CN102185712B - The reverse method of VPLS network and ethernet ring network and device - Google Patents
The reverse method of VPLS network and ethernet ring network and device Download PDFInfo
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- CN102185712B CN102185712B CN201110111221.2A CN201110111221A CN102185712B CN 102185712 B CN102185712 B CN 102185712B CN 201110111221 A CN201110111221 A CN 201110111221A CN 102185712 B CN102185712 B CN 102185712B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/66—Layer 2 routing, e.g. in Ethernet based MAN's
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/68—Pseudowire emulation, e.g. IETF WG PWE3
Abstract
The invention discloses reverse method and the device of a kind of VPLS network and ethernet ring network, said method comprises: the PE in VPLS network detects descending fault, when descending fault being detected, detects that the PE of fault blocks port corresponding to this fault; Detect that other PE that the PE of fault notifies in VPLS network deletes the MAC Address in VPLS network corresponding to above-mentioned fault; PE in VPLS network sets up new forward-path.By technical scheme provided by the invention, the state variation VPLS network of access looped network interior joint solves in prior art owing to can not perceive, and the problem that the flow access looped network causing VPLS network to issue does not receive, and then reach the enhancing transmission stability of Ethernet, the effect of robustness.
Description
Technical field
The present invention relates to the communications field, in particular to reverse method and the device of a kind of VPLS (Virtual Private LAN Service, VPLS) network and ethernet ring network.
Background technology
Along with the development of ethernet technology, ethernet network scale is increasing.Current carrier ethernet circuit is widely used, and therefore just seeming to the protection of ethernet ring network link is even more important.
In existing networking, network plan is all layered arrangement, and Ethernet institutional framework is divided into three levels: Access Layer, convergence-level and core layer.In order to ensure the normal operation of business; corresponding protection mechanism is needed to protect; convergence-level generally uses two layers of Ethernet looped network protection; core layer is generally the business that each operator provides; core network provides multi-multipoint business model; typically VPLS networking; VPLS network also has a lot of guard method such as TE FRR (Traffic Engineer FastReRoute; traffic engineering Quickly regroup); LDP FRR (Label Distribution Protocol Fast ReRoute, tag distribution protocol Quickly regroup) etc.
In Ethernet ring protection system; be provided with multiple protected field; each protected field is usually by a host node (Master) with multiplely jointly to form from node (Slave); each protected field can realize VLAN (VirtualLocal Area Network, the business VLAN) function forwarded based on user data service.In each protected field, time under normal circumstances, on host node meeting choke ring, the business of a port forwards, anti-loops, when be checked through break down in loop time, the physics forwarding capability of described port blocked can be set to effectively by host node, the normal forwarding of guarantee business, refresh port MAC (MediumAccess Control can be sent simultaneously, medium access control) the FLUSH message (i.e. MAC Address update) of address, node on such ring receives this message will refresh corresponding port mac address table, node on ring will relearn the MAC Address of message, construct new topological structure.
In VPSL networking, by setting up the PW (Pseudo Wire, pseudo-line) between each website, the message of user (comprising two three-tier messages) transparent transmission between each website.Provider edge router equipment (being labeled as PE) is needed to the source MAC of the study message when forwarding user's message, and establish corresponding forwarding-table item, mapping relations between completing user access AC (Attachment Circuit, access link) and PW.And operator backbone router device (being labeled as P) provides tunnelling function, only need according to MPLS (Multi-Protocol Label Switching, multiprotocol label switching) label carries out MPLS forwarding, the user's message information not needing concerned with internal to encapsulate.
In the networking that access looped network and VPLS network dock, because the state variation VPLS network of access looped network interior joint can not perceive, so the flow access looped network that VPLS network can be caused to issue does not receive, cause the obstructed of flow.For this problem, at present effective solution is not yet proposed.
Summary of the invention
Main purpose of the present invention is the reverse method and the device that provide a kind of VPLS network and ethernet ring network, to solve the problem.
