CN102136945A - Method for establishing label switch path (LSP) protection and node - Google Patents
Method for establishing label switch path (LSP) protection and node Download PDFInfo
- Publication number
- CN102136945A CN102136945A CN2011100390761A CN201110039076A CN102136945A CN 102136945 A CN102136945 A CN 102136945A CN 2011100390761 A CN2011100390761 A CN 2011100390761A CN 201110039076 A CN201110039076 A CN 201110039076A CN 102136945 A CN102136945 A CN 102136945A
- Authority
- CN
- China
- Prior art keywords
- lsp
- protection
- node
- message
- parameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
-
- 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
Abstract
The embodiment of the invention discloses a method for establishing label switch path (LSP) protection and a node, relating to the communication field and used for configuring OAM (operations, administration and maintenance) parameters and protection parameters while realizing the establishment of an LSP protection in LSP protection. The method for establishing LSP protection comprises the following steps: receiving an LSP establishment message sent by an uplink node, wherein the LSP establishment message carries the OAM parameters and the protection parameters; and configuring the OAM parameters and the protection parameters.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method for building up and node of LSP protection.
Background technology
Multiprotocol label switching (Multi-Protocol Label Switching, be called for short MPLS) be a kind of system that is used for rapid data packet switch and route, it provides a kind of mode, with Internet protocol (Internet Protocol, IP) map addresses is used for different bags and transmits and packet technology for simply having the label of regular length.MPLS has obtained to use widely in carrier network as a kind of group technology of maturation.Label switched path (Label SwitchedPath, be called for short LSP) be the packet forwarding path that uses mpls protocol to set up, constitute by a series of LSRs and the link between them between mark packets source LSR (Label Switching Router is called for short LSR) and the purpose LSR.In the network protection of MPLS, at the contingent failure situations of network link, following three kinds of methods of repairing fault are arranged usually in the prior art: local reparation, protection are switched, quick heavy-route.It is a kind of method that can recover link or node failure in the shortest time that protection is switched.In the protection reversed process, data switch to from the LSP that breaks down on the protection LSP at the reparation point.
For example, LSP shown in Figure 1 protection in 1: 1 is made of service aisle and protection passage, and wherein service aisle comprises the working LSP of two symmetrical reverse, and the protection passage comprises the protection LSP of two symmetrical reverse.In the data transmission procedure, whether working LSP is carried out detection of connectivity by operating, manage and safeguard (and Maintenance is called for short OAM for Operations, Administration), current working properly with testing LSP.Working LSP just often protects LSP generally not carry any data.When fault has taken place working LSP, the LSP destination node detects fault and source node is passed in report, and the transmission of data just promptly switches to protection LSP and goes up, thereby realization is to the protection of Network Transmission.Because protection LSP just set up by signaling before fault takes place in advance, the speed that protection is switched is very fast usually.After working LSP was recovered normally, according to the recovery pattern of LSP protection configuration in 1: 1, the transmission of data can be selected to switch back working LSP or remain on the protection LSP.
At present, when prior art is set up LSP protection in 1: 1 in network, with the LSP protection in 1: 1 of setting up between node A and the node F shown in Figure 1 is example, its process is roughly as follows: at first set up A → B → C → F, and F → C → two bi-directional symmetrical LSP of B → A (among the figure shown in the solid line) respectively by signaling protocol, by management two LSP are bound service aisle then; Set up two protection LSP A → D → E → F, F → E → D → A (among the figure shown in the dotted line) equally and two LSP are bound the protection passage by management; Webmaster is by the OAM parameter and protection parameter of management difference configuration effort passage with the protection passage; To work by management at last and bind 1: 1 protection group of a LSP with protecting passage.
Obviously, this deployment way need carry out the configuration of OAM parameter and protection parameter more respectively after the foundation of finish the work LSP and protection LSP, and process is loaded down with trivial details, and configuration complexity is higher, has increased operating cost of operator greatly.
