CN102571601A - Method for ensuring bidirectional forwarding detection reliability and label switching path equipment - Google Patents
Method for ensuring bidirectional forwarding detection reliability and label switching path equipment Download PDFInfo
- Publication number
- CN102571601A CN102571601A CN201210031168XA CN201210031168A CN102571601A CN 102571601 A CN102571601 A CN 102571601A CN 201210031168X A CN201210031168X A CN 201210031168XA CN 201210031168 A CN201210031168 A CN 201210031168A CN 102571601 A CN102571601 A CN 102571601A
- Authority
- CN
- China
- Prior art keywords
- request message
- bfd
- mpls
- ping request
- end equipment
- 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
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method for ensuring bidirectional forwarding detection reliability and label switching path equipment. Source end equipment transmits a multiprotocol label switching (MPLS) label switching path (LSP) PING request message carrying route identification information to host end equipment, and the host end equipment uniquely determines bidirectional forwarding detection (BFD) session according to the route identification information in the MPLS LSP PING request message and forwarding equivalence class (FEC). In the invention, the existing MPLS LSP Ping standard RFC4379 is expanded, and MPLS Router ID TLV (Threshold Limit Value) is added for carrying the parameter (i.e. Router ID) for uniquely determining the BFD session. On the basis of being compatible with the existing standard, the method in the invention proposes a complete solution of LSP BFD, and the problem of abnormal BFD session detection is solved in case that the forwarding path varies in the existing solution.
Description
Technical field
The present invention relates to the IP network communication technical field, relate in particular to the two-way forwarding of a kind of assurance and detect reliable method and label switched path equipment.
Background technology
The more and more important demand in network equipment reliability aspect is: require the communication failure between adjacent system can access fast detecting.Like this, when fault occurs, can set up alternate channel quickly or be switched to other link.
The demand that appears as that two-way forwarding detects (Bidirectional Forwarding Detection is called for short BFD) agreement has proposed a solution.The BFD technology provide one general, with the quick fault testing mechanism of media independent, can on any kind passage between the system, detect for each layer.These passages comprise direct link, multihop path, multiprotocol label switching (Multiprotocol Label Switch is called for short MPLS) label switched road (Label Switch Path is called for short LSP), tunnel, pseudo-line etc.The basic functional principle of BFD is to set up session between a pair of equipment; Setting up the periodic BFD of transmission detection messages on the passage of session then; In case an end equipment can not receive detection messages in the sufficiently long time, problem has taken place in the path that just can be determined to the sense channel of opposite equip..
Defined the BFD detection method of MPLS LSP among the RFC5884.The BFD of MPLS LSP detects has masters and passive side's difference; Initiate the masters of BFD detection and send MPLS LSP PING request (Request) message at the node of LSP; The MPLS request protocol has been expanded BFD descriptor (Discriminator) type lengths values (the Type Length Value among the RFC4379 (Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures); Be called for short TLV), the BFD conversation description that in the MPLS request message, carries local terminal accords with, after the caudal knot point of LSP receives MPLS LSP PING Request message; Carry out forwarding equivalence class (Forwarding Equivalence Class; Abbreviation FEC) verification after verification is legal, gets access to the BFD conversation description symbol of masters from BFD Discriminator TLV; Thereby trigger the foundation of BFD session, begin the mutual of both sides BFD session.Simultaneously, RFC5884 standard-required masters also need continue to send MPLS LSP Ping request message, is convenient to carry out the FEC verification of the LSP of chain of command like this, remedies forwarding face BFD and detects the problem that can't carry out the FEC verification.
Accompanying drawing 1 has been described the connection sketch map of MPLS LDP LSP, and at router one, router two is set up LDP LSP between the router three, detects at the node router one deploy LSP BFD of LSR.The process of setting up of BFD session comprises:
When the practical implementation of MPLS LSP BFD, can occur under the complicated LSP network environment, the realization of following existing standard possibly cause the unusual of BFD session detection; Shown in accompanying drawing 2: bring out in the LSP source under the situation of existing multipath; Information in the MPLS LSP Ping message that might masters periodically sends can change along with the variation of forward-path, comprises the source IP address of IP stem in the MPLS LSP Ping request message, purpose IP address etc.; All might change along with the variation of forward-path; After the place termination is received MPLS LSP Ping request message,, need request message and BFD session be mated like this if carry BFDDiscriminator TLV in the message; If at this moment continue the coupling of carrying out the BFD session according to the FEC in the message and source IP address, then can matching error.