According to an aspect of the present invention, providing the reverse method of a kind of VPLS network and ethernet ring network, comprising: the PE in VPLS network detects descending fault, when descending fault being detected, detecting that the PE of fault blocks port corresponding to this fault; Detect that other PE that the PE of fault notifies in VPLS network deletes the MAC Address in VPLS network corresponding to above-mentioned fault; PE in VPLS network sets up new forward-path.
According to a further aspect in the invention, provide a kind of changeover apparatus being arranged in VPLS network on the PE of VPLS network and ethernet ring network, comprise: detecting blocking module, for detecting descending fault, and blocking port corresponding to this fault when descending fault being detected; Signalling trouble module, for notifying that other PE in VPLS network deletes VPLS net MAC Address corresponding to above-mentioned fault; Module is set up in path, for setting up new forward-path.
Pass through the present invention, adopt by finding that the PE of descending fault blocks this non-working port, and notify that other PE deletes the MAC Address of response, and set up the scheme of new forward-path, the state variation VPLS network of access looped network interior joint solves in prior art owing to can not perceive, and the problem that the flow access looped network causing VPLS network to issue does not receive, and then reach the enhancing transmission stability of Ethernet, the effect of robustness.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the VPLS network of the embodiment of the present invention and the reverse method of ethernet ring network;
Fig. 2 is the flow chart of VPLS network according to example of the present invention and ethernet ring network networking and troubleshooting;
Fig. 3 is the structural representation of VPLS network according to example of the present invention and ethernet ring network mixed networking;
Fig. 4 be according to the ethernet ring network fault of example of the present invention before data flow move towards schematic diagram;
Fig. 5 be break down according to the AC of example of the present invention and ethernet ring network does not notify VPLS network time data flow move towards schematic diagram;
Fig. 6 breaks down according to the AC of example of the present invention, and the message that PE sends PE nodes all in FLUSH message notifying VPLS networking moves towards schematic diagram;
Fig. 7 breaks down according to the AC of example of the present invention, and broadcast data stream moves towards schematic diagram;
Fig. 8 breaks down according to the AC of example of the present invention, newly-established forward-path transmitting data flow move towards schematic diagram;
Fig. 9 is the structured flowchart according to the VPLS network of the embodiment of the present invention and the changeover apparatus of ethernet ring network;
Figure 10 is the structured flowchart of the changeover apparatus of VPLS network and ethernet ring network according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Fig. 1 is the flow chart according to the VPLS network of inventive embodiments and the reverse method of ethernet ring network.As shown in Figure 1, comprise according to the VPLS network of inventive embodiments and the reverse method of ethernet ring network:
Step S102, the PE in VPLS network detects descending fault, when descending fault being detected, detects that the PE of fault blocks port corresponding to this fault;
Step S104, detects that other PE that the PE of fault notifies in VPLS network deletes the MAC Address in VPLS network corresponding to this fault;
Step S106, the PE in VPLS network sets up new forward-path.
Said method is applied in the mixed networking comprising ethernet ring network and VPLS network, in the prior art, because VPLS network can not perceive the state variation of node in ethernet ring network, so the flow ethernet ring network that VPLS network may be caused to issue does not receive.Said method is for this problem, first, PE adds fault detection capability, make VPLS network can perceive the state variation of node in ethernet ring network in time, and further provide the solution of fault, namely by finding that the PE of fault blocks port corresponding to fault and notifies that other PE deletes at this VFI (Virtual Forward Instance, Virtual Switch Instance) in MAC Address corresponding to this fault (the corresponding VFI of transmission of each concrete data flow, Multi-instance can be set up) in a VPLS network, make all PE in VPLS network can mask this fault, and re-establish forward-path continuation sending flow rate, thus solve the problems of the prior art at one stroke, greatly strengthen the transmission stability of Ethernet, robustness.
Preferably, step S104 may further include following process:
(1) detect that the PE of fault sends the FLUSH message refreshing upper row address;
(2) other PE in VPLS network receives this FLUSH message, refreshes mac address table, deletes the MAC Address in VPLS network corresponding to this fault.
