Method, system and router realizing elegant restart of route information protocol

An elegant restart, router technology, applied in the field of communications, can solve the problem of not updating the route, restarting the router to interfere with the network, unable to update the route in time and accurately, and achieve the effect of accurate route update and reducing interference.

Active Publication Date: 2009-04-01
北京知方知识产权管理有限公司
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Problems solved by technology

[0010] Moreover, because RIP restarts the trigger update of the router within the restart time is suppressed, that is, before the routing table is synchronized, it does not send any routing updates, which may cause the RIP neighbor routers connected to it to fail to update the route for a long time due t

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  • Method, system and router realizing elegant restart of route information protocol
  • Method, system and router realizing elegant restart of route information protocol
  • Method, system and router realizing elegant restart of route information protocol

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0035] The method provided by the embodiment of the present invention is: the router discovers the RIP neighbor router connected thereto, and sends a restart notification message to the RIP neighbor router; receives RIP routing information from the RIP neighbor router; and receives the routing update from the RIP neighbor router After the notification message is completed, the forwarding table is updated according to the RIP routing information.

[0036] In the embodiment of the present invention, a clear restart signaling mechanism is adopted to realize graceful restart of the router. The method provided by the embodiment of the present invention is mainly divided into the following three stages:

[0037] Neighbor discovery phase: The router restarts....

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Abstract

The embodiment of the invention discloses a method that a routing information protocol realizes graceful restart. The method comprises that: a router discovers a neighbor router which is connected with the router, and sends a restart notice message to the neighbor router; routing information is received by the neighbor router; after receiving a routing updating completion notice message from the neighbor router, the router updates a forwarding table according to the routing information. The embodiment of the invention discloses the method that the routing information protocol realizes the graceful restart. The method comprises: the restart notice message from a restart router is received, the routing information is sent to the restart router, and the routing updating completion notice message is sent to the restart router after all the routing information is sent out. The embodiment also discloses two routers. Applying the invention, routing updating can be accurately carried out in time, and the interference of the restart router to the network is reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a router for realizing a graceful restart (GR, Gracefull Restart) of a Routing Information Protocol (RIP, Routing Information Protocol). Background technique [0002] Router restart refers to the process of restarting and returning to the normal working state when the router fails to work normally. Router restart includes re-learning routes and re-updating the routing table according to the routing protocol. Many routing protocols support the router GR mechanism with high reliability. Specifically, when a router is scheduled to restart or unexpectedly restarts, the routing protocol supports the restarted router (hereinafter referred to as the restart router) to communicate with the neighbor router (hereinafter referred to as the helper router) that provides routing information. router) for routing synchronization, that is, the helping router sends routing information to the...

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Application Information

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IPC IPC(8): H04L29/06H04L12/56H04L1/16
Inventor 撒偌瓦纳·库默
Owner 北京知方知识产权管理有限公司
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