Summary of the invention
Embodiments of the invention technical problem to be solved is to provide a kind of method for building up and node of LSP protection; can realize that the LSP protection is when setting up; carry out the configuration of OAM parameter and protection parameter, thereby simplified the establishment step of LSP, reduced the complexity of configuration.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
A kind of method for building up of LSP protection comprises:
The LSP that receives the upstream node transmission sets up message, and described LSP sets up message and carries operation, management and maintenance parameters and protection parameter;
Dispose described operation, management and maintenance parameters and protection parameter.
A kind of node comprises:
Receiving element is used to receive the LSP that upstream node sends and sets up message, and described LSP sets up message and carries operation, management and maintenance parameters information and protection parameter information;
Dispensing unit is used to dispose described operation, management and maintenance parameters and protection parameter.
The method for building up of LSP protection of the present invention; after the LSP that carries OAM parameter and protection parameter that receives the upstream node transmission sets up message; configuration OAM parameter and protection parameter; realized that the LSP protection is when setting up; carry out OAM parameter and the configuration of protecting parameter; thereby simplified the establishment step of LSP protection, reduced the complexity of configuration, also reduced operation cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is for setting up the schematic diagram of LSP protection in 1: 1 in the prior art protection exchange;
Fig. 2 is the flow chart of the method for building up of LSP protection in the embodiment of the invention;
Fig. 3 is for setting up the flow chart of LSP in the embodiment of the invention;
Fig. 4 is the structural representation of node in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method for building up of LSP protection, is implemented in the LSP protection when setting up, and carries out the configuration of OAM and protection parameter, thereby reaches the establishment step of simplifying the LSP protection, the purpose that has reduced the complexity of configuration.
Below in conjunction with accompanying drawing the embodiment of the invention is done detailed description.
Embodiment one
In setting up the process of LSP, source node is initiated LSP by agreement and is set up message, and the LSP label of allocation of downlink.In the message process, with respect to the node that receives message, we claim to send the upstream node of the node of message for the node of this reception message.
Present embodiment provides a kind of method for building up of LSP protection, and as shown in Figure 2, this method comprises:
The LSP that step 101, reception upstream node send sets up message, and LSP sets up message and carries OAM parameter and protection parameter.
The LSP that node in the link receives the upstream node transmission sets up message; in the present embodiment; LSP sets up message and is used to set up a working LSP or protection LSP; LSP sets up and carries OAM parameter and protection parameter in the message; wherein; the OAM parameter comprises path termination source point sign (TrailTermination Source Identifier; be called for short TTSI) and quick failure detection frequency (FastFailure Detection Frequency; be called for short FFD Frequency), FFD Frequency is the message transmission frequency.LSP TTSI is made up of IP addresses of nodes and LSP ID, is used for LSP of unique identification.The protection parameter comprises that protection recovers type and Wait to Restore Time.
The node in link, receive that upstream node sends set up the message of LSP the time, read LSP automatically and set up OAM parameter and the protection parameter that message is carried, and dispose this OAM parameter and protection parameter, so that simplified the establishment step of LSP.
The method for building up of the LSP protection of present embodiment; this method carries the OAM parameter by transmission and protection parameter L SP sets up message; when the node in the link is set up message at the LSP that receives the upstream node transmission; automatically dispose OAM parameter and protection parameter; realized that LSP protects when setting up, carried out the configuration of OAM parameter and protection parameter, thereby simplified the establishment step of LSP; reduce the complexity of configuration, greatly reduced operating cost of operator.
Embodiment two
In the present embodiment; in switching with protection to set up LSP protection in 1: 1 be example; wherein, set up agreement that LSP adopts for based on the RSVP of traffic engineering expansion (ResourceReservation Protocol-Traffic Engineering, RSVP-TE).The explicit route object of service aisle (Explicitly Routed Object is called for short ERO) can be determined by following dual mode: set in advance by management; Automatically calculate by routing iinformation.After the explicit route object of service aisle is determined, promptly determined working LSP the IP of node of process, the working LSP of two bi-directional symmetrical of service aisle has just determined that also source node is set up the uplink and downlink Label Forwarding Information Base by the RSVP-TE signaling according to the working LSP of determining on the all-network node of this LSP process.In the present invention, the direction of the LSP that will be set out by source node is defined as up direction, and the direction of getting back to the LSP of source node is a down direction.