In specific implementation process, the port that other the PE of FLUSH message notifying that application refreshes upper row address gets clogged, it is the most convenient to implement, and efficiency is very high, and the PE receiving FLUSH message can refresh the mac address table of oneself immediately thus delete MAC Address corresponding to fault.It should be noted that, detecting that first the PE of fault can refresh oneself mac address table when blocking port corresponding to fault deletes corresponding MAC Address.
Preferably, step S106 may further include following process: detect that the PE of fault broadcasting user side in VPLS network sends to the data flow of this PE, other PE in VPLS network receives this broadcast data stream, according to the mac address table after refreshing, determine new forwarding topology, set up new forward-path.
The port block that the PE of fault is corresponding by fault detected and after deleting corresponding MAC Address, new user's side data flow to reach this PE time, get clogged due to original route so just can not find corresponding forward-path, now this PE just needs in whole VPLS network, broadcast this data flow (message), thus determine new forwarding topology structure, and set up new forward-path further on this basis.
Preferably, the PE in VPLS network to the method that descending fault detects can comprise following one of at least: physical scan is carried out to port, the corresponding alarm received in ethernet ring network, carries out linkhello detection.
PE initiatively can carry out fault detect, such as, port is carried out to physical scan, carries out linkhello detection, also can utilize alarm function in ethernet ring network, the corresponding alarm of receiving alarm module, indirectly detection failure.In fact, may be used for fault detection method of the present invention at present and also have a lot, be not limited to said method.
Below in conjunction with example and Fig. 2 to Fig. 8, above-mentioned preferred enforcement is described in detail.
Fig. 2 is the flow chart of VPLS network according to example of the present invention and ethernet ring network networking and troubleshooting, comprises networking and troubleshooting two parts.As shown in Figure 2, comprise the following steps:
Step S202, configuration ethernet ring network, or other looped network agreement, usual configuration looped network needs to configure a unique host node, other node is transit (transmission) node, there are three ether ring topologys as shown in Figure 3, each ring has a host node, all the other nodes are transit node, each ring blocks a physical port, on such ring, any 2 communications only have a passage in logic, the generation of anti-loops, thus avoid the generation of message broadcasting storm, enter step S204;
Step S204, the full VPLS network connected of configuration, VPLS network is made up of equipment such as PE, operator backbone routers (being labeled as P), specify PE, P equipment respectively, set up pseudo-line PW between PE and PE, what be connected with PE is the Customer Edge router (being labeled as CE) of ethernet ring network, and the link between CE and PE is AC, pseudo-line PW operates on public network tunnel, and the MPLS label that public network tunnel runs exchanges.Above-mentioned ethernet ring network and VPLS network mixed networking, enter step S206;
Step S206, detect AC sidelinks, can detect link failure by detection module, current detection module has a lot, as the physical scan to port, the corresponding alarm of alarm module, detection of link hello etc., enters step S208;
Step S208, if AC sidelinks fault detected, PE equipment needs to send refresh address FLUSH message to up VPLS network, enters step S210;
Step S210, PW is found by corresponding AC, then stamp public network label and be sent to each PE equipment of VPLS, each PE equipment of VPLS network receives this FLUSH message and refreshes corresponding MAC Address list item later, such next time (data flow) message arrives PE equipment, if search less than corresponding forwarding-table item, this message can be broadcasted in same VFI, relearn new forwarding topology, such downlink traffic is just unlikely to interrupt, by the time, after new forwarding-table item is set up, later data flow just forwards according to new forward-path.
Such scheme is mainly used in the mixed networking comprising ethernet ring network and VPLS network, time its main purpose is to prevent looped network state variation, VPLS network does not perceive, thus still according to the forwarding before looped network state variation when making VPLS network forwarding data, cause the obstructed of downstream.The PE that notice AC surveys when ethernet ring network change, corresponding PW is found by the port of AC side, send the FLUSH message refreshing MAC Address, PE all in such VPLS network refreshes MAC table based on corresponding PW after receiving this message, the corresponding MAC address entries of data search later like this, this data will be broadcasted in same VFI less than corresponding MAC address entries if searched, each PE receiving this message can learn corresponding forwarding-table item simultaneously, and next message will send data according to the forwarding topology of new study.
