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Neighbourhood establishing method and router

A method of establishing a neighbor relationship, a technology applied in the field of communication, which can solve the problem of long time for establishing a neighbor relationship

Inactive Publication Date: 2008-02-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The embodiment of the present invention aims to provide a router in an OSPF protocol system and a method for establishing a neighbor relationship thereof, so as to solve the problem in the prior art that it takes a long time to establish a neighbor relationship

Method used

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  • Neighbourhood establishing method and router
  • Neighbourhood establishing method and router
  • Neighbourhood establishing method and router

Examples

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Embodiment Construction

[0022] Hereinafter, the present invention will be described in detail with reference to the drawings and the embodiments.

[0023] Fig. 3 shows a flowchart of a method for establishing a neighbor relationship according to an embodiment of the present invention, including:

[0024] Step S10, the router that has been switched or restarted sends the first HELLO message, and receives the HELLO message from the neighboring router;

[0025] Step S20, after receiving the HELLO message, determine whether the DR identifier or the BDR identifier attached to the content of the HELLO message is the same as the local identifier, and whether the current interface receiving the HELLO message is in the WAITING state; and

[0026] In step S30, if the identifier of the router is different from the local identifier and the current interface receiving the HELLO message is in the WAITING state, DR election is performed to establish neighbor relationships with other routers.

[0027] In this embodiment...

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Abstract

The present invention provides a method of building relation with the neighborhood, comprising the follows: sending the first HELLO message and receiving the response HELLO message from the neighboring router; after receiving the HELLO message, estimating whether the DR identification or BDR identification taken by the content of the HELLO message is the local identification or not, and estimating whether the current interface receiving the HELLO message is at the WAITING state or not; in case the identification of the router is different from the local identification and the he current interface receiving the HELLO message is at the WAITING state, undertaking the DR voting. Furthermore, the present invention provides a router for the OSPF protocol system. The present invention can quickly build the neighboring relation with the neighboring router, shortening the service breaking time.

Description

Technical field [0001] The present invention relates to the field of communication, and more specifically, to a router and a method for establishing a neighbor relationship. Background technique [0002] OSPF (Open Shortest Path First) protocol is a widely used dynamic routing protocol. [0003] In this protocol, the neighbor relationship is established between routers, and then the link state description information is exchanged to obtain the information of other routers, and thus generate routing information. [0004] In broadcast and NBMA (non-broadcast multi-access, non-broadcast multi-access) type networks, the OSPF protocol stipulates to reduce the number of reports by electing DR (Designated Router) and BDR (Backup Designated Router). Text interaction. Routers on the same network segment only establish neighbor relationships with DR and BDR routers, and exchange link state description information. The exchange of link state description information between the router and th...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/28H04L45/60
Inventor 史德伟
Owner HUAWEI TECH CO LTD
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