CN101662329A - Switching method, network nodes and network system - Google Patents
Switching method, network nodes and network system Download PDFInfo
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- CN101662329A CN101662329A CN200810210181A CN200810210181A CN101662329A CN 101662329 A CN101662329 A CN 101662329A CN 200810210181 A CN200810210181 A CN 200810210181A CN 200810210181 A CN200810210181 A CN 200810210181A CN 101662329 A CN101662329 A CN 101662329A
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Abstract
The embodiment of the invention discloses a switching method and a switching system in a network, which relate to the field of communication and solve the problem that the time of nodes staying in a recovery and wait state is not consistent with a threshold of a recovery and wait timer of the nodes in the network. The switching method comprises the following steps: detecting the recovery information of a working channel by a home node; starting the timer by the home node; switching the state by the home node when the timer is over time; and executing recovery switching by the home node. Aftera working path is failed and recovered, nodes at both ends of the working path all enter the wait and recovery state so as to respectively start wait and recovery timers at both ends. When the wait and recovery timers are over time, corresponding nodes enter a non-request state from the wait and recovery state. The invention can be applied to a 1+1 structure and a 1:1 structure of an automatic protecting and switching system and definite a state switching mechanism of the nodes in the network.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of reverse method, system.
Background technology
APS (APS, Automatic Protection Switching) is one of self-healing mechanism that adopts among SDH (Synchronous Digital Hierarchy) SDH and the Synchronous Optical Network SONET.APS makes service signal between two terminals in path from service aisle auto switching to the protection passage of an inefficacy, and finishes follow-up resuming work.Recover professional by switching, the protection of point-to-point is provided for network to stand-by equipment.
In existing protection turning protocol; path in two nodes is operated in 1+1 or the two-way recovery and protection pattern of 1:1 following time; lost efficacy if two-way service aisle takes place, will switch by trigger protection, and service signal was switched on the protection passage by service aisle transmits.
After after a while, if service aisle recovers, path two end nodes enter Wait-to-Restore (WTR, Wait to Restore) state.All have a Wait-to-Restore timer at the two ends of service path, the time of Wait-to-Restore state continuance is determined by Wait-to-Restore state timer thresholding.
After the Wait-to-Restore timer at service path two ends was all overtime, if losing efficacy does not appear during timing in service aisle again, then two end nodes switched to no solicited status by the Wait-to-Restore state, and recovery and protection is switched.At this moment, service signal is returned on the service aisle by the protection channel switching and transmits.
In the recovery and protection reversed process of stating in realization, the inventor finds that there are the following problems at least in the prior art: because the thresholding of two Wait-to-Restore timers is separate, so the timer thresholding may be different; When the thresholding of the Wait-to-Restore timer at two ends was inconsistent, timer expiry represented that node can recover to switch, but its state remains the Wait-to-Restore state, so the state of node is not corresponding with the node actual state.
Summary of the invention
On the one hand, the embodiment of the invention provides a kind of reverse method.
A kind of reverse method comprises:
The local terminal node detection starts timer after the service aisle recovering information;
If timer expiry, this end node switches to no solicited status by the Wait-to-Restore state;
This end node returns service signal to the service aisle transmission by the protection channel switching.
On the other hand, the embodiment of the invention provides a kind of network node.
A kind of network node comprises:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after described state handover module switches to no solicited status, during the second no request message of receiving that peer node sends, service signal is returned the service aisle transmission by the protection channel switching.
The peer node of described network node comprises:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after receiving the first no request message that peer node is sent,, service signal is returned the service aisle transmission by the protection channel switching if described state handover module switches to no solicited status.
A kind of network system comprises: first node and Section Point.
First node comprises:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after described state handover module switches to no solicited status, during the second no request message of receiving that peer node sends, service signal is returned the service aisle transmission by the protection channel switching.
Section Point comprises:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after receiving the first no request message that peer node is sent,, service signal is returned the service aisle transmission by the protection channel switching if described state handover module switches to no solicited status.
