrive on each optimum forward-path the jumping figure of multicast destination node farthest.
2. the method for claim 1, is characterized in that, describedly determines that the method for multicast destination node comprises:
Receive the RPR broadcasting packet encapsulating IGMP IGMP report message;
Subport number corresponding for the source RPR MAC Address of the described IGMP of encapsulating report message RPR broadcasting packet is joined the subport collection of multicast forward table; The wherein said site identity encapsulating the corresponding described multicast destination node of source RPR MAC Address of IGMP report message RPR broadcasting packet, the corresponding described subport number of described site identity.
3. method as claimed in claim 2, is characterized in that, the described topology information according to collecting is determined to comprise to the optimum forward-path of each multicast destination node:
Described subport collection is divided into the first different port subset and the combination of the second port subset by east orientation path and west to path;
The jumping figure arriving the first port subset node farthest in each combination is added with the jumping figure arriving node farthest in the second port subset, calculates total jumping figure of each combination;
Using the forward-path of combination correspondence minimum for total jumping figure as optimum forward-path.
4. method as claimed in claim 3, it is characterized in that, the method also comprises:
Receive the RPR broadcasting packet encapsulating IGMP leave message;
Send and encapsulate the RPR unicast message of IGMP group-specific query message, described in encapsulate the RPR unicast message of IGMP group-specific query message object RPR MAC Address be the source RPR MAC Address encapsulating the RPR broadcasting packet of IGMP leave message received;
Receive the RPR broadcasting packet encapsulating IGMP leave message of the RPR unicast message encapsulating IGMP group-specific query message described in response; Transmit neutron port at local multicast and delete the subport encapsulating the source RPR MAC Address of the RPR unicast message of IGMP leave message corresponding to response.
5. method according to claim 4, is characterized in that, described method comprises:
The first different port subset and the combination of the second port subset is repartitioned into according to described topology information and the subport collection of renewal;
Calculate in each combination of repartitioning and arrive the first port subset jumping figure of node and total jumping figure of being added of the jumping figure of node farthest in arrival the second port subset farthest;
Optimum forward-path is redefined according to the combination of minimum hop count summation.
6. a Layer 2 Multicast data message forwarding method, be applied to the node connecting multicast receiving terminal in RPR network, the method comprises:
Receive the RPR multicast message encapsulating multicast data message;
Determine that the source RPR MAC Address of the RPR multicast message received comprises this nodal information;
Copy the RPR multicast message received, the RPR multicast message copied is descapsulated into multicast data message;
The member port of multicast data message after decapsulation by multicast forward table is sent;
The life span TTL encapsulating the RPR multicast message of multicast data message described in receiving is subtracted 1, when amended TTL is greater than 0, sends from the another port of this node and receive RPR multicast message; When amended TTL equals 0, stop sending by another port the RPR multicast message received.
7. method according to claim 6, is characterized in that, described method also comprises:
Determine that the source RPR MAC Address of the RPR multicast message received does not comprise this nodal information; The life span TTL encapsulating the RPR multicast message of multicast data message described in receiving is subtracted 1, determines that amended TTL is greater than 0, send from the another port of this node and receive RPR multicast message.
8. method according to claim 6, is characterized in that, described method also comprises:
Receive IGMP report message;
The subport of adding this node is concentrated in the subport of multicast forward table;
The receiving port of described IGMP report message is added in the member port of described multicast forward table;
The IGMP report message received is encapsulated as the RPR broadcasting packet encapsulating IGMP report message, described in broadcast, encapsulates the RPR broadcasting packet of IGMP report message.
9. method according to claim 6, is characterized in that, described method also comprises:
Receive IGMP leave message;
The IGMP leave message received is encapsulated as the RPR broadcasting packet encapsulating IGMP leave message, described in broadcast, encapsulates the RPR broadcasting packet of IGMP leave message;
Encapsulate the RPR broadcasting packet of IGMP group-specific query message described in reception, be descapsulated into described IGMP group-specific query message, sent the IGMP group-specific query message of decapsulation by each member port;
Member port corresponding for the receiving port of the IGMP leave message of the IGMP group-specific query message of the described decapsulation of response is deleted from described multicast forward table.
10. a Layer 2 Multicast data message forwarding device, the node that this application of installation is connected with multicast source in RPR network, is characterized in that, described device comprises:
Destination node confirmation unit, for determining each multicast destination node;
First receiving element, for receiving multicast data message;
Path forwards confirmation unit, for determining the optimum forward-path of each multicast destination node according to the topology information of collecting;
First transmitting element, for sending according to each optimum forward-path the RPR multicast message encapsulating multicast data message; The object RPRMAC address of the RPR multicast message wherein each optimum forward-path sent comprises the multicast destination node information on each optimum forward-path and the life span TTL of the RPR multicast message that each optimum forward-path sends to equal to arrive on each optimum forward-path the jumping figure of multicast destination node farthest.
