CN101834770A - Ethernet multiple-ring network address refreshing method and device - Google Patents

Ethernet multiple-ring network address refreshing method and device Download PDF

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CN101834770A
CN101834770A CN200910079387A CN200910079387A CN101834770A CN 101834770 A CN101834770 A CN 101834770A CN 200910079387 A CN200910079387 A CN 200910079387A CN 200910079387 A CN200910079387 A CN 200910079387A CN 101834770 A CN101834770 A CN 101834770A
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subring
node
address
ring
passage
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CN101834770B (en
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王斌
吴少勇
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses an Ethernet multiple-ring network address refreshing method comprising the following steps of: allocating a refreshing channel on a clear path between interconnection nodes of a subring of an Ethernet multiple-ring network; sending a Flush message to a node on the refreshed channel so as to refresh an address forwarding table of the node on the refreshed channel when the topology of the subring of the Ethernet multiple-ring network is changed and the interconnection nodes of the subring with changed topology need to send an address refreshing (Flush) message to the outside of the subring. The invention also discloses an Ethernet multiple-ring network address refreshing device which can prevent the Flush message from being spread on other rings or subrings, prevent all nodes of other networks of the interconnection nodes from address refreshing, reduce instant broadcast storms of the Ethernet multiple-ring network, and enhance the performance of the Ethernet multiple-ring network.

Description

The address flush method of ether multi-ring network and device
Technical field
The present invention relates to the ethernet address refresh technique in the data communication, relate in particular to a kind of address flush method and device of ether multi-ring network.
Background technology
In the practical application of Ethernet, extensively adopted various resist technologies, realize the switching between primary path and the backup path.So-called ether multi-ring network is meant that promptly Ethernet constitutes polycyclic topological structure.Topological structure as shown in Figure 1 promptly constitutes the ether multi-ring network, and node S1 to S6 is an Ethernet switch among the figure, and network B is connected with node S2, and network A is connected with node S5.
For the resist technology of ether multi-ring network, in the standard of formulating the ether multi-ring network is divided into ring (Ring) and subring (Sub-Ring) at present.So-called ring is meant that a complete ether ring, subring are meant a kind of ether ring that links to each other with other rings or other networks by interconnecting nodes (Interconnection Node); Interconnecting nodes is meant the common node that belongs to two or more ether rings simultaneously.As shown in Figure 2, comprise a ring and a subring among the figure, Ring1 is a ring, and Ring2 is subring.The node that Ring1 comprises has S1, S2, S3 and S4, and the link that comprises has:<S1, S2 〉,<S2, S3 〉,<S3, S4〉and<S4, S1 〉; The node that Ring2 comprises has S3, S5, S6 and S4, and the link that comprises has:<S3, S5 〉,<S5, S6〉and<S6, S4 〉.It is pointed out that<S3 S4〉link belongs to Ring1 and do not belong to Ring2.
In the ether multi-ring network, need one section link in the ring/subring data message forwarding is blocked to prevent into ring, this section link is called the ring protection link, and the node that has a ring protection link promptly is called ring protection controlling links node.The switching of primary path and backup path is participated in carrying out by the ring protection link in the ether multi-ring network.As shown in Figure 2, node S1 is a ring protection controlling links node in Ring1, and the link direct-connected with the port one 1 of node S1 is the ring protection link of Ring1; In Ring2, node S6 is a ring protection controlling links node, with the link of 62 direct port connection of node S6 be the ring protection link of Ring2.Under normal circumstances; the protected data forwarding capability of node S1 port blocked 11; the protected data forwarding capability of node S6 port blocked 62; make the communication path between network B and the network A be: network B ← → S2 ← → S3 ← → S5 ← → network A, be repeated to transmit and form broadcast storm to prevent protected data.
When the link of ether multi-ring network breaks down; if faulty link is not the ring protection link; then ring protection controlling links node is opened the protected data forwarding capability of its port that links to each other with the ring protection link; and each node also wants refresh address to transmit, and makes the path transmission of communicating by letter between the network according to new.As shown in Figure 3, Ring1<S2, S3〉link breaks down, after node S2 detects link failure, the data forwarding function of port blocked 22, and notify other node links that fault has taken place; After ring protection controlling links node S1 receives signalling trouble, open the protected data forwarding capability of port one 1.In addition, each node on the Ring1 also wants refresh address to transmit, and obtains communication path new between network B and the network A and is: network B ← → S2 ← → S1 ← → S4 ← → S3 ← → S5 ← → network A.