After first node detects the service aisle recovering information, start first timer; After Section Point detects the service aisle recovering information, start second timer;
After described first timer is overtime, switch to no solicited status, send the first no request message by the Wait-to-Restore state;
After described Section Point receives the described first no request message,, business is returned service aisle by the protection channel switching, send the second no request message if timer expiry then switches to no solicited status by the Wait-to-Restore state;
After described first node receives the described second no request message, business is returned service aisle by the protection channel switching.
The embodiment of the invention is under the situation of Wait-to-Restore state simultaneously at path two end nodes, and this end node Wait-to-Restore state duration is only determined by the Wait-to-Restore timer thresholding of this end node.The pairing node of first timer then just leaves the recovery wait state at timer then, enters no solicited status, not influenced by opposite end Wait-to-Restore timer.Local terminal Wait-to-Restore state duration and the inconsistent problem of Wait-to-Restore timer thresholding that prior art is brought have been solved.
The embodiment of the invention if the Wait-to-Restore timer of peer node is not overtime, is not then switched recovery when node state changes, service signal still transmits on the protection passage, has guaranteed quality of service.
The embodiment of the invention is applicable to MPLS (Multi-Protocol Label Switching, multiprotocol label switching), ETH (Ethernet, Ethernet), T-MPLS network environments such as (Transport Multi-Protocol LabelSwitching transmit multiprotocol label switching).
Description of drawings
Fig. 1 is the flow chart that the recovery reverse method of arbitrary protection passage two end nodes in the network of the embodiment of the invention is used;
Fig. 2 is the 1:1 automatic Protective Switching System for Optical structural representation of prior art;
Fig. 3 switches service signal to the flow chart of protection passage by service aisle for the 1:1 automatic Protective Switching System for Optical of prior art;
Fig. 4 switches service signal to the flow chart of protection passage by service aisle for the 1+1 automatic Protective Switching System for Optical of prior art;
Fig. 5 is switched to the flow chart of no solicited status by the Wait-to-Restore state for two end nodes in the embodiment of the invention;
Fig. 6 is returned service signal the flow chart of service aisle by the protection channel switching for the 1:1 automatic Protective Switching System for Optical of prior art;
Fig. 7 is returned service signal the flow chart of service aisle by the protection channel switching for the 1+1 automatic Protective Switching System for Optical of prior art;
Fig. 8 is the schematic diagram of a kind of structure of network node in the embodiment of the invention
Embodiment
The embodiment of the invention provides a kind of reverse method, device and system, can solve local terminal Wait-to-Restore state duration and the inconsistent problem of local terminal Wait-to-Restore timer thresholding.
As shown in Figure 1, a kind of reverse method comprises:
101, the local terminal node detection starts timer after the service aisle recovering information;
If 102 timer expiries, this end node switches to no solicited status by the Wait-to-Restore state;
103, this end node returns service signal to the service aisle transmission by the protection channel switching.
The embodiment of the invention is under the situation of Wait-to-Restore state simultaneously at path two end nodes, and each node Wait-to-Restore state duration is only determined by the Wait-to-Restore timer thresholding of this node.The pairing node of first timer then just leaves the recovery wait state at timer then, enters no solicited status, not influenced by another Wait-to-Restore timer.Node Wait-to-Restore state duration and the inconsistent problem of Wait-to-Restore timer thresholding that prior art is brought have been solved.
For the ease of understanding the method that the embodiment of the invention provides, at first the applied system of the embodiment of the invention is done one and simply introduce: automatic Protective Switching System for Optical comprises: 1+1 automatic Protective Switching System for Optical and 1:1 automatic Protective Switching System for Optical.Other also comprises protected modes such as 1:N, is suitable for the present invention equally, is identical but those skilled in the art will be appreciated that their principle, because hereinafter be not described separately.The operation of automatic Protective Switching System for Optical comprises: the process that, is switched to the protection passage by service aisle; Two, the Wait-to-Restore process of switching; Three, return the process of service aisle by the protection channel switching.