In the flow chart of setting up LSP as shown in Figure 3; source node A initiates LSP by the RSVP-TE agreement and sets up message; and distribute source node A to the descending LSP label of Node B (label that is used to identify descending LSP is called descending LSP label); set up descending LSP label forwarding information table (the 1abel forwarding information base of source node A; LFIB); in the present embodiment; it is PATH message that LSP sets up message; carry OAM parameter and protection parameter in this message; source node A disposes OAM parameter and protection parameter at first automatically; give its downstream node with the PATH forwards then; wherein, source node A is carried by upstream distributing labels (Upstearm_Label) object in the PATH message to the descending LSP label of Node B.
The form of Upsteam Label object is as shown in the table:
Wherein the C-Type field is the LSP tag types, and the value of C-Type is 2 in the present embodiment, and the Class-Num value is 35.The value of C-Type and Class-Num is used to identify object type.The Label field is the label of the descending LSP of upstream node distribution.
Source node A is sent to Node B according to the IP of the next-hop node among the ERO (being Node B) with PATH message, carries OAM parameter and protection parameter in the PATH message that source node A initiates, and wherein, the OAM parameter comprises TTSI and FFD Frequency.LSP TTSI is made up of IP addresses of nodes and LSP ID, is used to identify a LSP.The protection parameter comprises that protection recovers type and Wait to Restore Time.Wherein, OAM parameter and protection parameter carrying in PATH message be by expansion subtype length value (Sub-type-length-value Sub-TLV) realizes, TTSI Sub-TLV form is as shown in the table:
The TTSI field is set to send to the TTSI of this node of destination node;
FFD Frequency Sub-TLV form is as shown in the table:
The Frequency field is provided with FFD message transmission frequency;
Protection recovery type and Wait to Restore Time Sub-TLV form are as shown in the table:
The protection of R field sign recovers type, and protection recovers type and is divided into recovery formula or non-recovery formula; WTR interval field is set to the time of Wait-to-Restore.
After Node B receives the PATH message that carries OAM parameter and protection parameter of source node A transmission; the up LSP label of distribution node B to the label of the descending LSP of node C and source node A to Node B; set up the descending label forwarding information table of Node B; and based on the Upsteam_Label object of the Node B of distributing in the descending LSP tag update PATH message of node C; be that Label field in the Upstearm_Label object is the descending LSP label that Node B arrives node C, then PATH message be sent to node C.Need to prove that in the embodiment of the invention, except source node and destination node, intermediate node also can carry out the configuration of OAM parameter and protection parameter.
Equally; after node C receives the PATH message that carries OAM parameter and protection parameter of upstream node B transmission; the up LSP label of distribution node C to the label of the descending LSP of F and Node B to node C; set up the descending label forwarding information table of node C; based on the Upsteam_Label object of the node C that distributes in the descending LSP tag update PATH message of destination node F, then message is sent to destination node F.
After destination node F receives the PATH message that carries OAM parameter and protection parameter of upstream node A transmission; automatically dispose OAM parameter and protection parameter; set up the descending LSP label forwarding information table of destination node F to the descending LSP label of destination node F according to the node C that receives; the foundation of descending LSP can be finished; distribution node C is to the label of the up LSP of destination node F then; set up up LSP label forwarding information table; generate RESV message; node C is carried by the Label object in the RESV message to the up LSP label of destination node F, and destination node F is sent to node C with RESV message then.Wherein, OAM parameter in the RESV message and protection parameter can be default, also portability, and the particular content of OAM parameter and protection parameter, form do not repeat them here with above when carrying.The Label Format Object is as follows,
Wherein the Class-Num value is 16, and the C-Type value is 1.
After node C receives the RESV message that carries OAM parameter and protection parameter of destination node F transmission; the Node B of distributing to the up LSP label of destination node F and node C oneself according to the node C that receives is to the up LSP label of node C; set up up LSP Label Forwarding Information Base; and the Node B of distributing according to node C is to the up LSP label of node C; node C upgrades the Label object in the RESV message; be that Label field in the Label object is the up LSP label that Node B arrives node C, then RESV message be sent to Node B.