Fig. 3 is the structural representation of VPLS network according to example of the present invention and ethernet ring network mixed networking.Below based on the mixed networking shown in Fig. 3, the embody rule of such scheme is described.
As shown in Figure 3, set up ring-network topology, have three looped networks, CE1CE2 forms the superiors' looped network, and S1 (S also represents switch, is the Private Branch Exchange PBX connecting user), CE1, CE2 and S2, CE1, CE2 form two other looped network respectively.PE1, PE2, PE3, PE4 and all the other all P equipment composition VPLS network.Wherein, the trend of VPLS network forwarding data is: CE1 send user's message, is linked into PE1 by AC, after PE1 receives message, selecting corresponding PW according to transmitting, transmitting press-in PW label according to PW, and delivering to outer layer tunnel, through arrival opposite end, public network tunnel PE2, after PE2 equipment receives message, search according to corresponding PW, user's message is sent to corresponding AC, the skin that P equipment is only used for public network exchanges, and is indifferent to inner PW data.
As shown in Figure 4, the basis of networking shown in Fig. 3 adds S3, S4, CE3, CE4, wherein, S3, S4 are as the source of downstream data flow, and CE3, CE4 are respectively used to S3, S4 to be connected to VPLS network.Carry out communicating for S3 with S1, as shown by arrows, in networking, each looped network carries out agreement computing to the data flow trend that S3 with S1 communicates respectively, blocks corresponding physical port, prevents loop, and circle represents the port got clogged, below roughly the same.
As shown in Figure 5, during link failure between PE1 and CE1, after ethernet ring network perceives fault, non-working port will be blocked, open the physical port of CE2, but up VPLS network does not know the state variation of descending looped network, data flow still carries out transmission data along the trend before ethernet ring network state variation, due to link failure between PE1 and CE1, the communication disruption between S3 and S1 will certainly be caused like this.
As shown in Figure 6, in order to solve the link failure due to AC side between PE1 and CE1 shown in Fig. 5, and the obstructed problem of the downstream caused, when the link failure of AC side time, PE1 is after link failure being detected, just need to send FLUSH message to all the other the PE nodes in the VPLS network on upper strata, refresh the MAC Address list item of oneself simultaneously, refresh MAC Address to need to delete based on PW, corresponding VFI can be found by AC, FLUSH message is broadcasted in same VFI, all PE equipment in same like this VFI can receive this message, corresponding MAC Address list item is deleted based on PW.
As shown in Figure 7, in VPLS network, all PE equipment receives descending looped network and sends FLSUH message, and after having refreshed respective MAC Address list item, S3 just searches less than corresponding forwarding-table item after arriving PE4, at this moment it can broadcast data flow inside same VFI, each PE relearns new MAC Address simultaneously, sets up new forwarding-table item.
As shown in Figure 8, after establishing new forwarding-table item, later data flow trend just can be propagated along newly-built forward-path, and does not need to carry out broadcasting this data flow, waste bandwidth.
Fig. 9 is the structured flowchart according to the VPLS network of inventive embodiments and the changeover apparatus of ethernet ring network, and this device is arranged on the PE of VPLS network.As shown in Figure 9, comprise according to the VPLS network of inventive embodiments and the changeover apparatus of ethernet ring network:
Detecting blocking module 92, for detecting descending fault, and blocking port corresponding to this fault when descending fault being detected;
Signalling trouble module 94, be connected to and detect blocking module 92, other PE for notifying in VPLS network deletes the MAC Address in VPLS network corresponding to above-mentioned fault;
Module 96 is set up in path, is connected to signalling trouble module 94, for setting up new forward-path.
