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Traffic switching method, equipment and system

A technology of traffic switching and equipment, applied in the field of communication, can solve the problems of not being able to influence, not be able to publish the external border gateway protocol, difficult to deploy, etc., and achieve the effect of avoiding traffic loss

Inactive Publication Date: 2015-03-18
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, in this way, the application is limited when cross-domain, because MED can only affect the autonomous system boundary router node of the peer domain in the inter-domain, and cannot affect the domain, and the LOCAL_PREF attribute cannot be published to the external border gateway protocol.
Moreover, when changing these two attributes, it is necessary to ensure that the route selection on the end-to-end device is correct and does not interfere with the route selection of other services, which is difficult to deploy.

Method used

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  • Traffic switching method, equipment and system
  • Traffic switching method, equipment and system
  • Traffic switching method, equipment and system

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only part of the embodiments of the application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0028] by figure 1 The network shown is taken as an example, the service runs between the network nodes R1 and R6, and the intermediate service can pass through the autonomous system (AS) 100 or AS200, wherein, the AS100 includes the network nodes R2 and R4, and the AS200 includes the network nodes R3 and R5. By default, service traffic passes through AS 100 with a smaller metric value. When faults in the domain of AS100 are detected, such as tunnel bit errors...

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Abstract

The invention discloses a traffic switching method, equipment and a system. The traffic switching method comprises the steps of changing accumulated interior gateway protocol metric of a first link according to a preset strategy when transmission quality of the first link changes; switching the traffic of the first link to the traffic of a second link, wherein the accumulated interior gateway protocol metric of the second link is less than the changed accumulated interior gateway protocol metric of the first link. The method can perform dynamic adjustment on business path priority in a network with multiple domains so as to realize dynamic traffic switching.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a flow switching method, device and system. Background technique [0002] With the rapid development of network technology, various new services such as video sharing and Internet Protocol Television (IPTV) continue to emerge, and network traffic will maintain an exponential growth trend for a long time. [0003] In an actual network, there are often end-to-end services across multiple domains. When a fault occurs in one of these domains, such as tunnel error, link flashing, bandwidth overrun, etc., the transmission quality will be affected. In the case of a decline, the service needs to be switched to the normal link of the tunnel. [0004] At present, generally by modifying Border Gateway Protocol (BGP) attributes such as local preference attributes / routing weight attributes (LOCAL_PREF / MED), policy adjustments are made to adjust the priorities of BGP routes in ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/801
Inventor 董佳未肖亚群
Owner HUAWEI TECH CO LTD
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