11. devices as claimed in claim 10, is characterized in that, described destination node confirmation unit, specifically for,
Receive the RPR broadcasting packet encapsulating IGMP report message;
Subport number corresponding for the source RPR MAC Address of the described IGMP of encapsulating report message RPR broadcasting packet is joined the subport collection of multicast forward table; The wherein said site identity encapsulating the corresponding described multicast destination node of source RPR MAC Address of IGMP report message RPR broadcasting packet, the corresponding described subport number of described site identity.
12. devices as claimed in claim 11, is characterized in that, described path forwards confirmation unit, specifically for,
Described subport collection is divided into the first different port subset and the combination of the second port subset by east orientation path and west to path;
The jumping figure arriving the first port subset node farthest in each combination is added with the jumping figure arriving node farthest in the second port subset, calculates total jumping figure of each combination;
Using the forward-path of combination correspondence minimum for total jumping figure as optimum forward-path.
13. devices as claimed in claim 12, is characterized in that,
Described first receiving element, also responds with reception the RPR broadcasting packet encapsulating IGMP leave message encapsulating the RPR unicast message of IGMP group-specific query message for receiving the RPR broadcasting packet encapsulating IGMP leave message;
Described first transmitting element, also for sending the RPR unicast message encapsulating IGMP group-specific query message, described in encapsulate the RPR unicast message of IGMP group-specific query message object RPR MAC Address be the source RPR MAC Address encapsulating the RPR broadcasting packet of IGMP leave message received;
First processing unit, deletes for transmitting neutron port at local multicast the subport encapsulating the source RPR MAC Address of the RPR unicast message of IGMP leave message corresponding to response.
14. devices according to claim 13, is characterized in that, described path forwards confirmation unit, also specifically for,
The first different port subset and the combination of the second port subset is repartitioned into according to described topology information and the subport collection of renewal;
Calculate in each combination of repartitioning and arrive the first port subset jumping figure of node and total jumping figure of being added of the jumping figure of node farthest in arrival the second port subset farthest;
Optimum forward-path is redefined according to the combination of minimum hop count summation.
15. 1 kinds of Layer 2 Multicast data message forwarding devices, be applied to the node connecting multicast receiving terminal in RPR network, described device comprises:
Second Transmit-Receive Unit, for receiving the RPR multicast message encapsulating multicast data message;
Second processing unit, for determining that the source RPR MAC Address of the RPR multicast message received comprises this nodal information; Copy the RPR multicast message received, the RPR multicast message copied is descapsulated into multicast data message; The member port of multicast data message after decapsulation by multicast forward table is sent; The life span TTL encapsulating the RPR multicast message of multicast data message described in receiving is subtracted 1, when amended TTL is greater than 0, sends from the another port of this node and receive RPR multicast message; When amended TTL equals 0, stop sending by another port the RPR multicast message received.
16. devices according to claim 15, is characterized in that, described second processing unit, also for determining that the source RPR MAC Address of the RPR multicast message received does not comprise this nodal information; The life span TTL encapsulating the RPR multicast message of multicast data message described in receiving is subtracted 1, determines that amended TTL is greater than 0, send from the another port of this node and receive RPR multicast message.
17. devices according to claim 15, is characterized in that,
Described second Transmit-Receive Unit, also for receiving IGMP report message;
Multicast forward table processing unit, for concentrating the subport of adding this node in the subport of multicast forward table; The receiving port of described IGMP report message is added in the member port of described multicast forward table;
Described second Transmit-Receive Unit, also for the IGMP received report message being encapsulated as the RPR broadcasting packet encapsulating IGMP report message, encapsulates the RPR broadcasting packet of IGMP report message described in broadcast.
