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Link station information transmission method based on multi-interface route equipment

A link state information and transmission method technology, applied in the field of link state information transmission based on multi-interface routing devices, can solve problems such as network pressure on adjacent routers, optimize the flooding process, reduce CPU pressure, and avoid repeated sending processes Effect

Inactive Publication Date: 2008-04-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the flooding stage, it will also put great pressure on the CPU and network of adjacent routers.

Method used

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  • Link station information transmission method based on multi-interface route equipment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050] Example 1. The implementation process of forming the first adjacency relationship between routing device 1 and routing device 2.

[0051] During the process of forming the first adjacency between routing device 1 and routing device 2, routing device 1 checks whether there is an established Since the new adjacency is the first adjacency, routing device 1 determines that there is no established adjacency. In this way, routing device 1 will carry the DD (database description) with complete link state confirmation information The packet is sent to routing device two.

[0052] After the first FULL adjacency relationship is formed between routing device 1 and routing device 2, the formation process of other new adjacency relationships is as described in Example 2 and Example 3 below.

[0053] For the convenience of description, the first adjacency that is being formed or has been formed between routing device 1 and routing device 2 is called the primary adjacency, and the ad...

example 2

[0054] Example 2. When routing device 1 and routing device 2 have a FULL adjacency relationship of the same neighbor in the same area, the implementation process of forming a secondary adjacency relationship between routing device 1 and routing device 2 is as follows:

[0055] In the process of forming a secondary adjacency relationship between routing device 1 and routing device 2, after the secondary adjacency relationship enters the 2-Way state, routing device 1 detects whether there is a same neighbor in the same area between it and routing device 2 FULL adjacency. Since the adjacency being formed is a secondary adjacency, that is, there is a FULL adjacency between routing device 1 and routing device 2, routing device 1 determines that there is a FULL adjacency in the same area, and thus routing device 1 will carry the The DD message of the link state confirmation information within the link range where the adjacency relationship is being formed is sent to the routing devi...

example 3

[0056] Example 3. When routing device 1 and routing device 2 have FULL adjacencies in different areas of the same neighbor, the implementation process of forming a secondary adjacency relationship between routing device 1 and routing device 2 is as follows:

[0057] In the process of forming a secondary adjacency relationship between routing device 1 and routing device 2, after the secondary adjacency relationship enters the 2-Way state, routing device 1 detects whether there is a FULL in a different area of ​​the same neighbor between it and routing device 2 adjacency. Since the adjacency that is being formed is a secondary adjacency, that is, there is a FULL adjacency between routing device 1 and routing device 2, routing device 1 determines that there is a FULL adjacency in a different area of ​​the same neighbor. In this way, routing device 1 Send the DD packet carrying the link state confirmation information within the area where the secondary adjacency relationship is be...

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Abstract

This invention provides a link state information transmission method based on a multi-interface route device including: when a first route device sends link state information to a second route device, it tests the sent instruction information and determines the actually needed information and sends it to the second route device, in this invention, a route device can decide if the sent link state information contains repeated information so that the information necessary to be sent actually contains the information un-repeated and should be transmitted so as to avoid repeated transmission of link state information.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for transmitting link state information based on a multi-interface routing device. Background technique [0002] OSPF (Open Shortest Path First, Open Shortest Path Routing Protocol) is a link-state IGP (Interior Gateway Protocol, interior routing protocol). [0003] Many large networks have multiple interfaces, that is, multiple links, between routers. If the OSPF protocol is run in this environment, the router will directly send a large number of repeated LSA (Link State Acknowledgment, Link State Acknowledgment) messages to the peer router through multiple interfaces during the adjacency formation phase, so that the peer router will A large number of LSA messages with the same content transmitted from the same peer router will be received. A large number of LSA messages will cause great pressure on the CPU in the router. At the same time, a large number...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/00
Inventor 尼廷克凯乐司瑞尼
Owner HUAWEI TECH CO LTD