Multiprotocol label exchanged ring network protection method, device and system

A multi-protocol labeling and ring protection technology, applied in the field of network communication, can solve problems such as high network resource overhead and complex configuration

Active Publication Date: 2011-04-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a multi-protocol label switching ring network protection method, d

Method used

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  • Multiprotocol label exchanged ring network protection method, device and system
  • Multiprotocol label exchanged ring network protection method, device and system
  • Multiprotocol label exchanged ring network protection method, device and system

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Embodiment Construction

[0028] In a ring network in the embodiment of the present invention, there are four ring channels logically, which are clockwise ring working channel, clockwise ring protection channel, counterclockwise ring working channel and counterclockwise ring protection channel, and message Which channel is passed through, the corresponding label of the channel is pressed into the outermost layer of the message. The services of the clockwise working channel are protected by the counterclockwise protection channel, and the services of the counterclockwise working channel are protected by the clockwise protection channel. The above-mentioned ring channel is a logical link, which can be carried on a physical two-fiber or four-fiber ring.

[0029] The service protected by the ring network can be LSP or pseudo-wire (Pseudo-Wire, PW). If the protected service is LSP, the logical ring channel is formed by the tunnel; if the protected service is PW, the logical ring channel is formed by the LSP...

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Abstract

The embodiment of the invention aims at providing a multiprotocol label exchanged ring network protection method, device and system for solving the problems that the traditional ring network protection scheme of MPLS (Multi-Protocol Label Switching) has complex configuration and network resources have high expenditure. The system comprises a ring-inlet node, a ring network node and a ring-outlet node. By adopting the technical scheme provided by the embodiment of the invention, a message is forwarded according to configuration information of a ring network protection channel label instead of a non-service label when the outmost layer label of the message is the ring network protection channel label and an outgoing interface of the message is not protected and switched. The invention provides the same protection channel for messages of different service labels and solves the problems that the traditional ring network protection scheme of the MPLS has complex configuration and network resources have high expenditure.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a ring network protection method, device and system for multi-protocol label switching. Background technique [0002] A multi-protocol label switching (Multi-Protocol Label Switch, MPLS) technology is a technology that adopts a label switching technology to realize fast switching and transmission of packet services. Traditionally, the MPLS network adopts fast rerouting (Fast ReRoute, FRR), linear automatic protection switching (automatic protection switching, APS) and some existing MPLS ring network technologies to realize service protection. However, these technologies are complicated to configure and require a lot of network resources, which cannot well meet the protection requirements of large-scale transmission networks. [0003] The existing MPLS ring protection scheme is based on the physical ring topology, and the service add / drop and protection switch are performed a...

Claims

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Application Information

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IPC IPC(8): H04L12/437H04L12/56
CPCH04L45/22H04L45/28H04L45/50
Inventor 陈建群张海燕
Owner HUAWEI TECH CO LTD
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