Accordingly, when the faulty link in the ether multi-ring network recovers, need recover to switch the transmission path when Network Transmission returns to normal condition.Because transmission path changes, so node also needs to carry out refreshing of addresses forwarding table.
When the ether multi-ring network being safeguarded and protect switching, need to propagate a large amount of control messages, these control messages are being propagated automatic the protection in the control channel.Automatically the protection control channel has two classes, and a class is called the control channel of ring corresponding to ring, and the control channel of ring is configured in the ring; Another kind of is corresponding to subring, is called the control channel of subring.The control channel of subring has two kinds of configuration modes, and first kind is the configuration mode that does not have tunnel (Virtual Channel), i.e. the control channel of subring only is configured in the subring, as shown in phantom in Figure 4; Second kind is that the control channel configuration of subring comprises part and the tunnel in the subring, and so-called tunnel is meant other networks of being configured in the interconnecting nodes place or other rings (comprising other subrings) transmission channel that protocol massages provided for subring.As shown in Figure 5, the control channel of subring Ring2 not only is configured on the subring Ring2, but also is configured on the ring Ring1; Be configured in the part (dotted line shown in) of ring on the Ring1 and be the tunnel that the protocol massages for subring Ring2 provides.Because the existence of tunnel, the protocol massages of subring can arrive any one node in the subring.
About the problem of subring address flush in the ether multi-ring network, as shown in Figure 6, when ether multi-ring network fault-free, the communication path between network B and the network A is: network B ← → S2 ← → S3 ← → S5 ← → network A.Link<S3 as subring Ring2; S5〉when breaking down; ring protection controlling links node S5 is after detecting port 51 respective links and breaking down; refresh the addresses forwarding table of self; the protected data forwarding capability of port blocked 51; open the protected data forwarding capability of port 52, and outwards send the malfunction frame.After node S6 receives the malfunction frame, refresh the addresses forwarding table of self, form new transmission path between network A and the network B.After node S5 and node S6 refreshed separately addresses forwarding table, network A was issued the broadcasting of the protected data of network B by node S5 and node S6, finally can arrive network B, and each node of new transmission path address of learning network A.
From above-mentioned analysis as can be seen, when the link occurs fault of subring, subring need send protocol massages by interconnecting nodes other network beyond this subring and transmit with the node refresh address of notifying other network.Existing standard to this way to solve the problem is: when the subring topology changes, after and if only if interconnecting nodes is received the protocol massages that has address flush information and is refreshed self addresses forwarding table from subring, this interconnecting nodes is just constructed new address flush protocol massages, and continuous 3 protocol massages with structure are forwarded on other ring or subring at interconnecting nodes place; After node in other ring or the subring is received this protocol massages, refresh addresses forwarding table separately.
For example: constitute in the ether multi-ring network by Ring1, Ring2, Ring3 and Ring4 shown in Figure 7, Ring2 is a complete closed loop, the node that comprises has S2, S6, S7 and S3, the link that comprises has:<S2, S6 〉,<S6, S7 〉,<S7, S3〉and<S3, S2 〉, node S3 is a protection controlling links node, the link direct-connected with port 32 is the ring protection link; Ring1 is subring, and the node that comprises has S2, S1, S5 and S6, and the link that comprises has:<S2, S1 〉,<S1, S5〉and<S5, S6 〉, node S5 is a protection controlling links node, the link direct-connected with port 51 is the ring protection link; Ring3 is subring, and the node that comprises has S3, S4, S8 and S7, and the link that comprises has:<S3, S4 〉,<S4, S8〉and<S8, S7 〉, node S4 is a protection controlling links node, the link direct-connected with port 42 is the ring protection link; Ring4 is subring, and the node that comprises has S5, S9, S10, S11 and S8, and the link that comprises has:<S5; S9 〉,<S9, S10 〉,<S10, S11〉and<S11; S8 〉, node S10 is a protection controlling links node, the link direct-connected with port one 02 is the ring protection link.