After Node B receives the RESV message that carries OAM parameter and protection parameter of upstream node C transmission; the source node A that distributes to the up LSP label of destination node C and Node B oneself according to the Node B that receives arrives the up LSP label of Node B; Node B is set up up LSP label forwarding information table; the Label object of the source node A that distributes based on Node B in the up LSP tag update RESV message of Node B; be that Label field in the Label object is the up LSP label of A to B, then RESV message be sent to source node A.
After source node A receives RESV message, set up the up LSP label forwarding information table of source node A to the up LSP label of destination node B, can finish the foundation of up LSP according to the node A that receives.
This shows, in the present embodiment, can finish the working LSP of a bi-directional symmetrical, the i.e. foundation of service aisle by the signalling interactive process of a REVP-TE.
After service aisle is set up and is finished, in the foundation of the automatic trigger protection passage of source node.Also comprise the RECORD_ROUTE object in the RESV message that service aisle returns in setting up process, the RECORD_ROUTE object record working LSP the IP of node of process.
Can determine by following dual mode with the explicit route object of the corresponding protection passage of service aisle: set in advance by management; Source node A calculates the path as the protection passage, the path that do not overlap with service aisle according to the service aisle of having set up of RECORD_ROUTE object record.After the explicit route object of protection passage is determined, promptly determined protection LSP the IP of node of process, the protection LSP of two symmetrical reverse of protection passage also just determined.Source node is set up upstream label by the RSVP-TE signaling according to the protection LSP that determines and is transmitted on the all-network node of this LSP process.
The process of setting up and the parameter configuration process of the process of specifically setting up of protection passage and parameter configuration process and service aisle above are similar, do not repeat them here.
After service aisle and protection passage were set up and finished, source node A was associated as a protection group with both, and so far, the foundation of LSP protection has just been finished.
Further, in the process of setting up service aisle and protection passage, PATH message and RESV message is portability ASSOCIATION object also, is used for the working LSP and the protection LSP of related LSP protection, and the concrete form of ASSOCIATION object is as shown in the table:
Wherein the Association the type field is set to Recovery, this moment representative implication be the association two appointments passage as 1: 1 protection group of pair of L SP.Because source node A working LSP before sending LSP to set up message is definite with the ID of protection LSP, therefore the AssociationSource field can be set to the IP work ID of source node A, and the Association id field is set to protect the ID of the corresponding LSP of passage in the PATH of service aisle message; In the PATH message of protection passage, then be set to the ID of the corresponding LSP of service aisle.Like this, when the foundation of protection passage is finished, also just automatically service aisle and protection passage are associated as a protection group.RESV message in like manner.
The method for building up of the LSP protection of present embodiment; when setting up working LSP or protection LSP; source node initiates to set up the PATH message of LSP by the RSVP-TE agreement; and PATH message is sent to downstream node; destination node is after the LSP that carries OAM parameter and protection parameter that receives the upstream node transmission sets up message; automatically dispose OAM parameter and protection parameter; wherein; OAM parameter and protection parameter carrying by expansion Sub-TLV in PATH message (perhaps RESV message) realized; realized that the LSP protection is when setting up; carry out the configuration of relevant parameter, thereby simplified the establishment step of LSP, reduced the complexity of configuration.The use of Association object has realized automatically service aisle and protection passage being associated as a protection group when the foundation of protection passage is finished.Simplify the establishment step of LSP, reduced the complexity of configuration, greatly reduced operation cost.
Embodiment three
Present embodiment provides a kind of node, as shown in Figure 4, comprising:
Receiving element 401 is used to receive the LSP that upstream node sends and sets up message, and LSP sets up message and carries OAM parameter information and protection parameter information; Dispensing unit 402 is used to dispose OAM parameter and protection parameter.The node of present embodiment also comprises: transmitting element 403 is used for that described LSP is set up message and sends to downstream node.
Wherein, above-mentioned OAM parameter comprises: path termination source point sign and quick failure detection frequency; The protection parameter comprises: protection recovers type and Wait to Restore Time.LSP sets up message and also carries the ASSOICIATION object.
The method for building up of the LSP of present embodiment and the foregoing description two are identical, do not repeat them here.
