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Research and Implementation of MPLS Pseudowire Fault Detection and Recovery Technology Based on VCCV

Author: QinChuan
Tutor: HuaXin
School: Southwest Jiaotong University
Course: Communication and Information System
Keywords: VC connectivity verification Pseudo wire emulation edge to edge Multiprotocol Label Switching Fault detection Redundancy protection
CLC: TN915.06
Type: Master's thesis
Year: 2011
Downloads: 8
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Abstract


The edge-to-edge pseudo-wire emulation (PWE3) is a solution to traditional communication network and the integration of existing packet switched network (PSN), in order to achieve the sharing of resources and the expansion of the network. PWE3 aims to provide at least a must-have feature for business simulation, and makes the simulation business to achieve specified business needs real. As PWE3 the deployed, the increasingly strong demand for its corresponding OAM mechanisms. To PWE3 actionable maintainability, IETF PWE3 working group defined the virtual circuit connectivity verification (VCCV) protocol. The VCCV is the OAM mechanism of a specific PWE3 VCCV can establish a control channel between the pseudo-wire terminal, the OAM messages sent between two PE via the control channel, enabling pseudowire forwarding path end-to-end fault detection. The carriers need to be provided for the pseudo wire service higher reliability. VCCV Bidirectional Forwarding Detection (BFD) connectivity verification packet type for the pseudo-wire provides a rapid and sustained failure detection mechanism, this mechanism pseudowire redundancy networking millisecond pseudo-wire the reliability of the protection switching, so that the pseudo-wire business effectively protected. Multi-Protocol Label Switching (MPLS) network operators in the implementation of the PWE3 Select type of packet-switched network, this article focuses on in VCCV dynamic MPLS based single segment pseudo-wire fault detection and redundancy protection technology. First member to the VCCV the four components of the unit, in-depth research and analysis of the technical principles of the VCCV design, followed by the module on the basis of the existing MPLS LDP, MPLS OAM, BFD and VCCV module, the module for network management to provide a simple and efficient pseudo-line fault detection tools. VCCV-based pseudo-wire redundancy protection technology is another focus of this article. In a detailed analysis the two pseudowire redundancy networking solutions based on combining the abovementioned the VCCV modules, the pseudowire redundancy protection module is designed and implemented. Pre-built module on the master card the pseudowire redundancy protection group, distributed on each line card BFD VCCV pseudo-wire fault detection, pseudo-line access link between the OAM mapping, and according to the BFD VCCV notice pseudo line connectivity state pseudo-line protection switching, networking test of the program's fault detection and fault recovery time to the millisecond, to meet the needs of practical application.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication network > General issues > Testing, operation
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