Link<S10 as subring Ring4; S11〉when breaking down; node S10 blocks the protected data forwarding capability of 101 ports; and periodically outwards send fault warning (SF) message by port one 02; node S11 blocks the protected data forwarding capability of 112 ports, and periodically outwards sends the SF message by port one 11.Interconnecting nodes S5 refreshes the addresses forwarding table of self after receiving the SF message that has address flush information that node S10 sends first, constructs address flush (Flush) message then, sends 3 times continuously on the control channel of subring Ring1.After the node of subring Ring1 is received the Flush message, refresh addresses forwarding table separately, after interconnecting nodes S2 on the subring Ring1 and S6 receive that Flush message and refresh address are transmitted, need the new Flush message of structure, on the control channel of ring Ring2, send 3 times continuously, after the node of ring Ring2 is received this Flush message, refresh addresses forwarding table separately.Interconnecting nodes S8 refreshes the addresses forwarding table of self after receiving the SF message that has address flush information that node S11 sends first, constructs the Flush message then, sends 3 times continuously on the control channel of subring Ring3.After the node of subring Ring3 is received the Flush message, refresh address is transmitted, after interconnecting nodes S3 on the subring Ring3 and S7 receive that Flush message refresh address is transmitted, construct new Flush message, on ring Ring2, send 3 times continuously, after the node of ring Ring2 is received this Flush message, refresh addresses forwarding table separately.
This shows, though existing subring address flush method can guarantee other rings at subring interconnecting nodes place or the node in the subring and obtain address flush, but diffusion has but taken place in the address flush message of subring interconnecting nodes structure, this will cause that all the node refresh addresses on the tunnel transmit, cause taking place in all rings of ether multi-ring network and the subring broadcast storm of moment, thereby influence the overall performance of ether multi-ring network greatly.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of address flush method and device of ether multi-ring network, to reduce the moment broadcast storm of ether multi-ring network, improves the performance of ether multi-ring network.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of address flush method of ether multi-ring network, this method comprises:
Configuration refreshes passage on the unobstructed path between the interconnecting nodes of the subring of ether multi-ring network;
When the subring topology of described ether multi-ring network changes, and when the interconnecting nodes of the subring that topology changes need send the address flush message outside described subring, described address flush message is sent to the described node that refreshes on the passage, transmit to refresh the described address of node of refreshing on the passage.
The described mode of passage by linear virtual LAN VLAN and/or multicast medium access control MAC Address that refresh is configured.
Before the interconnecting nodes of the subring that described topology changes outwards sends the address flush message, this method further comprises: the interconnecting nodes of the subring that described topology changes, refresh the addresses forwarding table of self according to the fault warning SF message of the address flush information of receiving of carrying.
This method further comprises: the described node that refreshes on the passage refreshes the addresses forwarding table of self after receiving described address flush message, and described address flush message is transmitted to the described subsequent node that refreshes on the passage.
This method further comprises: when there is the choke point in the node of the described address flush message of reception on refreshing passage, judge that described choke point belongs to ring or subring; If belong to ring, the then described node that has a choke point sends on the control channel of the ring that has described choke point and carries the protocol massages of address flush information; If belong to subring, the then described node that has a choke point sends on the control channel of the subring that has described choke point and carries the protocol massages of address flush information, and the interconnecting nodes that triggers described subring produces new address flush message and sends to the subsequent node that refreshes on the passage.
The present invention also provides a kind of address flush device of ether multi-ring network, and this device comprises:
Refresh the channel arrangement module, be used for that configuration refreshes passage on the unobstructed path between the interconnecting nodes of the subring of ether multi-ring network;
The address flush module, be used for changing in the subring topology of described ether multi-ring network, and when the interconnecting nodes of the subring that topology changes need send the address flush message outside described subring, described address flush message is sent to the described node that refreshes on the passage, transmit to refresh the described address of node of refreshing on the passage.
Described address flush module further comprises:
Judge submodule, be used to judge whether the node that refreshes receiver address update on the passage exists the choke point, and judge that described choke point belongs to ring or subring;
Protocol massages sends submodule, is used for the judged result according to described judgement submodule, when belonging to ring in the choke point, sends on the control channel of the ring that has described choke point and carries the protocol massages of address flush information; When the choke point belongs to subring, on the control channel of the subring that has described choke point, send and carry the protocol massages of address flush information, and the interconnecting nodes that triggers described subring produces new address flush message and sends to the subsequent node that refreshes on the passage.
The described form of passage by linear VLAN and/or multicast mac address that refresh is configured.