The node of present embodiment; after the LSP that carries OAM parameter and protection parameter that receives the upstream node transmission sets up message; configuration OAM parameter and protection parameter; realized that the LSP protection is when setting up; carry out the configuration of relevant parameter; thereby simplified the establishment step of LSP, reduced the complexity of configuration.The use of Association object has realized automatically service aisle and protection passage being associated as a protection group when the foundation of protection passage is finished.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk as computer, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
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 (10)
1. the method for building up of a LSP protection is characterized in that, comprising:
The LSP that receives the upstream node transmission sets up message, and described LSP sets up message and carries operation, management and maintenance parameters and protection parameter; Dispose described operation, management and maintenance parameters and protection parameter.
2. method according to claim 1 is characterized in that, also comprises after the LSP that described reception upstream node sends sets up message:
Described LSP is set up message send to downstream node, described LSP sets up message and carries operation, management and maintenance parameters and protection parameter.
3. method according to claim 2 is characterized in that described LSP sets up message and also carries the ASSOICIATION object, and described ASSOICIATION object is used for related job LSP and protection LSP.
4. method according to claim 1 and 2 is characterized in that,
Described operation, management and maintenance parameters comprise: path termination source point sign and quick failure detection frequency,
Described protection parameter comprises: protection recovers type and Wait to Restore Time.
5. method according to claim 1 and 2 is characterized in that,
It is the RSVP-TE protocol message that described LSP sets up message.
6. a node is characterized in that, comprising:
Receiving element is used to receive the LSP that upstream node sends and sets up message, and described LSP sets up message and carries operation, management and maintenance parameters information and protection parameter information;
Dispensing unit is used to dispose described operation, management and maintenance parameters and protection parameter.
7. node according to claim 6 is characterized in that, also comprises:
Transmitting element is used for that described LSP is set up message and sends to downstream node.
8. node according to claim 6 is characterized in that described LSP sets up message and also carries the ASSOICIATION object, and described ASSOICIATION object is used for related job LSP and protection LSP.
9. according to claim 6 or 7 described nodes, it is characterized in that,
Described operation, management and maintenance parameters comprise: path termination source point sign and quick failure detection frequency,
Described protection parameter comprises: protection recovers type and Wait to Restore Time.
10. according to claim 6 or 7 described nodes, it is characterized in that,
It is the RSVP-TE protocol message that described LSP sets up message.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110039076.1A CN102136945B (en) | 2011-02-16 | 2011-02-16 | Method for establishing label switch path (LSP) protection and node |
| PCT/CN2011/080806 WO2012109907A1 (en) | 2011-02-16 | 2011-10-14 | Method for establishing lsp protection, and node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110039076.1A CN102136945B (en) | 2011-02-16 | 2011-02-16 | Method for establishing label switch path (LSP) protection and node |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102136945A true CN102136945A (en) | 2011-07-27 |
| CN102136945B CN102136945B (en) | 2014-03-12 |
Family
ID=44296606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110039076.1A Active CN102136945B (en) | 2011-02-16 | 2011-02-16 | Method for establishing label switch path (LSP) protection and node |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102136945B (en) |
| WO (1) | WO2012109907A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012109907A1 (en) * | 2011-02-16 | 2012-08-23 | 华为技术有限公司 | Method for establishing lsp protection, and node |
| WO2013155675A1 (en) * | 2012-04-18 | 2013-10-24 | Telefonaktiebolaget L M Ericsson (Publ) | System and method to send oam packets on redundancy paths |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1510874A (en) * | 2002-12-26 | 2004-07-07 | ��Ϊ��������˾ | Method for constructing bidirectional lable swap path in optical network |
