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Backup method and backup device of link-state advertisement

A link status notification and link status update technology, applied in the field of communication, can solve problems such as memory exhaustion, and achieve the effect of avoiding memory exhaustion

Active Publication Date: 2011-04-20
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when there is a lot of routing information or there is routing flapping, the main board needs to back up a large amount of routing information to the standby board through board communication. In serious cases, the problem of memory exhaustion may occur due to the backlog of routing information

Method used

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  • Backup method and backup device of link-state advertisement
  • Backup method and backup device of link-state advertisement

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Embodiment Construction

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the embodiments of the present invention.

[0048] The core idea of ​​the present invention is: the main board sends LSA related information to the standby board, and the standby board generates LSA by itself according to the LSA related information sent by the main board.

[0049] For distributed devices, the LSAs on them can be divided into two types: one is the LSAs of other devices, such as the LSAs obtained by the mainboard from received LSU packets;...

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Abstract

The invention discloses a backup method and a backup device of a link-state advertisement. The backup method comprises the following steps of: receiving LSA (Link-State Advertisement) relevant information transmitted by a main plate by a backup plate; and generating the LSA by the backup plate according to the LSA relevant information. In the invention, a backup plate of a distributed type devicegenerates the LSA, and a main plate is not need to backup great amounts of routing information to the backup plate through plate communication, thereby avoiding the problem of memory exhaustion due to more routing information overstocked by the plate communication.

Description

technical field [0001] The invention relates to the communication field, in particular to a backup method and equipment for link state notification. Background technique [0002] OSPF (Open Shortest Path First, Open Shortest Path First) is a link state-based interior gateway protocol developed by IETF (Internet Engineering Task Force, Internet Engineering Task Force). OSPF Version 2 (RFC 2328) is currently used for the IPv4 protocol. OSPFv3 is developed on the basis of OSPF to support IPv6. [0003] The OSPFv3 protocol divides the autonomous system into different areas (Area). Areas logically divide routers into different groups, and each group is identified by an area number (Area ID). Such as figure 1 As shown, the network system is divided into five areas, Area0 to Area4, and Area 0 is called the backbone area. The link state information of OSPFv3 will only be diffused within the scope of the area. Each area will have an independent link state information library, an...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/56H04L45/24H04L45/28
CPCH04L45/28H04L45/22H04L45/04H04L41/0654
Inventor 张长君
Owner NEW H3C TECH CO LTD
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