18. devices according to claim 15, is characterized in that,
Described second Transmit-Receive Unit, also for receiving IGMP leave message; The IGMP leave message received is encapsulated as the RPR broadcasting packet encapsulating IGMP leave message, described in broadcast, encapsulates the RPR broadcasting packet of IGMP leave message; Encapsulate the RPR broadcasting packet of IGMP group-specific query message described in reception, be descapsulated into described IGMP group-specific query message, sent the IGMP group-specific query message of decapsulation by each member port;
Described multicast forward table processing unit, also deletes from described multicast forward table for the member port that the receiving port of the IGMP leave message of the IGMP group-specific query message by the described decapsulation of response is corresponding.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763373A (en) * | 2016-03-03 | 2016-07-13 | 杭州华三通信技术有限公司 | Flooding message forwarding method and device |
| CN106789676A (en) * | 2017-01-19 | 2017-05-31 | 西安电子科技大学 | The reliable multicast method for routing of low overhead in wireless self-organization network |
| CN108282406A (en) * | 2017-12-15 | 2018-07-13 | 瑞斯康达科技发展股份有限公司 | A kind of data transmission method, stack equipment and pile system |
| CN108347385A (en) * | 2018-05-14 | 2018-07-31 | 新华三技术有限公司 | Applied to the message broadcasting method and apparatus in Resilient Packet Ring RPR |
| CN111131018A (en) * | 2019-11-27 | 2020-05-08 | 理工雷科电子(天津)有限公司 | Multicast routing method based on RapidIO switching network and electronic equipment |
| CN113676410A (en) * | 2021-08-19 | 2021-11-19 | 中国电信股份有限公司 | Network multicast method and device, electronic equipment and computer readable storage medium |
| CN113872875A (en) * | 2021-07-27 | 2021-12-31 | 广西电网有限责任公司桂林供电局 | Self-adaptive intelligent gateway discovery method based on load balancing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1645834A (en) * | 2005-02-02 | 2005-07-27 | 周旭扬 | Method and device for loop discovery, space reuse and protection conversion in MAC bridge connecting network |
| US20060109802A1 (en) * | 2004-11-19 | 2006-05-25 | Corrigent Systems Ltd. | Virtual private LAN service over ring networks |
| CN101188539A (en) * | 2006-11-21 | 2008-05-28 | 日本电气株式会社 | Resilient packet ring (RPR) network system, RPR node device, and redundancy method for the same |
| CN101330423A (en) * | 2007-06-21 | 2008-12-24 | 日本电气株式会社 | Packet ring network system and packet transport method |
| CN101494549A (en) * | 2009-03-02 | 2009-07-29 | 杭州华三通信技术有限公司 | Method for transmitting multicast data by RPR and RPR node |
| CN101534231A (en) * | 2009-04-17 | 2009-09-16 | 杭州华三通信技术有限公司 | Method, system and equipment for transmitting data in elastic grouping ring |
| CN102299840A (en) * | 2010-06-25 | 2011-12-28 | 深圳市邦彦信息技术有限公司 | Generation algorithm of multicast transmission path based on RPR (resilient packet ring) |
-
2015
- 2015-01-06 CN CN201510005799.8A patent/CN104579982B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060109802A1 (en) * | 2004-11-19 | 2006-05-25 | Corrigent Systems Ltd. | Virtual private LAN service over ring networks |
| CN1645834A (en) * | 2005-02-02 | 2005-07-27 | 周旭扬 | Method and device for loop discovery, space reuse and protection conversion in MAC bridge connecting network |
| CN101188539A (en) * | 2006-11-21 | 2008-05-28 | 日本电气株式会社 | Resilient packet ring (RPR) network system, RPR node device, and redundancy method for the same |
| CN101330423A (en) * | 2007-06-21 | 2008-12-24 | 日本电气株式会社 | Packet ring network system and packet transport method |
| CN101494549A (en) * | 2009-03-02 | 2009-07-29 | 杭州华三通信技术有限公司 | Method for transmitting multicast data by RPR and RPR node |
| CN101534231A (en) * | 2009-04-17 | 2009-09-16 | 杭州华三通信技术有限公司 | Method, system and equipment for transmitting data in elastic grouping ring |
| CN102299840A (en) * | 2010-06-25 | 2011-12-28 | 深圳市邦彦信息技术有限公司 | Generation algorithm of multicast transmission path based on RPR (resilient packet ring) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763373A (en) * | 2016-03-03 | 2016-07-13 | 杭州华三通信技术有限公司 | Flooding message forwarding method and device |
| CN106789676A (en) * | 2017-01-19 | 2017-05-31 | 西安电子科技大学 | The reliable multicast method for routing of low overhead in wireless self-organization network |
| CN108282406A (en) * | 2017-12-15 | 2018-07-13 | 瑞斯康达科技发展股份有限公司 | A kind of data transmission method, stack equipment and pile system |
| CN108282406B (en) * | 2017-12-15 | 2021-03-23 | 瑞斯康达科技发展股份有限公司 | Data transmission method, stacking equipment and stacking system |
| CN108347385A (en) * | 2018-05-14 | 2018-07-31 | 新华三技术有限公司 | Applied to the message broadcasting method and apparatus in Resilient Packet Ring RPR |
| CN108347385B (en) * | 2018-05-14 | 2021-05-28 | 新华三技术有限公司 | Message broadcasting method and device applied to Resilient Packet Ring (RPR) |
| CN111131018A (en) * | 2019-11-27 | 2020-05-08 | 理工雷科电子(天津)有限公司 | Multicast routing method based on RapidIO switching network and electronic equipment |
| CN113872875A (en) * | 2021-07-27 | 2021-12-31 | 广西电网有限责任公司桂林供电局 | Self-adaptive intelligent gateway discovery method based on load balancing |
| CN113872875B (en) * | 2021-07-27 | 2023-07-11 | 广西电网有限责任公司桂林供电局 | Self-adaptive intelligent gateway discovery method based on load balancing |
| CN113676410A (en) * | 2021-08-19 | 2021-11-19 | 中国电信股份有限公司 | Network multicast method and device, electronic equipment and computer readable storage medium |
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