In the prior art, because VPLS network can not perceive the state variation of node in ethernet ring network, so the flow ethernet ring network that VPLS network may be caused to issue does not receive.Said apparatus designs for this problem just, each PE in VPLS network arranges said apparatus, so, namely VPLS network can be made can to perceive the state variation of node in ethernet ring network in time, also all PE in VPLS network can be made can to mask this fault, and re-establish forward-path continuation sending flow rate, thus greatly strengthen transmission stability, the robustness of Ethernet.
Preferably, signalling trouble module 94 can refresh mac address table by other PE sent in the FLUSH message notifying VPLS network refreshing upper row address, deletes the MAC Address in VPLS network corresponding to fault.
In specific implementation process, the port that other the PE of FLUSH message notifying that application refreshes upper row address gets clogged, it is the most convenient to implement, and efficiency is very high, and the PE receiving FLUSH message can refresh the mac address table of oneself immediately thus delete MAC Address corresponding to fault.It should be noted that, first detection blocking module 92 can refresh the mac address table of PE belonging to oneself when the port that obstruction fault is corresponding and delete corresponding MAC Address.
Preferably, as shown in Figure 10, path is set up module 96 and be may further include:
Forwarding topology unit 962, the user side for receiving PE broadcast fault being detected sends to the data flow of this PE, according to the mac address table after refreshing, determines new forwarding topology, sets up new forward-path;
Data broadcast unit 964, when fault being detected for the PE belonging to it, broadcast in VPLS network number user side send to this PE according to stream.
When PE is not the PE finding fault, its forwarding topology unit 962 will receive user's side data stream of the PE broadcast finding fault, thus sets up new forward-path on this basis.
When PE is the PE finding fault, after it detects blocking module 92 port block that fault is corresponding, when new data flow arrives this PE, get clogged due to original route so just can not find corresponding forward-path, now its data broadcast unit 964 just needs in whole VPLS network, broadcast this data flow (message), thus determines new forwarding topology structure.
Preferably, detect blocking module 92 to the method that descending fault detects can comprise following one of at least: physical scan is carried out to port, the corresponding alarm received in ethernet ring network, carries out link hello detection.
Detect blocking module 92 and initiatively can carry out fault detect, such as, physical scan carried out to port, carry out link hello detection, also can utilize alarm function in ethernet ring network, the corresponding alarm of receiving alarm module, indirectly detection failure.In fact, may be used for fault detection method of the present invention at present and also have a lot, be not limited to said method.
From above description, can find out, technical scheme provided by the invention can make Ethernet looped network and VPLS network switch intelligently, make VPLS network can know ethernet ring network state variation timely, thus change is transmitted accordingly, prevent downlink traffic obstructed, add stability, the robustness of Ethernet transmission.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.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 (6)
1. a reverse method for VPLS VPLS network and ethernet ring network, is characterized in that, comprising:
Provider edge router PE in described VPLS network detects descending fault, when descending fault being detected, detect that the PE of fault blocks port corresponding to described fault, wherein, the PE in described VPLS network to the method that descending fault detects comprise following one of at least: physical scan is carried out to port, the corresponding alarm received in ethernet ring network, carries out link hello detection;
Described other PE detecting that the PE of fault notifies in described VPLS network deletes the medium access control MAC Address in VPLS network corresponding to described fault;
PE in described VPLS network sets up new forward-path.
2. method according to claim 1, is characterized in that, described in detect that the PE of fault notifies that the MAC Address that other PE in described VPLS network deletes in VPLS network corresponding to described fault comprises:
The described FLUSH message upper row address of PE transmission refreshing of fault being detected;
Other PE in described VPLS network receives described FLUSH message, refreshes mac address table, deletes the MAC Address in VPLS network corresponding to described fault.
3. method according to claim 2, is characterized in that, the PE in described VPLS network sets up new forward-path and comprises:
Describedly detect that the PE of fault broadcasting user side in described VPLS network sends to the data flow of this PE, other PE in described VPLS network receives described broadcast data stream, according to the described mac address table after refreshing, determine new forwarding topology, set up new forward-path.
