Method and apparatus for updating router

Abstract

The invention discloses a method for updating router, comprising: a master control module detects and obtains IS-IS data, generates a router table according to the obtained IS-IS data, and creates a forwarding table in an interface module according to the generated router table; the master control module sends the router prefix information recorded by each router in the obtained IS-IS data and generated router table to a spare control module to be backed up; and if the master control module goes wrong, the spare control module modifies the backed-up IS-IS data according to network condition, generates a router table according to the modified IS-IS data and updates the forwarding table recorded by the interface module according to the backed-up router prefix information and generated router table. In the method, the interrupt of forwarding flow rate in the prior art which can only delete black hole router in ageing time is avoided, and the network flow rate forwarding performance of dual-control module devices is improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for routing update. Background technique [0002] With the continuous development of network services, many operators expect the traffic interruption time caused by equipment failures in the network to be controlled within 50 ms or even lower. In order to realize that when a certain device in the network fails, the network traffic forwarded by the device is interrupted as little as possible or even not interrupted, the NSR (Non-Stop Routing, non-stop routing) technical solution is adopted in the prior art, and the main idea of ​​the solution is A dual control module device including an interface module and two control modules is proposed. The control module is responsible for maintaining the forwarding table recorded by the interface module, and the interface module routes network traffic according to the recorded forwarding table. [0003] ...

AI Technical Summary

Problems solved by technology

However, the standby control module cannot delete the routes that existed before the standby control module takes over and have not been calculated after the standby control module takes over from the forwarding table of the interface module. These routing records in the forwarding table can only be deleted after the automatic aging time expires. to clear

As a result, the routes to be deleted in the forwarding table during the automatic aging time become black hole routes, causing the forwarding network traffic to be interrupted within a certain period of time.

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