The address flush method of a kind of ether multi-ring network provided by the present invention and device, change and interconnecting nodes need outside subring, send the Flush message time in the topology of subring, the Flush message only refreshes between the subring interconnecting nodes on the unobstructed path address of node and transmits, thereby the interconnecting nodes that makes subring only refreshes node on the unobstructed path between the interconnecting nodes to the Flush message that other ring or subring send, avoided the Flush message in other ring or subring, to spread, avoided all nodes on other network of interconnecting nodes to be refreshed the address, reduce the moment broadcast storm of ether multi-ring network, improved the performance of ether multi-ring network.
Description of drawings
Fig. 1 is the topological diagram of ether multi-ring network in the prior art;
Fig. 2 is the communication path topology figure when ether multi-ring network link is intact in the prior art;
Fig. 3 is the communication path topology figure during ether multi-ring network link failure in the prior art;
Fig. 4 is the schematic diagram of first kind of configuration mode for subring control channel in the prior art;
Fig. 5 is the schematic diagram of second kind of configuration mode for subring control channel in the prior art;
The schematic diagram of refresh address when Fig. 6 is prior art neutron loop chain road fault;
Fig. 7 is the propagation schematic diagram of Flush message between the subring interconnecting nodes in the prior art;
The schematic diagram of Fig. 8 communication path between network A of the present invention and the network B during for no link failure;
The schematic diagram of the communication path when Fig. 9 is the subring link failure between network A of the present invention and the network B;
Figure 10 is the flow chart of the address flush method of a kind of ether multi-ring network of the present invention;
Figure 11 is the address flush schematic diagram of the embodiment of the invention when refreshing the passage fault-free;
Figure 12 is the address flush schematic diagram one of the embodiment of the invention when refreshing passage and have Single Point of Faliure;
Figure 13 is the address flush schematic diagram two of the embodiment of the invention when refreshing passage and have Single Point of Faliure;
Figure 14 is the composition structural representation of the address flush device of a kind of ether multi-ring network of the present invention.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
The present invention is by analyzing and can find the ether multi-ring network address flush process in the practical application, and all other rings at refresh all interconnecting nodes place or the address of node in the subring are transmitted and be there is no need.For example, in ether multi-ring network shown in Figure 8, Ring2 is a ring, and Ring1, Ring3 and Ring4 are subrings; Node S3, S5, S4 and S10 are protection controlling links nodes, and the link direct-connected with port 32, port 51, port 42 and port one 02 is the ring protection link; Interconnecting nodes in the ether multi-ring network has S3, S7, S2, S6, S5 and S8.Under the trouble-free situation of ether multi-ring network, the communication path between network A and the network B is: network B ← → S4 ← → S3 ← → S2 ← → S6 ← → S7 ← → S8 ← → S11 ← → S10 ← → network A.Again as shown in Figure 9; link<S10 as subring Ring4; S11〉when breaking down; node S10 blocks the protected data forwarding capability of 101 ports; and open the protected data forwarding capability of 102 ports; node S11 blocks the protected data forwarding capability of 112 ports, and the communication path between network A and the network B becomes: network B ← → S4 ← → S3 ← → S2 ← → S1 ← → S5 ← → S9 ← → S10 ← → network A.
Comparing cell A and network B two communication paths in Fig. 8 and Fig. 9, can find that two communication paths have common path: S4 ← → S3 ← → S2; That is to say at subring link<S10, S11〉when breaking down, node S3 and S4 needn't transmit by refresh address, only refresh unobstructed path between the interconnecting nodes of subring of ether multi-ring network (S5 ← → S1 ← → S2 ← → S6 ← → S7 ← → address of node on S8) transmits, and just can guarantee that data can not transmit along the path of mistake.
Therefore, the basic ideas that can determine address flush method of the present invention are: when the topology of the subring of ether multi-ring network changes, and when the interconnecting nodes of the subring that changes of topology need send the Flush message outside this subring, the Flush message only refreshed between the subring interconnecting nodes on the unobstructed path address of node and transmits.
The address flush method of a kind of ether multi-ring network of the present invention of realizing based on above-mentioned basic thought as shown in figure 10, mainly may further comprise the steps:
Step 1001, configuration refreshes passage (Flush Channel) on the unobstructed path between the interconnecting nodes of the subring of ether multi-ring network.
Refreshing passage and can realize that the passage that refreshes of configuration is identified by unique VLAN ID among the present invention by configuration linear VLAN (VLAN, Virtual LocalArea Network) mode; Also can realize by the mode of configuration multicast medium access control (MAC, MediaAccess Control) address; Can also realize in conjunction with the mode of multicast mac address by linear VLAN.
