CN102404144B - Dual-homing access protection method based on Multi-protocol Label Switching-Transport Profile ((MPLS-TP) network - Google Patents
Dual-homing access protection method based on Multi-protocol Label Switching-Transport Profile ((MPLS-TP) network Download PDFInfo
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- CN102404144B CN102404144B CN201110365800.XA CN201110365800A CN102404144B CN 102404144 B CN102404144 B CN 102404144B CN 201110365800 A CN201110365800 A CN 201110365800A CN 102404144 B CN102404144 B CN 102404144B
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Abstract
The invention relates to protection of a Multi-protocol Label Switching-Transport Profile (MPLS-TP) network, and particularly to a dual-homing access protection method based on the MPLS-TP network. The method comprises the steps that: 1), network Provider Equipment (PE) of dual-homing access protection employs Label Switched Path (LSP) protection and then is in dual-homing connection with Client Equipment (CE); and 2), on a dual-homing network element, label actions of two LSPs under an LSP protection group related with a dual-homing protection group are adjusted according to dual-homing active and standby states, so that homologous and non-homoclinic LSPs are converted into homologous and homoclinic LSPs. According to the dual-homing access protection method based on MPLS-TP network disclosed by the invention, on the dual-homing network element, label actions of two LSPs under an LSP protection group related with a dual-homing protection group are adjusted according to active and standby states of the dual-homing protection group, so that homologous and non-homoclinic LSPs are converted into homologous and homoclinic LSPs; and then dual-homing protection of the MPLS-TP network is accomplished by utilizing standard lsp 1:1 protection.
Description
Technical field
The present invention relates to the protection of MPLS-TP network, especially a kind of dual-homed access guard method based on MPLS-TP network.
Background technology
The dual-homed access of the network of MPLS-TP is generally applied as a plurality of customer equipments as CE2, CE3 ... its business arrives CE1 through network insertion, simultaneously the dual-homed network that is linked into of CE1.For providing reliable dual-homed access, user become a common requirements of MPLS-TP network.But because dual-homed access protection does not have relevant standard criterion in MPLS-TP network.Each equipment vendor completes according to the equipment characteristic designed, designed proprietary protocol of oneself.This cannot dock while just causing Virtual network operator Duo equipment vendors equipment network to use.
Summary of the invention
Defect and deficiency that the present invention exists for solving above-mentioned prior art, provide a kind of being easy to carry out, and can complete the dual-homed access guard method based on MPLS-TP network of multi-vendor equipment docking simultaneously.
Technical scheme of the present invention: a kind of dual-homed access guard method based on MPLS-TP network, it comprises: 1) the upper LSP of employing of the Virtual network operator equipment PE of dual-homed access protection is connected with customer equipment CE dual homed after protecting again;
2), on dual homed network element, the label of adjusting two LSP under the LSP protection group relevant to dual-homing protection group according to dual homed activestandby state moves, by homology not the LSP of chummage be converted to the LSP of homology chummage.
Preferably, step 2) in, in dual homed master network element, the LSP of the LSP protection group relevant to dual-homing protection group entered to label action as regular event; Dual homed for network element on, the action of the label of two LSP under the LSP protection group relevant with dual-homing protection group is revised as SWAP action, two LSP is united by a seam.
Preferably, step 1) in PE comprise PE1, PE2, PE3 and PE4, step 1) in CE comprise CE1, CE2 and CE3.
Preferably, on PE1/PE4, two LSP of T1/T2 form 1:1 protection; On PE2, T1 and t1 form lsp1:1 protection; On PE3, T1 and t1 form lsp1:1 protection; Between PE2 and PE3, dispose a TUNNEL as the signalling path of dual homed; At PE1/PE4 deploy PW, corresponding PW on PE2/PE3 deploy and PE1/PE4; In CE1 deploy Ethernet link clustering, at PE2, the dynamic or static MC-LAG of PE3 deploy.
Preferably, at the OAM of PE1 deploy LSP, the PE3/PE4 deploy OAM corresponding with LSP on PE1 on two dual homed nodes.
The present invention by moving according to the label of two LSP under the active and standby adjustment of the dual-homing protection group LSP protection group relevant with dual homed on dual homed network element; homology not the LSP of chummage be converted into the LSP of homology chummage, then utilize the lsp1:1 of standard to protect the dual-homing protection of MPLS-TP network.
Accompanying drawing explanation
Fig. 1 is the dual-homed theory diagram of existing MPLS-TP network;
Fig. 2 is theory diagram of the present invention;
Fig. 3 is that the present invention completes the lsp1:1 OAM configuration schematic diagram in when protection.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but is not the restriction to the utility model protection range.
As shown in Figure 1, a plurality of customer equipments of dual-homed access of MPLS-TP network are as CE2 and CE3 etc., and its business is linked into CE1 through provider edge equipment PE1, PE4, PE2 and PE3 respectively, simultaneously the dual-homed network that is linked into of CE1.
As shown in Figure 2, a kind of dual-homed access guard method based on MPLS-TP network, the steps include:
A. on all PE, according to standard lsp1:1, dispose,
PE1 and PE4 are upper, and two LSP of T1/T2 form 1:1 protection
PE2 is upper, and T1 and t1 form LSP1:1 protection, and T2 and t2 form lsp1:1 protection.
PE3 is upper, and T1 and t1 form LSP1:1 protection, T, 2 and t2 form lsp1:1 protection.
B. between PE2 and PE3, dispose a TUNNEL (network channel) as the signalling path of dual homed, ta as shown in Figure 2.
The deployment of C.PW,
1. at PE1/PE4 deploy PW;
2. corresponding PW (PE2, the PW of the corresponding PE1/PE4 on PE3 disposes should be identical) on PE2/PE3 deploy and PE1/PE4.