Existing standard is described the foundation that triggers the BFD session through MPLS LSP Ping message; The BFD session that need come effective coupling to go up certain LSP through the information of carrying in the MPLS LSP Ping message, but the BFD session that FEC information in the LSP Ping message and BFD Discriminator TLV can not local terminals of unique coupling.To the practical implementation of standard the time; The passive side generally will consider according to the out of Memory in the MPLS LSP Ping message, and for example the source address of IP stem and FEC information are mated the BFD detection of certain LSP, but adopts the words of this method; In case the source IP address of MPLS LSP Ping message changes; Then can cause the session of passive side BFD coupling, occur unusual, thereby cause in the link serious consequence of BFD erroneous detection Down just often.
Summary of the invention
The invention provides a kind of method and label switched path equipment that guarantees two-way forwarding detecting reliability, solved in the current standard that to detect definition for MPLS LSP BFD incomplete and cause that BFD detects unusual problem under some scene.
In order to solve the problems of the technologies described above; The invention provides a kind of method that guarantees two-way forwarding detecting reliability; Wherein, Source end equipment is carrying multiprotocol label switching (mpls) label switched path (LSP) the PING request message of Route Distinguisher information to the transmission of place end equipment, and said place end equipment detects (BFD) session according to Route Distinguisher information in the said MPLS LSP PING request message and the unique definite two-way forwarding of forwarding equivalence class (FEC).
Further, said method can also have following characteristic:
After said place end equipment is received said MPLS LSP PING request message, when not matching the BFD session, create new BFD session according to the Route Distinguisher information in the said MPLSLSP PING request message and said FEC.
Further, said method can also have following characteristic:
Said source end equipment is after said BFD conversation establishing success; Periodically send and carry the MPLS LSP PING request message of BFD descriptor and said Route Distinguisher information simultaneously; After said place end equipment is received said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to said descriptor and said Route Distinguisher information.
Further, said method can also have following characteristic:
Said source end equipment is after said BFD conversation establishing success; Periodically send and do not carry the MPLS LSP PING request message of Route Distinguisher information; After said place end equipment is received said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to the FEC in the said MPLS LSP PING request message and the Route Distinguisher information in creating said BFD conversation procedure, known.
Further, said method can also have following characteristic:
The mode of in MPLS LSP PING request message, carrying said Route Distinguisher information is in said MPLS LSP PING request message, to increase the said Route Distinguisher type of info length value of indication.
In order to solve the problems of the technologies described above; The invention provides a kind of label switched path equipment that guarantees two-way forwarding detecting reliability; Wherein, Said label switched path equipment when being used for as source end equipment, carries multiprotocol label switching (mpls) label switched path (LSP) the PING request message of Route Distinguisher information to the transmission of place end equipment; When also being used for, detect (BFD) session according to Route Distinguisher information the MPLS LSP PING request message of receiving from source end equipment and the unique definite two-way forwarding of forwarding equivalence class (FEC) as place end equipment.
Further, above-mentioned label switched path equipment can also have following characteristic:
Said label switched path equipment; When also being used for as place end equipment; After receiving said MPLS LSPPING request message, when not matching the BFD session, create new BFD session according to the Route Distinguisher information in the said MPLS LSP PING request message and said FEC.
Further, above-mentioned label switched path equipment can also have following characteristic:
Said label switched path equipment when also being used for as source end equipment, after said BFD conversation establishing success, periodically sending and carries the MPLS LSPPING request message of BFD descriptor and said Route Distinguisher information simultaneously; When also being used for as place end equipment, receive said MPLS LSP PING request message after, carry out the coupling and the verification of said BFD session according to said descriptor and said Route Distinguisher information.
Further, above-mentioned label switched path equipment can also have following characteristic:
Said label switched path equipment; When also being used for as source end equipment; After said BFD conversation establishing success, periodically send and do not carry the MPLS LSP PING request message of Route Distinguisher information, when also being used for as place end equipment; After receiving said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to the FEC in the said MPLS LSP PING request message and the Route Distinguisher information in creating said BFD conversation procedure, known.
Further, above-mentioned label switched path equipment can also have following characteristic:
Said label switched path equipment carries said Route Distinguisher information in MPLS LSP PING request message mode is in said MPLS LSP PING request message, to increase the said Route Distinguisher type of info length value of indication.
