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Method, system and device for advertising adjacent network domain of DS-TE information

An adjacent network, DS-TE technology, applied in the field of communication applications, can solve problems such as network congestion

Inactive Publication Date: 2009-09-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing internal gateway routing protocols (Internal Gateway Protocol, IGP) do not take factors such as bandwidth availability and service characteristics into consideration when establishing forwarding tables, which may cause network congestion in some cases. At this time, it is necessary to Traffic Engineering to Solve Problems

Method used

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  • Method, system and device for advertising adjacent network domain of DS-TE information
  • Method, system and device for advertising adjacent network domain of DS-TE information
  • Method, system and device for advertising adjacent network domain of DS-TE information

Examples

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Embodiment Construction

[0039] Embodiments of the present invention provide a method, system and equipment for notifying DS-TE information of adjacent network domains. Obtain the DS-TE information of the adjacent network domain through the border routing device, and flood the DS-TE information of the adjacent network domain in the network domain where the border routing device is located by extending Open Shortest Path First (OSPF).

[0040] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] See first figure 1 , figure 1 It shows a network system diagram for notifying adjacent network domain DS-TE information in the implementation of the present invention. The network system is divided into different network domains according to different requirements, and the network domains are autonomous domains or areas. The figure shows Network domain one, network domain two and network domain three, wherein: network domain one include...

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Abstract

The embodiment of the invention discloses a method for advertising an adjacent network domain of DS-TE information, which comprises the steps of detecting whether the DS-TE information of a network domain and the adjacent network domain changes or not and carrying out advertisement in the network domain by link-state advertisement (LSA) when detecting that the DS-TE information of the network domain and the adjacent network domain changes. The embodiment of the invention also discloses a system and a device for advertising the adjacent network domain of the DS-TE information. By the method, the system and the device for advertising the adjacent network domain of the DS-TE information, an ingress label switching router (ingress LSR) or a path calculating element (PCE) can learn about the DS-TE information of the adjacent network domain.

Description

technical field [0001] The present invention relates to a communication application field, in particular to a method, system and equipment for notifying adjacent network domain DS-TE information. Background technique [0002] The task of mapping traffic flows onto the physical topology of the network is known as traffic engineering. Most of the existing internal gateway routing protocols (Internal Gateway Protocol, IGP) do not take factors such as bandwidth availability and service characteristics into consideration when establishing forwarding tables, which may cause network congestion in some cases. At this time, it is necessary to Traffic engineering to solve the problem. Traffic engineering is a powerful tool by which traffic can be balanced across the different links, routing devices, and switches in a network so that all of these devices are neither overused nor underutilized. In this way, the resources of the entire network can be effectively utilized, and traffic e...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/24H04L12/56H04L29/06
CPCH04L45/04H04L47/24H04L47/10H04L45/00H04L45/02H04L45/03
Inventor 刘淑英郭娟
Owner HUAWEI TECH CO LTD
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