Below the 1:1 automatic Protective Switching System for Optical is described in detail.
As shown in Figure 2, the 1:1 automatic Protective Switching System for Optical comprises at least two node A, B; Be equipped with service aisle between node A, the B; Service aisle comprises first passage and second channel; Node A uses first passage to send information, uses second channel to receive information; Node B uses second channel to send information, uses first passage to receive information;
Be equipped with the protection passage between node A, the B; The protection passage comprises third channel and four-way.When using protection channel transfer business datum: node A uses third channel to send information, uses four-way to receive information; Node B uses four-way to send information, uses third channel to receive information;
Node A, B respectively are equipped with one and recover waiting timer;
In normal operation, A, B two nodes send and receive service signal by service aisle.A, B two nodes send and receive service signal by the protection passage after service aisle takes place to lose efficacy.
The difference of 1+1 automatic Protective Switching System for Optical and 1:1 automatic Protective Switching System for Optical is:
First passage and third channel are at A node bridge joint; Second channel and four-way are at B node bridge joint;
In normal operation, the A node receives service signal by first passage and third channel synchronized transmission service signal by second channel; The B node receives service signal by second channel and four-way synchronized transmission service signal by first passage.After service aisle lost efficacy, A, B two nodes sent and receive service signal by the protection passage.
One, following is example with Fig. 2 network configuration, and the operation of 1+1 and 1:1 automatic Protective Switching System for Optical is introduced respectively:
At first the 1:1 automatic Protective Switching System for Optical is described in detail service signal by the process that service aisle is switched to the protection passage.
As shown in Figure 3, in the 1:1 automatic Protective Switching System for Optical, the service signal that A, B two nodes transmit is as follows by the process that service aisle is switched to the protection passage:
301, suppose that the B node detection goes out first passage generation Signal Fail, the B node sends switching request by four-way to the A node;
302, the switching request of A node response B node at A node one end, is carried out bridge joint with first passage and third channel;
303, the A node sends confirmation and reverse switching request by third channel to the B node;
304, after the B node is received confirmation, finish professional by first passage switching to third channel;
305, the reverse switching request of B node response A node at B node one end, is carried out bridge joint with second channel and four-way;
306, the B node sends confirmation to the A node;
307, the A node is received confirmation, finishes professional by second channel switching to four-way.So far, the two-way reversed process under the 1:1 pattern finishes.
Below the 1+1 automatic Protective Switching System for Optical is described in detail service signal by the process that service aisle is switched to the protection passage.
As shown in Figure 4, in the 1+1 automatic Protective Switching System for Optical, the service signal that A, B two nodes transmit is as follows by the process that service aisle is switched to the protection passage:
401, suppose that the B node detection goes out first passage generation Signal Fail, the B node sends switching request by four-way to the A node;
402, the switching request of A node response B node sends confirmation and reverse switching request by third channel to the B node;
403, after the B node is received confirmation, finish professional by first passage switching to third channel;
404, the reverse switching request of B node response A node sends confirmation to the A node;
405, the A node is received confirmation, finishes professional by second channel switching to four-way.So far, the two-way reversed process under the 1+1 pattern finishes.
Two, following is example with Fig. 2 network configuration, and the process (being embodiment of the invention reverse method) that Wait-to-Restore is switched describes in detail.
As shown in Figure 1, a kind of reverse method comprises:
101, the local terminal node detection starts timer after the service aisle recovering information;
In the embodiment of the invention, A, B two nodes start the Wait-to-Restore timer of local terminal respectively after detecting the service aisle recovering information; The timer thresholding can be defined voluntarily by the network operation person.This end node refers to A node or B node, when this end node is A, is meant that the A node detection after service aisle recovery message, starts the Wait-to-Restore timer of self; When this end node is B, be meant that the B node detection after service aisle recovery message, starts the Wait-to-Restore timer of self.