The present invention expands existing MPLS LSP Ping standard RFC4379; It is Route Distinguisher (Router ID) that newly-increased MPLS Router IDTLV is used to carry the parameter that helps unique definite BFD session; On compatible existing standard basis; Proposed the complete solution of LSP BFD, avoided in the existing solution under the forward-path situation of change, the BFD session detects unusual problem.The present invention has strengthened the BFD testing mechanism based on MPLS LSP in the existing standard, effectively solves the defective that under complicated MPLS LSP network environment, causes BFD session abnormality detection.
Description of drawings
Fig. 1 is the connection sketch map of MPLS LDP LSP;
Fig. 2 is that source end multipath MPLS LSP BFD detects the scene sketch map;
MPLS Router ID TLV definition structure sketch map among Fig. 3 embodiment;
Fig. 4 implements the flow chart of MPLS LSP BFD detection method.
Embodiment
This programme is expanded MPLS LSP Ping message, increases Route Distinguisher (Router ID) information that MPLS Router ID TLV is used to carry masters LSP configuration.Fig. 3 shows the structure of MPLSRouter ID TLV.
As shown in Figure 4; The method that guarantees two-way forwarding detecting reliability comprises: source end equipment is carrying multiprotocol label switching (mpls) label switched path (LSP) the PING request message of Route Distinguisher information to the transmission of place end equipment, and said place end equipment detects (BFD) session according to Route Distinguisher information in the said MPLS LSP PING request message and the unique definite two-way forwarding of forwarding equivalence class (FEC).
In this programme, when the forward-path of LSP changes, only need the Router id information not change, the BFD session all can not be affected, and need not change.
In this method, after place end equipment is received said MPLS LSP PING request message, when not matching the BFD session, create new BFD session according to the Route Distinguisher information in the said MPLS LSP PING request message and said FEC.
Source end equipment is after said BFD conversation establishing success; Periodically send when carrying the MPLS LSP PING request message of BFD descriptor and said Route Distinguisher information simultaneously; After said place end equipment is received said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to said descriptor and said Route Distinguisher information.
Source end equipment is after said BFD conversation establishing success; Periodically send when not carrying the MPLS LSP PING request message of Route Distinguisher information; After said place end equipment is received said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to the FEC in the said MPLS LSP PING request message and the Route Distinguisher information in creating said BFD conversation procedure, known.
Corresponding to said method; The label switched path equipment that guarantees two-way forwarding detecting reliability can use to the source end equipment in the BFD session and also can be used as the place end equipment in the BFD session; When being used for, carry multiprotocol label switching (mpls) label switched path (LSP) the PING request message of Route Distinguisher information to the transmission of place end equipment as source end equipment; When being used for, detect (BFD) session according to Route Distinguisher information the MPLS LSP PING request message of receiving from source end equipment and the unique definite two-way forwarding of forwarding equivalence class (FEC) as place end equipment.
Said label switched path equipment; When also being used for as place end equipment; After receiving said MPLS LSPPING request message, when not matching the BFD session, create new BFD session according to the Route Distinguisher information in the said MPLS LSP PING request message and said FEC.
Said label switched path equipment when also being used for as source end equipment, after said BFD conversation establishing success, periodically sending and carries the MPLS LSPPING request message of BFD descriptor and said Route Distinguisher information simultaneously; When also being used for as place end equipment, receive said MPLS LSP PING request message after, carry out the coupling and the verification of said BFD session according to said descriptor and said Route Distinguisher information.
Said label switched path equipment; When also being used for as source end equipment; After said BFD conversation establishing success, periodically send and do not carry the MPLS LSP PING request message of Route Distinguisher information, when also being used for as place end equipment; After receiving said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to the FEC in the said MPLS LSP PING request message and the Route Distinguisher information in creating said BFD conversation procedure, known.
Specific embodiment
In networking diagram shown in Figure 2; The system that sets up the BFD detection for the MPLS lsp tunnel has comprised source end LSP equipment and place end LSP equipment; The source end equipment that the embodiment of the invention proposed is all identical with place end equipment; The masters equipment that source end equipment is initiated as MPLS LSP BFD, passive side's equipment that place end equipment is initiated as MPLS LSP BFD; The embodiment of the invention is through the described MPLSLSP Ping message of expansion, through the said MPLS Router of MPLS LSP Ping message ID TLV.