Step 1002, when the subring topology of ether multi-ring network changes, the interconnecting nodes of the subring that topology changes refreshes the addresses forwarding table of self according to the SF message that has address flush information that receives, and sends the Flush message on the passage the refreshing of subring that this topology changes.
The present invention can be defined as YY with the target MAC (Media Access Control) address of Flush message, and G.8032 YY can adopt among the 01-19-A7-00-00-01 that reserves and the 01-19-A7-00-00-EF, perhaps adopts 01-19-A7-00-00-00.Can determine according to actual needs.
Behind the refreshing node on the passage and receive the Flush message of the subring that step 1003, topology change, refresh addresses forwarding table separately.
Step 1004 judges the node that receives this Flush message is refreshing whether the choke point is arranged on the passage, if having, then execution in step 1006; Otherwise, execution in step 1005.
Step 1005, the node that judge to receive this Flush message do not have the choke point refreshing on the passage, and continue to transmit this Flush message by this node on the passage refreshing.
Step 1006, judgement are that the port of ring has this choke point, or the port of subring has this choke point, if the port of ring has this choke point, then execution in step 1007; If the port of subring has this choke point, then execution in step 1008.
Step 1007, this node send on the control channel of the ring that has this choke point and carry the protocol massages of address flush information.After node receives this protocol massages from control channel on the ring, refresh separately addresses forwarding table according to the address flush information in the protocol massages.
The present invention can adopt the conduct of R-APS (sp_flush) protocol massages to carry the protocol massages of address flush information, and R-APS (sp_flush) protocol massages does not influence the protocol massages that other transmit in the transmission on the control channel on control channel.
Step 1008, this node send on the control channel of the subring that has this choke point and carry the protocol massages of address flush information.After having node in the subring of this choke point and receiving this protocol massages, refresh addresses forwarding table separately, and the interconnecting nodes of this subring after transmitting, refresh address also produces new Flush message and sends to the subsequent node that refreshes on the passage.
Further elaborate below in conjunction with the address flush method of specific embodiment the invention described above.As shown in figure 11 for refreshing the embodiment of the address flush under the passage non-failure conditions.Ring1, Ring2, Ring3 and Ring4 constitute the ether multi-ring network among the figure.Ring2 is a complete closed loop, and the node that comprises has S2, S6, S7 and S3, and the link that comprises has:<S2, S6 〉,<S6, S7 〉,<S7, S3〉and<S3, S2 〉, node S3 is a protection controlling links node, the link direct-connected with port 32 is the ring protection link; Ring1 is subring, and the node that comprises has S2, S1, S5 and S6, and the link that comprises has:<S2, S1 〉,<S1, S5〉and<S5, S6 〉, node S5 is a protection controlling links node, the link direct-connected with port 51 is the ring protection link; Ring3 is subring, and the node that comprises has S3, S4, S8 and S7, and the link that comprises has:<S3, S4 〉,<S4, S8〉and<S8, S7 〉, node S4 is a protection controlling links node, the link direct-connected with port 42 is the ring protection link; Ring4 is subring, and the node that comprises has S5, S9, S10, S11 and S8, and the link that comprises has:<S5; S9 〉,<S9, S10 〉,<S10, S11〉and<S11; S8 〉, node S10 is a protection controlling links node, the link direct-connected with port one 02 is the ring protection link.
The control channel of subring Ring4 is divided into two parts: tunnel and subring Ring4 part.The tunnel of subring Ring4 is configured on Ring1, Ring2 and the Ring3, and the Control Node S3 on the tunnel, S4 and S5 have blocking action to the message of subring Ring4.
Node S5 and S8 are the interconnecting nodes that subring Ring4 inserts other ring or subring, and subring Ring4 refreshes channel arrangement on following path: S5 ← → S1 ← → S2 ← → S6 ← → S7 ← → S8, as shown in phantom in FIG..The passage that refreshes of subring is realized by disposing linear VLAN.
Link<S10 of subring Ring4 among the figure, S11〉fault has taken place, ring protection controlling links node S10 opens the protected data forwarding capability of 102 ports, the data forwarding function of blocking 101 ports, and outwards periodically send the SF message along 102 ports.Node S11 blocks the protected data forwarding capability of 112 ports, and outwards periodically sends the SF message along 111 ports.
