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Method for realizing M:N protection in T-MPLS network

A network and protection switching technology, applied in the field of optical communication, which can solve the problems such as the inability to achieve multiple line protection and the inability to ensure smooth communication.

Inactive Publication Date: 2010-03-10
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the linear protection system given in the current protocol standards, only one protection line can be provided. When multiple working lines require switching at the same time, only one line can be protected, and the protection of multiple lines cannot be realized. In addition, when In the special case of simultaneous failure of the active and standby networks, smooth communication cannot be guaranteed

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  • Method for realizing M:N protection in T-MPLS network
  • Method for realizing M:N protection in T-MPLS network
  • Method for realizing M:N protection in T-MPLS network

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Embodiment Construction

[0033] The purpose of the present invention is to provide a method for realizing M:N protection in a T-MPLS network, thereby effectively ensuring that effective protection can still be provided for working LSPs that need protection when multiple links fail.

[0034] By adopting the M:N linear architecture, the protection of N working LSPs by M protection label switching paths (Label Switching Path: LSP) can be realized in the T-MPLS network. When M working LSPs fail, they can be switched to different protection LSPs.

[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] refer to figure 1 , is a flowchart of a method for realizing M:N protection in the T-MPLS network of the present invention. Described method specifically comprises the following steps:

[0037] Step S101: ...

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Abstract

The invention relates to a method for realizing M:N protection in a T-MPLS network, and the method comprises the following steps: judging whether the received alarm information includes the designatedprotection LSP information or not, if so, using the designated protection LSP for transferring APS protocol bytes; if not, selecting the protection LSP, using the selected the protection LSP for transferring the APS protocol bytes; and establishing or canceling the protection LSP according to an APS signal message. The adoption of the embodiment of the invention can effectively ensure that the protection can be still provided for the working LSP which needs the protection when a plurality of chains go wrong.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a method for realizing M:N protection in a T-MPLS network. Background technique [0002] Transport Multi Protocol Label Switching (Transport Multi Protocol Label Switching: T-MPLS) is a packet transport application-oriented technology, which is developed on the basis of traditional IP mechanism transport technology. T-MPLS adopts the connection-oriented networking mode, combines the rich functions of the transport network, and supports the carrier-class Ethernet technology with a high degree of technical coordination and operation at the IP / MPLS level, which can meet the needs of the carrier-class packet transport network in multi-service support, scalability, reliability, quality of service, and carrier-grade network management. [0003] Linear protection is the main method to protect links in T-MPLS network. In the linear protection system, protection switching is complet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B1/74
Inventor 张永军罗彦婷雷学义李扬
Owner STATE GRID CORP OF CHINA
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