4. a changeover apparatus for VPLS VPLS network and ethernet ring network, is arranged on the provider edge router PE of described VPLS network, it is characterized in that, comprising:
Detect blocking module, for detecting descending fault, and port corresponding to described fault is blocked when descending fault being detected, wherein, described detection blocking module to the method that descending fault detects comprise following one of at least: physical scan is carried out to port, the corresponding alarm received in ethernet ring network, carries out link hello detection;
Signalling trouble module, other PE for notifying in described VPLS network deletes the medium access control MAC Address in VPLS network corresponding to described fault;
Module is set up in path, for setting up new forward-path.
5. device according to claim 4, it is characterized in that, other PE that described signalling trouble module is refreshed in VPLS network described in the FLUSH message notifying of upper row address by transmission refreshes mac address table, deletes the MAC Address in VPLS network corresponding to described fault.
6. device according to claim 5, is characterized in that, described path is set up module and comprised:
Forwarding topology unit, the user side for receiving PE broadcast fault being detected sends to the data flow of this PE, according to the described mac address table after refreshing, determines new forwarding topology, sets up new forward-path;
Data broadcast unit, when fault being detected for the PE belonging to it, in described VPLS network, broadcasting user side sends to the data flow of this PE.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110111221.2A CN102185712B (en) | 2011-04-29 | 2011-04-29 | The reverse method of VPLS network and ethernet ring network and device |
| PCT/CN2012/072587 WO2012146097A1 (en) | 2011-04-29 | 2012-03-20 | Vpls network and ethernet ring switching method and device |
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| CN201110111221.2A CN102185712B (en) | 2011-04-29 | 2011-04-29 | The reverse method of VPLS network and ethernet ring network and device |
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| CN102185712B (en) * | 2011-04-29 | 2015-10-21 | 中兴通讯股份有限公司 | The reverse method of VPLS network and ethernet ring network and device |
| CN102299845B (en) * | 2011-09-20 | 2015-09-09 | 神州数码网络(北京)有限公司 | Multilink transparent interconnection multicast frames transmission method and system |
| CN102801562B (en) * | 2012-08-10 | 2015-04-22 | 福建星网锐捷网络有限公司 | Transmission link switching method and device and network equipment |
| CN103166849B (en) * | 2013-03-06 | 2016-02-17 | 杭州华三通信技术有限公司 | The method of the interconnected network routing convergence of IPSec VPN and routing device |
| CN105391641A (en) * | 2014-09-03 | 2016-03-09 | 中兴通讯股份有限公司 | Message forwarding method and device in private network |
| CN107786435B (en) * | 2016-08-25 | 2021-06-25 | 中兴通讯股份有限公司 | Pseudo wire protection method and device |
| CN114679348B (en) * | 2020-12-24 | 2022-12-27 | 华为技术有限公司 | Fault processing method and related product |
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| CN1980155A (en) * | 2006-11-29 | 2007-06-13 | 杭州华为三康技术有限公司 | Method for recovering sponsor media accessing control address and operation businesss edge apparatus |
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| CN100446476C (en) * | 2006-08-02 | 2008-12-24 | 华为技术有限公司 | Method and apparatus for communicating network trouble dtecting result |
| CN101237343B (en) * | 2007-02-02 | 2011-08-10 | 华为技术有限公司 | Method for quick failure switching and quick switching system |
| US8144575B2 (en) * | 2009-06-30 | 2012-03-27 | Juniper Networks, Inc. | Redundant pseudowires for border gateway patrol-based virtual private local area network service multi-homing environments |
| CN102185712B (en) * | 2011-04-29 | 2015-10-21 | 中兴通讯股份有限公司 | The reverse method of VPLS network and ethernet ring network and device |
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| CN1980155A (en) * | 2006-11-29 | 2007-06-13 | 杭州华为三康技术有限公司 | Method for recovering sponsor media accessing control address and operation businesss edge apparatus |
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| WO2012146097A1 (en) | 2012-11-01 |
| CN102185712A (en) | 2011-09-14 |
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