Describing with networking diagram shown in Figure 2 for the ease of describing following steps, is example with source end LSP equipment, place end LSP equipment still, specifically may further comprise the steps:
Step S1, source end LSP equipment initiatively initiate BFD and detect as the masters of MPLS LSP BFD;
Step S2, source end LSP equipment structure MPLS LSP Ping request message, encapsulation BFDDiscriminator TLV and MPLS Router ID TLV, the definition of MPLS Router ID TLV is referring to the explanation of accompanying drawing 3;
Step S3, place end LSP equipment receive MPLS LSP Ping request message, carry out local FEC verification according to the FEC information in the message, if verification is unusual, then reply error message according to the RFC4379 agreement; Otherwise execution in step S4;
Step S4; Place end LSP handles BFD Discriminator TLV and the MPL S Router ID TLV in the MPLS LSP Ping request message, carries out local BFD session coupling according to FEC and Router ID, if mate successfully; Local existing BFD session is described; Then directly reply reply message (or can select not reply the reply message), if do not mate successfully, then explanation is the connection that far-end is initiated new BFD session; The BFD conversation description symbol that local distribution is new, and begin to send the BFD detection messages to the source end.
Do not encapsulate BFD Discriminator TLV if only encapsulate MPLSRouter ID TLV during source end LSP equipment structure MPLS LSP Ping request message; Has only MPLS Router ID TLV in the place end LSP Equipment Inspection message and when not having BFD Discriminator TLV; Can select not trigger and create the BFD session, carry out local BFD session coupling according to FEC and Router ID when perhaps place end LSP equipment only carries BFD Discriminator TLV in detecting MPLS LSP Ping request message.
If place end LSP equipment has stored the Router ID of local BFD session; And do not carry Router ID in the MPLS LSP Ping request message; Then the two can mate equally, and MPLS LSP Ping request message does not trigger and generates new BFD session.
Step S5, the BFD of source end LSP equipment and place end LSP opening of device Forwarding plane detects, and periodically sends the detection messages with reception BFD;
Step S6; Source end LSP equipment is in order to detect the FEC of control plane simultaneously; Continue periodically to send MPLS LSP Ping request message; And encapsulate BFD Discriminator TLV and MPLSRouter ID TLV simultaneously, if BFD Discriminator TLV is carried in end LSP equipment configuration in source, all need encapsulate MPLS Router ID TLV information simultaneously; Place end LSP repeating step S3.
In the present embodiment; Even the forward-path of the LSP among Fig. 2 changes; Cause the source IP address in the MPLS LSP Ping request message among the step S6, information such as purpose IP address all change, but owing to effectively used MPLS Router ID TLV; Guaranteed to use fixing Router ID to send all the time; Like this in the place during end treatment step S4, coupling that can be correct and related BFD session of having set up have been avoided wrong coupling and have been caused reporting an error of BFD session mistake.
In sum; The present invention has solved effectively that MPLS LSP BFD testing mechanism causes when path change in the existing standard; The BFD faults detects the problem of Down, and a kind of simple, reliable MPLS LSP BFD detection method is provided, and has guaranteed the accuracy that MPLS LSP BFD detects.Simultaneously, the complete compatibility of the present invention and existing standard.
Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (10)
1. method that guarantees two-way forwarding detecting reliability, wherein,
Source end equipment is carrying multiprotocol label switching (mpls) label switched path (LSP) the PING request message of Route Distinguisher information to the transmission of place end equipment, and said place end equipment detects (BFD) session according to Route Distinguisher information in the said MPLS LSP PING request message and the unique definite two-way forwarding of forwarding equivalence class (FEC).
2. the method for claim 1 is characterized in that,
After said place end equipment is received said MPLS LSP PING request message, when not matching the BFD session, create new BFD session according to the Route Distinguisher information in the said MPLSLSP PING request message and said FEC.
3. method as claimed in claim 2 is characterized in that,
Said source end equipment is after said BFD conversation establishing success; Periodically send and carry the MPLS LSP PING request message of BFD descriptor and said Route Distinguisher information simultaneously; After said place end equipment is received said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to said descriptor and said Route Distinguisher information.