If 102 timer expiries, this end node switches to no solicited status by the Wait-to-Restore state.Below with the 501-506 step how A, B two nodes specifically being carried out 102 steps respectively is specifically described, step 501-503 mainly describes the operation of A node, step 504-506 mainly describes the operation of B node, and step 501-506 described switching services from integral body, and how A, B node cooperatively interact is finished 102 steps jointly.
As shown in Figure 5,
501, first timer then;
In this example, the Wait-to-Restore timer thresholding of A node is shorter, so the Wait-to-Restore timer that A is ordered is earlier overtime;
502, the node of this timer correspondence switches to no solicited status by the Wait-to-Restore state;
In this example, behind the Wait-to-Restore timer expiry of A node, the A node switches to no solicited status by the Wait-to-Restore state;
503, this node sends the first no solicited message to peer node;
In this example, after the A node enters into no solicited status by the Wait-to-Restore state, send the first no solicited message to the B node; Carry message in this no solicited message, indication A node is in no solicited status, and service signal is still by the protection channel transfer;
504, another timer is also overtime;
In this example, the thresholding of the Wait-to-Restore timer of B node correspondence is longer, so B is later overtime;
505, described node switches to no solicited status by the Wait-to-Restore state;
Because the B node receives the first no request message that the A node sends, so the B node content of carrying according to the first no request message, behind the Wait-to-Restore timer expiry, the B node switches to no solicited status by the Wait-to-Restore state;
506, the node to first overtime timer correspondence sends the second no solicited message;
After the B node switches to no solicited status by the Wait-to-Restore state, send the second no solicited message to the A node; Carry message in this no solicited message, indication B node is in no solicited status, and service signal returns the service aisle transmission by the protection channel switching.
103, this end node returns service signal to the service aisle transmission by the protection channel switching.Be specially:
When this section node was B, this step specifically referred to: the B node returns service signal to service aisle transmission by the protection channel switching after 505 steps switch to no solicited status, and this step can be before or after step 506, or carries out simultaneously;
When this section node was B, this step specifically referred to: after the A node is received the second no request message, according to the state of oneself and the content of message, service signal is returned the service aisle transmission by the protection channel switching.Of particular note: the above-mentioned first no request message and the second no request message carry all is current states of the node that initiates a message, comprehensively make judgement by the node of receiving message according to message content and the situation of self, carry out state and switch or switching services.Those skilled in the art know that obviously the first no request message and the second no request message also can be other any type of contents, as long as this message is enough to reach and allows the recipient carry out foregoing switching or switching operation.For example: the first no request message also can not carry the node status information of node A and the business transmission situation information of node A, and only is an order.The node that message is received in this order indication switches to no solicited status by the Wait-to-Restore state behind the Wait-to-Restore timer expiry.Because in the communications field, similar embodiment is too many, describes in detail no longer one by one at this.
Described service signal is returned in the process of service aisle transmission by the protection channel switching, the Switchover mechanism and the indifference of 1+1 automatic Protective Switching System for Optical and 1:1 automatic Protective Switching System for Optical are so be example with the 1:1 automatic Protective Switching System for Optical.1+1 automatic Protective Switching System for Optical and 1:1 automatic Protective Switching System for Optical in like manner repeat no more.
Three, as shown in Figure 6, the 1:1 automatic Protective Switching System for Optical is comprised service signal by the step that the protection channel switching returns service aisle:
601, the B node is with second channel and four-way bridge joint;
602, the B node sends confirmation and oppositely recovers switching request to the A node by four-way;
603, the A node is received the affirmation information of B node, finishes service signal by four-way switching to second channel;
604, the reverse recovery switching request of A node response B node is with first passage and third channel bridge joint;
605, the A node sends confirmation by third channel to the B node;
606, the B node is received the affirmation information of A node, finishes service signal by third channel switching to first passage.
