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Method for implementing virtual circuit state consistency in virtual special local network service

A virtual private and virtual circuit technology, applied in the field of communication, can solve the problem of inconsistent virtual circuit status, and achieve the effect of reducing the forwarding burden and improving the stability.

Inactive Publication Date: 2006-11-29
HUAWEI TECH CO LTD
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  • Description
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Problems solved by technology

[0017] The purpose of the present invention is to provide a method for realizing the state consistency of virtual circuits in VPLS, so as to solve the problem of inconsistent state of corresponding virtual circuits between PEs in VPLS

Method used

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  • Method for implementing virtual circuit state consistency in virtual special local network service
  • Method for implementing virtual circuit state consistency in virtual special local network service

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Embodiment Construction

[0041] The present invention provides a method for realizing the state consistency of virtual circuits in VPLS. The core of the present invention is: the extended NLRI message sent by the sending end PE to the remote PE carries the CSV attribute, and the remote PE The value of the CSV attribute in the extended NLRI message updates the state of the corresponding virtual circuit, so as to realize the consistency of the state of the two-way virtual circuit between the sending end PE and the remote PE.

[0042] Describe the present invention in detail below in conjunction with accompanying drawing, the processing flow of the method described in this method is as follows figure 2 shown, including the following steps:

[0043] Step 2-1, PEs send extended NLRI messages carrying local VPLS site information to establish a two-way virtual circuit, and check the status of the tunnel to the remote PE in real time.

[0044] The present invention introduces a new attribute in the NLRI mes...

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Abstract

This invention provides a method for realizing consistent virtual circuit state in the VPLS including: a sending end edge router PE sends expanded NLRI messages to a far end PE, said far end PE refreshes the state of the virtual circuit of said far end PE to said send end PE to realize the consistency of the virtual circuit between the PE of the send end and the far end.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for realizing the state consistency of virtual circuits in VPLS (Virtual Private Local Area Network Service). Background technique [0002] As the IP network becomes the dominant network of the operator, services based on the IP network are more urgent. In order to provide enterprises with services based on IP networks, telecom operators initially provided Layer 2 links for enterprises in the form of leased leased lines. The main disadvantages of this method are: long construction time, lines that cannot be shared, expensive, and difficult to manage . Since then, with the development of ATM (asynchronous transfer mode, asynchronous transfer mode) and frame relay technology, telecom operators have turned to use virtual circuits to provide customers with point-to-point Layer 2 connections, and customers can then connect to Build your own three-layer network on the Internet to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/28
CPCH04L45/10H04L12/4641H04L45/02H04L43/0811
Inventor 文远癸周鹏胡春哲
Owner HUAWEI TECH CO LTD
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