Method and apparatus for managing label switching route tunnel information

A label switching path and tunnel information technology, which is applied in the field of label switching path tunnel information management, can solve the problems of complex operation, inability to quickly restore VPN services, and time-consuming problems

Active Publication Date: 2008-11-05
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of dynamically refreshing a large number of VPN forwarding entries is not only complicated to operate, but also takes a certain amount of

Method used

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  • Method and apparatus for managing label switching route tunnel information
  • Method and apparatus for managing label switching route tunnel information
  • Method and apparatus for managing label switching route tunnel information

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Embodiment Construction

[0050] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0051] The basic idea of ​​the present invention is to fix the LSP tunnel ID used by the VPN, so that the LSP tunnel ID information in the VPN forwarding table is fixed, so that when the LSP tunnel changes, only the NHLFE table related to the changed LSP tunnel needs to be refreshed It does not need to refresh all related VPN forwarding entries, thereby reducing the complexity of information maintenance and saving refreshing time, so that VPN services can be quickly restored after the LSP tunnel changes.

[0052] In order to achieve a fixed LSP tunnel ID, the PE needs to bind an LSP tunnel ID to the destination of each LSP tunnel (that is, each peer PE). Wherein, the LSP tunnel includes both the established LSP tunnel and the unestablished LSP tunnel. Fo...

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PUM

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Abstract

The invention discloses a method for managing label switching path (LSP) tunnel information, including: respectively binding an LSP tunnel identification for every LSP tunnel destination, wherein, the LSP tunnel destination is in one-to-one correspondence with the LSP tunnel identification; acquiring the LSP tunnel identification bond to the LSP tunnel destination and recording into the VPN forwarding table, during establishing an VPN forwarding table arriving the LSP tunnel identification; during establishing the LSP tunnel, using the LSP tunnel identification bond to the LSP tunnel destination to identify the LSP tunnel, and establishing corresponding NHLFE table for the LSP tunnel; and refreshing the NHLFE table corresponding to the variation of the LSP tunnel, when the LSP tunnel changes. The invention also discloses an apparatus for managing LSP tunnel information. The invention can reduce information maintenance complexity and reduce VPN service recovery time, when the LSP tunnel changes.

Description

Technical field [0001] The present invention relates to multi-protocol label switching (MPLS, Multi Protocol Label Switch) technology, in particular to a method and device for managing label switch path (LSP, Label Switch Path) tunnel information. Background technique [0002] MPLS is a technology that uses labels for message forwarding. It has the advantages of fast forwarding, QoS guarantee, and multi-service support. It plays an important role in the next-generation telecommunications network. MPLS VPN is a virtual private network (VPN, Virtual Private Network) based on MPLS technology. It applies MPLS technology to network routing and switching equipment, which can be used to construct broadband Intranet and Extranet to meet a variety of flexible business requirements. [0003] figure 1 Shows a typical MPLS VPN network diagram, including: customer edge equipment (CE, CustomEdge), backbone network edge equipment (PE, Provider Edge), and backbone network core equipment (P, Pr...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L29/06H04L45/50
Inventor 俞国平
Owner NEW H3C TECH CO LTD
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