Routing updating method and system and router

Abstract

The invention discloses a routing updating method, a routing updating system and a router. The routing updating method comprises the following steps that: a first router receivers the link state information of a second router, deletes the routing of the second router when the link state information is damaged and generates and floods a purge message, wherein the purge message carries the information of the first router; and the second router receives the purge message, generates new link state information and floods the new link state information when the second router is normal. In the routing updating method, the routing updating system and the router, router information for generating the purge message is added into the purge message, so that other routers in a network can position a router which generates the purge message according to the purge message, the router is isolated, routing vibration is eliminated, a fault source is eliminated and network stability is recovered.

Description

technical field [0001] The invention relates to a network technology, in particular to a route updating method, system and router. Background technique [0002] IP network is the main bearer network of operators, and more and more service data needs to rely on IP networks all over the place to provide transmission channels. The ISIS routing protocol is widely used as an IGP routing protocol by large IP networks due to its strong scalability and fast convergence speed. The ISIS protocol is a link state routing protocol, which realizes the announcement of the entire network route by flooding the link state (LSP). Considering the abnormality in the network, including the abnormality of the router that generates the LSP message and the abnormality of the flooding path, it may cause damage to the LSP. Therefore, the ISIS protocol requires each router to Perform a checksum check. The router that checks the correct LSP will receive it and flood it to its neighbors. For the LSP t...

AI Technical Summary

Problems solved by technology

Although the existing circumvention measures have avoided the routing shock of the whole network, there are two problems: (1) when the source router is abnormal, a damaged LSP is generated, and if other routers do not process or delete the route, the The transmission of data by the source router will lead to data failure; (2) When the source router is normal, a damaged LSP message indicates that there is a problem with the path in the network. If the route is not deleted, it will not be able to correctly reflect the current situation of the network. It may have an impact on the transmitted business, and the source of the fault cannot be reflected and resolved in time

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