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MPLS-TP-based looped network steering protection method

A technology of ring network and nodes on the ring, applied in the field of data communication, can solve the problems of slow protection, increase topology discovery protocol, complex protocol, etc., achieve the effect of fast switching and improve the performance of ring network

Inactive Publication Date: 2012-04-11
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] 3) Increasing the topology discovery protocol will increase the complexity of the protection protocol
[0019] Through the analysis of the above problems, the traditional Steering protection method needs the support of the topology discovery protocol, which has the problems of slow protection speed and complex protocol

Method used

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  • MPLS-TP-based looped network steering protection method
  • MPLS-TP-based looped network steering protection method
  • MPLS-TP-based looped network steering protection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0058] Embodiment, the situation that the ring network breaks down:

[0059] Such as Figure 4a As shown, the ring network contains nodes A, B, C, D, E, F and G, and the links contained are , , , , and links. LISP1 is a label switching path from node A to node D. At this time, its outgoing port on node A is port e, and its working path and working label are described as:

[0060] A{WI}→B{W2}→C{W3}→D;

[0061] The protection path and protection label are:

[0062] A{P1'}→F{P2'}→E{P3'}→D;

[0063] Such as Figure 4b As shown in , the link of the ring network fails, and node B blocks the forwarding function of the data packets of the adjacent port of the failed link, and at the same time switches the secondary working path of the LSP that is connected to the ring by node B and is affected Send data packets to the protection path, and periodically send SF packets along the intact port, the processing method of node C is the same as that of node B.

[0064] After receiving...

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Abstract

The invention discloses an MPLS-TP-based looped network steering protection method, which comprises: 1) configuring the forwarding entries of an LSP; and 2) clearing of looped network faults. The method does not need support from a topology discovery protocol and can realize quick switching, which has a great significance for the improvement on the performance of MPLS-TP-based looped networks.

Description

technical field [0001] The invention relates to the field of data communication, in particular to an MPLS-TP-based ring network Steering protection method. Background technique [0002] MPLS (Multi-protocol Label Switching, referred to as Multi-protocol Label Switching) is the most important technology in today's packet switching network. It has developed from point-to-point to point-to-multipoint. It is necessary to supplement powerful OAM (operation and management) functions in MPLS. MPLS-TP (MPLS Transport Profile, namely: MPLS transmission framework) is proposed under this background. It is a joint work composed of ITU-T and IETF The protocol family developed by the JWT group involves multiple technologies such as OAM, survivability, network management and control plane, and aims to improve the function and interoperability of the transport network. IETF is mainly completed by working groups such as MPLS, CCAMP, PWE3 and L2VPN. ITU-T has also formulated some standards, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/24H04L12/437H04L45/24
Inventor 王斌
Owner NANJING UNIV OF POSTS & TELECOMM