4. method as claimed in claim 2 is characterized in that,
Said source end equipment is after said BFD conversation establishing success; Periodically send and do not carry the MPLS LSP PING request message of Route Distinguisher information; After said place end equipment is received said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to the FEC in the said MPLS LSP PING request message and the Route Distinguisher information in creating said BFD conversation procedure, known.
5. the method for claim 1 is characterized in that,
The mode of in MPLS LSP PING request message, carrying said Route Distinguisher information is in said MPLS LSP PING request message, to increase the said Route Distinguisher type of info length value of indication.
6. label switched path equipment that guarantees two-way forwarding detecting reliability, wherein,
Said label switched path equipment when being used for as source end equipment, carries multiprotocol label switching (mpls) label switched path (LSP) the PING request message of Route Distinguisher information to the transmission of place end equipment; When also being used for, detect (BFD) session according to Route Distinguisher information the MPLS LSP PING request message of receiving from source end equipment and the unique definite two-way forwarding of forwarding equivalence class (FEC) as place end equipment.
7. label switched path equipment as claimed in claim 6 is characterized in that,
Said label switched path equipment; When also being used for as place end equipment; After receiving said MPLS LSPPING request message, when not matching the BFD session, create new BFD session according to the Route Distinguisher information in the said MPLS LSP PING request message and said FEC.
8. label switched path equipment as claimed in claim 7 is characterized in that,
Said label switched path equipment when also being used for as source end equipment, after said BFD conversation establishing success, periodically sending and carries the MPLS LSPPING request message of BFD descriptor and said Route Distinguisher information simultaneously; When also being used for as place end equipment, receive said MPLS LSP PING request message after, carry out the coupling and the verification of said BFD session according to said descriptor and said Route Distinguisher information.
9. label switched path equipment as claimed in claim 7 is characterized in that,
Said label switched path equipment; When also being used for as source end equipment; After said BFD conversation establishing success, periodically send and do not carry the MPLS LSP PING request message of Route Distinguisher information, when also being used for as place end equipment; After receiving said MPLS LSP PING request message, carry out the coupling and the verification of said BFD session according to the FEC in the said MPLS LSP PING request message and the Route Distinguisher information in creating said BFD conversation procedure, known.
10. label switched path equipment as claimed in claim 6 is characterized in that,
Said label switched path equipment carries said Route Distinguisher information in MPLS LSP PING request message mode is in said MPLS LSP PING request message, to increase the said Route Distinguisher type of info length value of indication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210031168.XA CN102571601B (en) | 2012-02-13 | 2012-02-13 | A kind of method and label switched path equipment for ensureing two-way converting detection reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210031168.XA CN102571601B (en) | 2012-02-13 | 2012-02-13 | A kind of method and label switched path equipment for ensureing two-way converting detection reliability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102571601A true CN102571601A (en) | 2012-07-11 |
| CN102571601B CN102571601B (en) | 2018-05-15 |
Family
ID=46416102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210031168.XA Active CN102571601B (en) | 2012-02-13 | 2012-02-13 | A kind of method and label switched path equipment for ensureing two-way converting detection reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102571601B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769543A (en) * | 2012-07-20 | 2012-11-07 | 杭州华三通信技术有限公司 | BFD (Bidirectional Forwarding Detection) method and equipment based on LSP (Label Switching Path) |