So far, the recovery and protection reversed process under the 1:1 pattern finishes.
As shown in Figure 7, the 1+1 automatic Protective Switching System for Optical is comprised service signal by the step that the protection channel switching returns service aisle:
701, the B node sends the recovery switching request to the A node;
702, the A node is finished service signal by four-way switching to second channel;
703, the A node sends confirmation and oppositely recovers switching request to the B node by third channel;
704, the B node is received the reverse switching recovery request of A node, finishes service signal by third channel switching to first passage;
705, the B node sends confirmation to the A node;
So far, the recovery and protection reversed process under the 1+1 pattern finishes.
Below a kind of network node in the embodiment of the invention is described in detail.
The embodiment of the invention provides a kind of network node, is used to carry out said method.
A kind of network node comprises:
As shown in Figure 8, information detection module 801 is used for testing routing restoration information;
Timer starts module 802, is used for after described information detection module detects the service aisle recovering information, starts timer;
Switch and recover module 804, be used for after described state handover module switches to no solicited status, during second the no request message of receiving that peer node sends, service signal is transmitted by protecting channel switching to return service aisle.
The peer node of described network node comprises:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after receiving the first no request message that peer node is sent,, service signal is returned the service aisle transmission by the protection channel switching if described state handover module switches to no solicited status.
The embodiment of the invention also provides a kind of network system, is used to carry out embodiment of the invention reverse method.
A kind of network system comprises: first node and Section Point.
Described first node comprises:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after described state handover module switches to no solicited status, during the second no request message of receiving that peer node sends, service signal is returned the service aisle transmission by the protection channel switching.
Described Section Point comprises:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after receiving the first no request message that peer node is sent,, service signal is returned the service aisle transmission by the protection channel switching if described state handover module switches to no solicited status.
After first node detects the service aisle recovering information, start first timer; After Section Point detects the service aisle recovering information, start second timer;
After described first timer is overtime, switch to no solicited status, send the first no request message by the Wait-to-Restore state;
After described Section Point receives the described first no request message,, business is returned service aisle by the protection channel switching, send the second no request message if timer expiry then switches to no solicited status by the Wait-to-Restore state;
After described first node receives the described second no request message, business is returned service aisle by the protection channel switching.
One of ordinary skill in the art will appreciate that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (12)
1, a kind of reverse method is characterized in that, comprising:
The local terminal node detection starts timer after the service aisle recovering information;
If timer expiry, this end node switches to no solicited status by the Wait-to-Restore state;
This end node returns service signal to the service aisle transmission by the protection channel switching.
2, reverse method in the network according to claim 1 is characterized in that, if described timer expiry, this end node switches to no solicited status by the Wait-to-Restore state, further comprises before:
This end node receives the first no request message that peer node sends.
3, reverse method in the network according to claim 2 is characterized in that, the described first no solicited message is indicated described peer node:
Entered no solicited status, service signal is still in the protection channel transfer.
4, reverse method in the network according to claim 2 is characterized in that,
The response message of the Wait-to-Restore information that the described first no request message is a peer node to be sent this end node.
5, reverse method in the network according to claim 1 is characterized in that, described end node returns service signal to the service aisle transmission by the protection channel switching, further comprises before:
This end node receives the second no solicited message that peer node is sent.
6, reverse method in the network according to claim 5 is characterized in that, the described second no solicited message indication peer node:
Entered no solicited status, service signal is switched to service aisle.
7, a kind of network node is characterized in that, comprising:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after described state handover module switches to no solicited status, during the second no request message of receiving that peer node sends, service signal is returned the service aisle transmission by the protection channel switching.
8, network node according to claim 7 is characterized in that, the described second no solicited message is used to indicate peer node:
Entered no solicited status, service signal is switched to service aisle.
