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Method and device for protecting router

A routing and router technology, applied in the communication field, can solve problems such as defects in link reliability protection, and achieve the effect of easy deployment and small table item capacity

Active Publication Date: 2011-07-13
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0034] The present invention provides a route protection method and equipment to solve the problem of defects in link reliability protection between LSRs in the prior art

Method used

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  • Method and device for protecting router

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Embodiment Construction

[0055] As mentioned in the background technology, on the one hand, the existing link backup scheme has a quantitative defect, that is, the backup link and the protected link are configured at a ratio of 1:1, which leads to the need to record one by one in the forwarding table For the backup link of each protected link, the amount of recorded information is enlarged. On the other hand, the type of the backup link is also limited. It must be the same type of link as the protected link to achieve the corresponding backup protection. , which obviously limits the application scope and application scenarios of the backup link.

[0056] In order to solve such problems, the present invention proposes a routing protection method, which implements backup protection for the protected link through an end-to-end path, and establishes corresponding multi-level forwarding entries to realize information forwarding.

[0057] Such as Figure 5 As shown, it is a schematic flow chart of a routin...

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Abstract

The invention discloses a method and device for protecting a router. According to the invention, the configuration of a backup path for an end-to-end link between LSRs (Label Switching Router) is realized, and a corresponding forwarding item is established, therefore, the backup path can be used for protecting multiple arbitrary LSPs (Label Switched Path) on the link. Compared with the prior art, the invention has the advantages that the item capacity established through the technical scheme is fewer with more protected LSPs; and moreover, the tail node of the corresponding backup path is definite, which is more convenient to configure the protection switch mechanism of a network.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a route protection method and equipment. Background technique [0002] LDP (Label Distribution Protocol, Label Distribution Protocol) is responsible for the classification of forwarding equivalence classes, the distribution of labels, the transmission of distribution results, and the establishment of label switching paths in Multi-Protocol Label Switching (Multi-Protocol Label Switching). The control protocol of a series of processes such as maintenance and maintenance, in the prior art, its working process mainly includes the following four processes: [0003] 1. Peer discovery process [0004] All LSRs (Label Switching Routers, Label Switching Routers) that wish to establish an LDP session will periodically send Hello messages to the network to announce their own existence to other network devices. By receiving Hello messages, each LSR in the network can automatically ...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/24H04L45/24H04L45/28H04L45/50
CPCH04L45/50H04L45/28H04L45/22H04L45/507
Inventor 叶金荣
Owner NEW H3C TECH CO LTD
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