When interconnecting nodes S5 receive first that S10 sends have the SF message of address flush information the time, refresh the addresses forwarding table of self, and structure Flush 1 (MAC Address is YY) message, this message transmits refreshing on the passage of subring.After refreshing node S1, S2, S6, S7 and S8 on the passage and receiving Flush 1, refresh addresses forwarding table separately.It is pointed out that because the SF message is periodically to send have only and receive that first the SF message can cause that just interconnecting nodes S5 carries out the operation of address flush and triggering for generating Flush 1, follow-up SF message then can not cause the corresponding operating of interconnecting nodes S5.
Similarly, when interconnecting nodes S8 receive first that S11 sends have the SF message of address flush information the time, refresh the addresses forwarding table of self, and structure Flush 2 (MAC Address is YY) message, this message transmits refreshing on the passage of subring.After refreshing node S7, S6, S2, S1 and S5 on the passage and receiving this message, also refresh addresses forwarding table separately.
This shows, the Flush message of subring Ring4 along refresh passage (the unobstructed path S5 between the interconnecting nodes of subring Ring4 ← → S1 ← → S2 ← → S6 ← → S7 ← → S8) refresh, node S3 and S4 do not have refresh address to transmit, thereby have significantly reduced the quantity of the node that ether multi-ring network refresh address transmits.And, can guarantee that so promptly data can be along the path forwarding of mistake.
Refresh the embodiment that has the address flush under the Single Point of Faliure situation in the passage as Figure 12 with Figure 13 shows that.S5 and S8 node are the interconnecting nodes that subring Ring4 inserts other ring or subring, and subring Ring4 refreshes channel arrangement on following path: S5 ← → S1 ← → S2 ← → S6 ← → S7 ← → S8.In Figure 12, subring Ring4 does not have fault, but it refresh on the passage<S6 S7 Single Point of Faliure taken place in link.Ring Ring2 protects and switches, and the node refresh address on the ring is transmitted.Communication path between network A and the network B is: network B ← → S4 ← → S3 ← → S7 ← → S8 ← → S11 ← → S10 ← → network A.
In Figure 13, subring Ring4<S10, S11〉fault taken place again in link, and node S10 opens the protected data forwarding capability of 102 ports, the data forwarding function of port blocked 101, and outwards periodically send the SF message along 102 ports.The protected data forwarding capability of node S11 port blocked 112, and outwards periodically send the SF message along port one 11.
When interconnecting nodes S5 receive first that node S10 sends have the SF message of address flush information the time, interconnecting nodes S5 refreshes the addresses forwarding table of self, and structure Flush 1 (MAC Address is YY) message, this message transmits refreshing on the passage of subring.
After refreshing node S1, S2 on the passage and receiving Flush 1, refresh addresses forwarding table separately.Wherein node S6 receives behind the Flush 1 that also refresh address is transmitted, but it finds that obstruction has taken place the port 63 that refreshes on the passage, node S6 sends R-APS (sp_flush 1) protocol massages on the control channel of ring Ring2 (comprising port blocked 63), this protocol massages will cause that node S2, S3 and the S7 refresh address of ring on the Ring2 transmit.
Similarly, when interconnecting nodes S8 receive first that node S11 sends have the SF message of address flush information the time, interconnecting nodes S8 refreshes the addresses forwarding table of self, and structure Flush 2 (MAC Address is YY) message, and this message transmits refreshing on the passage of subring.
After refreshing node S7 on the passage and receiving Flush 2, refresh the addresses forwarding table of self, and find that obstruction has taken place the port 72 that refreshes on the passage, so node S7 sends R-APS (sp_flush 2) protocol massages on the control channel of ring Ring2 (comprising port blocked 72), this protocol massages will cause that node S3, S2 and the S6 refresh address of ring on the Ring2 transmit.
In sum, unobstructed path S5 ← → S1 ← → S2 ← → S3 ← → S7 ← → node on the S8 all carried out address flush.Network A and network B can communicate along correct path subsequently.Network B ← → S4 ← → S3 ← → S2 ← → S1 ← → S5 ← → S9 ← → S10 ← → network A is by top analysis, we as can be seen subring Ring4 refresh passage generation Single Point of Faliure after, this programme can guarantee that still the ether multi-ring network normally moves.