9, a kind of network node is characterized in that, comprising:
The information detection module is used for testing routing restoration information;
Timer starts module, is used for after described information detection module detects the service aisle recovering information, starts timer;
The state handover module is used for behind described timer expiry, and the state of described network node is switched to no solicited status by the Wait-to-Restore state;
Switch the recovery module, be used for after receiving the first no request message that peer node is sent,, service signal is returned the service aisle transmission by the protection channel switching if described state handover module switches to no solicited status.
10, network node according to claim 9 is characterized in that, the described first no solicited message is used to indicate described peer node:
Entered no solicited status, service signal is still in the protection channel transfer.
11, a kind of network system is characterized in that, comprises the described node of claim 7-10.
12, a kind of reverse method is characterized in that, comprising:
After first node detects the service aisle recovering information, start first timer; After Section Point detects the service aisle recovering information, start second timer;
After described first timer is overtime, switch to no solicited status, send the first no request message by the Wait-to-Restore state;
After described Section Point receives the described first no request message,, business is returned service aisle by the protection channel switching, send the second no request message if timer expiry then switches to no solicited status by the Wait-to-Restore state;
After described first node receives the described second no request message, business is returned service aisle by the protection channel switching.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012155667A1 (en) * | 2011-07-15 | 2012-11-22 | 中兴通讯股份有限公司 | Processing method, device and system after disappearance of fault on bidirectional work path |
| WO2012162982A1 (en) * | 2011-09-20 | 2012-12-06 | 华为技术有限公司 | Aps service channel switching method and system, and aps device |
| CN102857316A (en) * | 2011-06-29 | 2013-01-02 | 中兴通讯股份有限公司 | Method and system for realizing source looped network protection |
| WO2015168892A1 (en) * | 2014-05-08 | 2015-11-12 | 华为技术有限公司 | Protection switching method, node and control device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836729B (en) * | 2015-05-19 | 2018-09-11 | 瑞斯康达科技发展股份有限公司 | A kind of method of linear protection switching, PE equipment and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11225128A (en) * | 1998-02-05 | 1999-08-17 | Fujitsu Ltd | Terminal station in synchronous communications network, mismatching detector for active and standby switch function and its method |
| CN1129261C (en) * | 1999-07-15 | 2003-11-26 | 华为技术有限公司 | Protective reversing and detecting method of synchronously triggered multiplexing band under multiple securities mechanism |
| CN100440746C (en) * | 2003-12-01 | 2008-12-03 | 中兴通讯股份有限公司 | A method for multi-port multi-link communication network backup control and apparatus therefor |
| CN101141364A (en) * | 2006-09-07 | 2008-03-12 | 华为技术有限公司 | Method and device for implementing protection rearrangement in ring ethernet |
-
2008
- 2008-08-29 CN CN 200810210181 patent/CN101662329B/en active Active
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| CN102857316A (en) * | 2011-06-29 | 2013-01-02 | 中兴通讯股份有限公司 | Method and system for realizing source looped network protection |
| CN102857316B (en) * | 2011-06-29 | 2016-12-07 | 中兴通讯股份有限公司 | A kind of method and system realizing source looped network protection |
| WO2012155667A1 (en) * | 2011-07-15 | 2012-11-22 | 中兴通讯股份有限公司 | Processing method, device and system after disappearance of fault on bidirectional work path |
| WO2012162982A1 (en) * | 2011-09-20 | 2012-12-06 | 华为技术有限公司 | Aps service channel switching method and system, and aps device |
| CN103119893A (en) * | 2011-09-20 | 2013-05-22 | 华为技术有限公司 | APS service channel switching method and system, and APS device |
| US8908506B2 (en) | 2011-09-20 | 2014-12-09 | Huawei Technologies Co., Ltd. | Method and system for switching APS service channel and automatic protection switching device |
| WO2015168892A1 (en) * | 2014-05-08 | 2015-11-12 | 华为技术有限公司 | Protection switching method, node and control device |
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| CN101662329B (en) | 2013-08-28 |
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