| EP2782309A4 (en) * | 2012-11-13 | 2015-03-04 | Huawei Tech Co Ltd | Bidirectional forwarding detection (bfd) session negotiation method, device and system |
| CN107005481A (en) * | 2014-06-30 | 2017-08-01 | 瑞典爱立信有限公司 | The control of return path is detected for two-way converting |
| CN107154882A (en) * | 2017-07-24 | 2017-09-12 | 迈普通信技术股份有限公司 | BFD session establishing methods and device |
| CN107846292A (en) * | 2016-09-19 | 2018-03-27 | 新华三技术有限公司 | The method and apparatus for preventing troubleshooting from postponing |
| CN108123875A (en) * | 2016-11-29 | 2018-06-05 | 中兴通讯股份有限公司 | A kind of bidirectional forwarding detection (BFD) method and device |
| CN110959272A (en) * | 2017-06-01 | 2020-04-03 | 中兴通讯股份有限公司 | Defect detection in IP/MPLS network tunnels |
| WO2020173340A1 (en) * | 2019-02-26 | 2020-09-03 | 中兴通讯股份有限公司 | Bier-based bidirectional forwarding detection session creation method, bfir, bfer, system, and storage medium |
| CN112291148A (en) * | 2020-10-23 | 2021-01-29 | 新华三信息安全技术有限公司 | Method for detecting BFD forwarding path quality through BFD ping |
| CN113132223A (en) * | 2020-01-15 | 2021-07-16 | 华为技术有限公司 | Fault detection method and equipment |
| CN113315701A (en) * | 2020-02-27 | 2021-08-27 | 中兴通讯股份有限公司 | Path detection method, electronic device and storage medium |
| WO2022007653A1 (en) * | 2020-07-06 | 2022-01-13 | 华为技术有限公司 | End-to-end path discovery and use method and apparatus |
| WO2024022115A1 (en) * | 2022-07-29 | 2024-02-01 | 中兴通讯股份有限公司 | Method and apparatus for implementing bfd in bier network, and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1829191A (en) * | 2005-02-28 | 2006-09-06 | 华为技术有限公司 | Method for realizing FEC bidirectional forwarding detection |
| CN101141330A (en) * | 2007-10-23 | 2008-03-12 | 华为技术有限公司 | Method, system and equipment to establish BFD detection for LSP tunnel |
| US7463591B1 (en) * | 2001-06-25 | 2008-12-09 | Juniper Networks, Inc. | Detecting data plane liveliness of a label-switched path |
| CN101447900A (en) * | 2008-12-15 | 2009-06-03 | 华为技术有限公司 | Method, system and device for building bidirectional forwarding detection |
| CN101453414A (en) * | 2007-11-30 | 2009-06-10 | 华为技术有限公司 | Head node protection method, system and equipment for point to multiple points label switch path |
-
2012
- 2012-02-13 CN CN201210031168.XA patent/CN102571601B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7463591B1 (en) * | 2001-06-25 | 2008-12-09 | Juniper Networks, Inc. | Detecting data plane liveliness of a label-switched path |
| CN1829191A (en) * | 2005-02-28 | 2006-09-06 | 华为技术有限公司 | Method for realizing FEC bidirectional forwarding detection |
| CN101141330A (en) * | 2007-10-23 | 2008-03-12 | 华为技术有限公司 | Method, system and equipment to establish BFD detection for LSP tunnel |
| CN101453414A (en) * | 2007-11-30 | 2009-06-10 | 华为技术有限公司 | Head node protection method, system and equipment for point to multiple points label switch path |
| CN101447900A (en) * | 2008-12-15 | 2009-06-03 | 华为技术有限公司 | Method, system and device for building bidirectional forwarding detection |
Non-Patent Citations (2)
| Title |
|---|
| K.KOMPELLA等: "《RFC4379》", 28 February 2006 * |
| R.AGGARWAL: "《RFC5884》", 30 June 2010 * |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769543A (en) * | 2012-07-20 | 2012-11-07 | 杭州华三通信技术有限公司 | BFD (Bidirectional Forwarding Detection) method and equipment based on LSP (Label Switching Path) |
| CN102769543B (en) * | 2012-07-20 | 2015-05-20 | 杭州华三通信技术有限公司 | BFD (Bidirectional Forwarding Detection) method and equipment based on LSP (Label Switching Path) |
| EP2782309A4 (en) * | 2012-11-13 | 2015-03-04 | Huawei Tech Co Ltd | Bidirectional forwarding detection (bfd) session negotiation method, device and system |
| US9444709B2 (en) | 2012-11-13 | 2016-09-13 | Huawei Technologies Co., Ltd. | Bidirectional forwarding detection BFD session negotiation method, device, and system |
| CN107005481A (en) * | 2014-06-30 | 2017-08-01 | 瑞典爱立信有限公司 | The control of return path is detected for two-way converting |
| US11038634B2 (en) | 2014-06-30 | 2021-06-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Control for BFD return path |
| CN107846292A (en) * | 2016-09-19 | 2018-03-27 | 新华三技术有限公司 | The method and apparatus for preventing troubleshooting from postponing |
| US11206176B2 (en) | 2016-09-19 | 2021-12-21 | New H3C Technologies Co., Ltd. | Preventing failure processing delay |