For realizing the address flush method of the invention described above, the present invention also provides a kind of address flush device of ether multi-ring network, and as shown in figure 14, this device comprises: interconnective channel arrangement module 10 and the address flush module 20 of refreshing.Refresh channel arrangement module 10, be used for that configuration refreshes passage on the unobstructed path between the interconnecting nodes of the subring of ether multi-ring network; Refreshing channel arrangement module 10 can adopt the form configuration of linear VLAN and/or multicast mac address to refresh passage.Address flush module 20, be used for changing in the subring topology of ether multi-ring network, and when the interconnecting nodes of the subring that topology changes need send the address flush message outside subring, the address flush message is sent to the node that refreshes on the passage, refresh on the passage address of node and transmit to refresh this.
Wherein, address flush module 20 further comprises: interconnective judgement submodule 21 and protocol massages send submodule 22.Judge submodule 21, be used to judge whether the node that refreshes receiver address update on the passage exists the choke point, and judge that this choke point belongs to ring or subring.Protocol massages sends submodule 22, is used for according to the judged result of judging submodule 21, when belonging to ring in the choke point, sends on the control channel of the ring that has the choke point and carries the protocol massages of address flush information; When the choke point belongs to subring, on the control channel of the subring that has the choke point, send and carry the protocol massages of address flush information, and the interconnecting nodes of triggering subring produces new address flush message to the subsequent node transmission that refreshes on the passage.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.

Claims (8)

1. the address flush method of an ether multi-ring network is characterized in that, this method comprises:
Configuration refreshes passage on the unobstructed path between the interconnecting nodes of the subring of ether multi-ring network;
When the subring topology of described ether multi-ring network changes, and when the interconnecting nodes of the subring that topology changes need send the address flush message outside described subring, described address flush message is sent to the described node that refreshes on the passage, transmit to refresh the described address of node of refreshing on the passage.
2. according to the address flush method of the described ether multi-ring network of claim 1, it is characterized in that the described mode of passage by linear virtual LAN VLAN and/or multicast medium access control MAC Address that refresh is configured.
3. according to the address flush method of claim 1 or 2 described ether multi-ring networks, it is characterized in that, before the interconnecting nodes of the subring that described topology changes outwards sends the address flush message, this method further comprises: the interconnecting nodes of the subring that described topology changes, refresh the addresses forwarding table of self according to the fault warning SF message of the address flush information of receiving of carrying.
4. according to the address flush method of claim 1 or 2 described ether multi-ring networks, it is characterized in that, this method further comprises: after the described node that refreshes on the passage is received described address flush message, refresh the addresses forwarding table of self, and described address flush message is transmitted to the described subsequent node that refreshes on the passage.
5. according to the address flush method of the described ether multi-ring network of claim 4, it is characterized in that this method further comprises: when there is the choke point in the node of the described address flush message of reception on refreshing passage, judge that described choke point belongs to ring or subring; If belong to ring, the then described node that has a choke point sends on the control channel of the ring that has described choke point and carries the protocol massages of address flush information; If belong to subring, the then described node that has a choke point sends on the control channel of the subring that has described choke point and carries the protocol massages of address flush information, and the interconnecting nodes that triggers described subring produces new address flush message and sends to the subsequent node that refreshes on the passage.
6. the address flush device of an ether multi-ring network is characterized in that, this device comprises:
Refresh the channel arrangement module, be used for that configuration refreshes passage on the unobstructed path between the interconnecting nodes of the subring of ether multi-ring network;
The address flush module, be used for changing in the subring topology of described ether multi-ring network, and when the interconnecting nodes of the subring that topology changes need send the address flush message outside described subring, described address flush message is sent to the described node that refreshes on the passage, transmit to refresh the described address of node of refreshing on the passage.
7. according to the address flush device of the described ether multi-ring network of claim 6, it is characterized in that described address flush module further comprises:
Judge submodule, be used to judge whether the node that refreshes receiver address update on the passage exists the choke point, and judge that described choke point belongs to ring or subring;
Protocol massages sends submodule, is used for the judged result according to described judgement submodule, when belonging to ring in the choke point, sends on the control channel of the ring that has described choke point and carries the protocol massages of address flush information; When the choke point belongs to subring, on the control channel of the subring that has described choke point, send and carry the protocol massages of address flush information, and the interconnecting nodes that triggers described subring produces new address flush message and sends to the subsequent node that refreshes on the passage.
8. according to the address flush device of claim 6 or 7 described ether multi-ring networks, it is characterized in that the described form of passage by linear VLAN and/or multicast mac address that refresh is configured.
CN2009100793873A 2009-03-09 2009-03-09 Ethernet multiple-ring network address refreshing method and device Expired - Fee Related CN101834770B (en)

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