The deployment of D.MC-LAG,
1. in CE1 deploy Ethernet link clustering, its member port is illustrated dual if1 and dualif2.
2. or static MC-LAG dynamic in PE2/PE3 deploy.
Protection philosophy:
Network side protection is completed by lsp1:1.On PE2/PE3, when the standby state of NE in dual homed, carry out T1, t1; T2, t2 ... bridge joint.In the time of the major state of NE in dual homed, complete landing of LSP.Can be summarized as according to the state of dual homed complete LSP homology not the bridge joint of chummage be converted to the standard LSP protection of homology chummage.
In order to complete the detection of LSP state, need implement LSP OAM according to Fig. 3.For simplicity of illustration.Fig. 3 has only described PE1 and PE3, and the OAM on PE4 disposes.Similar and the PE1 of the deployment of PE2.
OAM at PE1 deploy LSP is designated as MEP1, MEP2.On two dual homed nodes, on PE3/PE4, need to dispose the MEP corresponding with LSP on PE1, be designated as MEP1a, MEP2a.
Dual homed for network element on, the alarm report and the oam message that suppress the PW of LSP and carrying thereof send.Alarm report and the oam message of in dual homed master network element, opening the PW of LSP and carrying thereof send.
The present invention by moving according to the label of two LSP under the active and standby adjustment of the dual-homing protection group LSP protection group relevant with dual homed on dual homed network element; homology not the LSP of chummage be converted into the LSP of homology chummage, then utilize the lsp1:1 of standard to protect the dual-homing protection of MPLS-TP network.
Embodiments of the invention have following characteristics with other at present existing scheme contrasts relatively in addition:
Claims (4)
1. the dual-homed access guard method based on MPLS-TP network, is characterized in that: it comprises the steps:
1) the upper LSP of employing of the Virtual network operator equipment PE of dual-homed access protection is connected with customer equipment CE dual homed after protecting again;
2), on dual homed network element, the label of adjusting two LSP under the LSP protection group relevant to dual-homing protection group according to dual homed activestandby state moves, by homology not the LSP of chummage be converted to the LSP of homology chummage;
Step 2) in, in dual homed master network element, the label that enters of the LSP of the LSP protection group relevant to dual-homing protection group is moved as regular event; Dual homed for network element on, the label action of two LSP under the LSP protection group relevant with dual-homing protection group is revised as to SWAP action, two LSP are united by a seam.
2. a kind of dual-homed access guard method based on MPLS-TP network according to claim 1, is characterized in that: step 1) in PE comprise PE1, PE2, PE3 and PE4, step 1) in CE comprise CE1, CE2 and CE3.
3. a kind of dual-homed access guard method based on MPLS-TP network according to claim 2, is characterized in that: on PE1/PE4, two LSP of T1/T2 form 1:1 protection; On PE2, T1 and t1 form lsp1:1 protection, and T2 and t2 form lsp1:1 protection; On PE3, T1 and t1 form lsp1:1 protection, and T2 and t2 form lsp1:1 protection; Between PE2 and PE3, dispose a TUNNEL as the signalling path of dual homed; At PE1/PE4 deploy PW, corresponding PW on PE2/PE3 deploy and PE1/PE4; In CE1 deploy Ethernet link clustering, at PE2, the dynamic or static MC-LAG of PE3 deploy.
4. a kind of dual-homed access guard method based on MPLS-TP network according to claim 3, is characterized in that: at the OAM of PE1 deploy LSP, and the PE3/PE4 deploy OAM corresponding with LSP on PE1 on two dual homed nodes.
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| CN102710440B (en) * | 2012-05-29 | 2016-01-13 | 杭州晨晓科技股份有限公司 | A kind of two centers application method of dual-homing protection of MPLS-TP network |
| CN102891759B (en) * | 2012-10-19 | 2016-02-03 | 杭州晨晓科技股份有限公司 | A kind of ring protection method of the multicast service based on MPLS-TP network |
| CN105119824B (en) * | 2015-06-30 | 2018-11-16 | 华为技术有限公司 | A kind of message forwarding method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902353A (en) * | 2009-05-31 | 2010-12-01 | 华为技术有限公司 | Protecting method, device and system of packet network |
| CN102185773A (en) * | 2011-05-09 | 2011-09-14 | 杭州华三通信技术有限公司 | Multi-protocol label switching transport profile ring protection switching method and node |
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| CN1909501A (en) * | 2005-08-05 | 2007-02-07 | 华为技术有限公司 | Method for end to end service rapid convergence and route device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902353A (en) * | 2009-05-31 | 2010-12-01 | 华为技术有限公司 | Protecting method, device and system of packet network |
| CN102185773A (en) * | 2011-05-09 | 2011-09-14 | 杭州华三通信技术有限公司 | Multi-protocol label switching transport profile ring protection switching method and node |
Non-Patent Citations (2)
| Title |
|---|
| 基于分组传送网的业务保护方法和应用;欧阳春波;《技术交流》;20110731;第59页左栏第1行至第6行及图5 * |
| 欧阳春波.基于分组传送网的业务保护方法和应用.《技术交流》.2011,参见第56页-60页. |
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Address after: Seven, building two, building 51, No. 310052 Xing Xing Road, Hangzhou, Zhejiang, Binjiang District Patentee after: Hangzhou Chenxiao Technologies Co., Ltd. Address before: Seven, building two, building 51, No. 310052 Xing Xing Road, Hangzhou, Zhejiang, Binjiang District Patentee before: Hangzhou Chenxiao Technologies Co.,Ltd. |
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