| CN108123875A (en) * | 2016-11-29 | 2018-06-05 | 中兴通讯股份有限公司 | A kind of bidirectional forwarding detection (BFD) method and device |
| CN110959272A (en) * | 2017-06-01 | 2020-04-03 | 中兴通讯股份有限公司 | Defect detection in IP/MPLS network tunnels |
| CN110959272B (en) * | 2017-06-01 | 2021-11-02 | 中兴通讯股份有限公司 | Defect detection in IP/MPLS network tunnels |
| CN107154882B (en) * | 2017-07-24 | 2019-11-22 | 迈普通信技术股份有限公司 | BFD session establishing method and device |
| CN107154882A (en) * | 2017-07-24 | 2017-09-12 | 迈普通信技术股份有限公司 | BFD session establishing methods and device |
| WO2020173340A1 (en) * | 2019-02-26 | 2020-09-03 | 中兴通讯股份有限公司 | Bier-based bidirectional forwarding detection session creation method, bfir, bfer, system, and storage medium |
| US11991066B2 (en) | 2019-02-26 | 2024-05-21 | Zte Corporation | Method of establishing bidirectional forwarding detection session based on BIER, and BFIR, BFER, system and storage medium |
| CN113132223A (en) * | 2020-01-15 | 2021-07-16 | 华为技术有限公司 | Fault detection method and equipment |
| CN113315701A (en) * | 2020-02-27 | 2021-08-27 | 中兴通讯股份有限公司 | Path detection method, electronic device and storage medium |
| WO2021169516A1 (en) * | 2020-02-27 | 2021-09-02 | 中兴通讯股份有限公司 | Path detection method, electronic device, and storage medium |
| WO2022007653A1 (en) * | 2020-07-06 | 2022-01-13 | 华为技术有限公司 | End-to-end path discovery and use method and apparatus |
| CN112291148A (en) * | 2020-10-23 | 2021-01-29 | 新华三信息安全技术有限公司 | Method for detecting BFD forwarding path quality through BFD ping |
| CN112291148B (en) * | 2020-10-23 | 2022-03-29 | 新华三信息安全技术有限公司 | Method for detecting BFD forwarding path quality through BFD ping |
| WO2024022115A1 (en) * | 2022-07-29 | 2024-02-01 | 中兴通讯股份有限公司 | Method and apparatus for implementing bfd in bier network, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102571601B (en) | 2018-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102571601A (en) | Method for ensuring bidirectional forwarding detection reliability and label switching path equipment | |
| EP2395702B1 (en) | Method and device for processing fault | |
| CN101427501B (en) | Method and apparatus for consistency between MPLS traffic engineering forwarding and control planes | |
| US8374095B2 (en) | Connection verification for MPLS label switched paths and pseudowires | |
| CN107547383B (en) | Path detection method and device | |
| CN101335689B (en) | Traceroute implementing method and equipment | |
| US8351337B2 (en) | Tools that facilitate diagnostics for mobile backhaul networks | |
| CN101610535B (en) | Method, system and device for ensuring BFD conversation stability on the scene of multilink direct connection | |
| CN108964943B (en) | Method and device for realizing IOAM packaging | |
| US9059905B2 (en) | Methods and arrangements in an MPLS-TP network | |
| WO2006099784A1 (en) | A method for detecting link fault between end-to-end nodes in a hybrid network | |
| CN102769543B (en) | BFD (Bidirectional Forwarding Detection) method and equipment based on LSP (Label Switching Path) | |
| CN102868569B (en) | The method for testing performance of Layer3 Virtual Private Network, node and system | |
| US10447589B2 (en) | Transport segment OAM routing mechanisms | |
| CA2633720A1 (en) | A method and system for obtaining path maximum transfer unit in network | |
| CN102594600A (en) | Method and system for determining failure position of bidirectional forwarding detection session | |
| CN101826990A (en) | Method, device and system for detecting connectedness of virtual pseudo wires | |
| CN103490921B (en) | Network protection method, device, lower link point and system | |
| CN103580894A (en) | Method, device and system for operation, administration and maintenance (OAM) configuration | |
| JP2017034463A (en) | Protection method, communication system, and end node | |
| CN104468208A (en) | Detection and recovery method and device for communication faults | |
| CN112737949B (en) | Fault detection method and device, electronic equipment and computer readable medium | |
| US20080267080A1 (en) | Fault Verification for an Unpaired Unidirectional Switched-Path | |
| Fang et al. | LDP failure detection and recovery | |
| CN104219068A (en) | Method of channel fault notification and network equipment |
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 |