| CN1878165A (en) * | 2005-06-08 | 2006-12-13 | 华为技术有限公司 | Method for detecting label switching path connectivity |
| US7373401B1 (en) * | 2001-12-31 | 2008-05-13 | Nortel Networks Limited | Label switched path OAM wrapper |
| CN101471813A (en) * | 2007-12-29 | 2009-07-01 | 华为技术有限公司 | Configuration method, system and equipment for implementing domain-striding maintenance management |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101192990A (en) * | 2006-11-30 | 2008-06-04 | 华为技术有限公司 | A method and device and system for quick rerouting in MPLS network |
| CN101355441B (en) * | 2007-07-27 | 2012-04-04 | 华为技术有限公司 | Method, system and equipment for configuring operation management maintain attribute |
| CN101964743A (en) * | 2009-07-24 | 2011-02-02 | 华为技术有限公司 | Multiprotocol label-switched path APS (Active Protection System) protection and management method, equipment and system |
| CN102136945B (en) * | 2011-02-16 | 2014-03-12 | 华为技术有限公司 | Method for establishing label switch path (LSP) protection and node |
-
2011
- 2011-02-16 CN CN201110039076.1A patent/CN102136945B/en active Active
- 2011-10-14 WO PCT/CN2011/080806 patent/WO2012109907A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7373401B1 (en) * | 2001-12-31 | 2008-05-13 | Nortel Networks Limited | Label switched path OAM wrapper |
| CN1510874A (en) * | 2002-12-26 | 2004-07-07 | ��Ϊ��������˾ | Method for constructing bidirectional lable swap path in optical network |
| CN1878165A (en) * | 2005-06-08 | 2006-12-13 | 华为技术有限公司 | Method for detecting label switching path connectivity |
| CN101471813A (en) * | 2007-12-29 | 2009-07-01 | 华为技术有限公司 | Configuration method, system and equipment for implementing domain-striding maintenance management |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012109907A1 (en) * | 2011-02-16 | 2012-08-23 | 华为技术有限公司 | Method for establishing lsp protection, and node |
| WO2013155675A1 (en) * | 2012-04-18 | 2013-10-24 | Telefonaktiebolaget L M Ericsson (Publ) | System and method to send oam packets on redundancy paths |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102136945B (en) | 2014-03-12 |
| WO2012109907A1 (en) | 2012-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5980427B2 (en) | System and method for switching traffic from suboptimal primary P2MP to standby P2MP | |
| EP2797259B1 (en) | Ring network label switch path creating method, related device and communication system | |
| CN101710877B (en) | Method, device and system for processing traffic flow based on pseudowire | |
| CN105991437B (en) | Message forwarding processing method and device, controller and route forwarding equipment | |
| EP2314022B1 (en) | Establishing pseudowires in packet switching networks | |
| US20080198751A1 (en) | Method for implementing cross-domain constraint routing | |
| US9571387B1 (en) | Forwarding using maximally redundant trees | |
| CN101640637B (en) | Resource reservation protocol tunnel management method based on flow rate engineering and system thereof | |
| CN102724117A (en) | Multi-protocol label switching (MPLS) traffic engineering (TE) tunnel building method and device | |
| CN102474446A (en) | Recovery mechanism for point-to-multipoint traffic | |
| US8824451B2 (en) | Method and system for establishing an associated bidirectional label-switched path | |
| CN103210626A (en) | Method, apparatus and system for generating label forwarding table in ring topology | |
| WO2008141567A1 (en) | Multi-protocol label switching network flow switch method and equipment | |
| CN101616091B (en) | Method for realizing fast re-routing of label distribution protocol and label switch router | |
| CN103581013A (en) | Method and device for achieving non-stop routing of routing protocol | |
| CN104144122A (en) | Method, device and system for establishing label switched path | |
| CN103166848A (en) | Method and point for selecting multi-protocol label switching traffic engineering bypass tunnel | |
| CN102130829B (en) | Method and device for establishing label switch paths (LSP) | |
| CN101826954A (en) | Method and system for realizing hot backup in centralized network nodes | |
| EP2075981A1 (en) | A method and device for avoiding label collision when pbt is controlled by gmpls | |
| CN101860769B (en) | Method, device and system for fusing IP and light | |
| CN101964743A (en) | Multiprotocol label-switched path APS (Active Protection System) protection and management method, equipment and system | |
| CN101232453A (en) | Heavy route method for fast searching path in T-MPLS network | |
| US20030043427A1 (en) | Method of fast circuit recovery using local restoration | |
| CN102136945B (en) | Method for establishing label switch path (LSP) protection and node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |