Method, system and device for maintaining routes

Abstract

A method, system, and device for maintaining routes are provided. A communications network includes multiple point of presence (PoP) groups, where each of the PoP groups includes one or more PoP nodes. PoP nodes within the same PoP group issue routing information of the same super prefix. PoP nodes within different PoP groups issue routing information of different super prefixes. The method further includes the following steps. A PoP node acquires routing information of a detailed prefix covered by a super prefix issued by the PoP node and synchronizes the routing information of the detailed prefix with other PoP nodes within the same PoP group. The method, system, and device reduce flow of data forwarded by each PoP node.

Description

FIELD OF THE TECHNOLOGY[0001]The present invention relates to a technology for transmitting data in a communications network, and more particularly to a method, system, and device for maintaining routes.BACKGROUND OF THE INVENTION[0002]A route is used for transmitting data from source terminal equipment in a communications network to destination terminal equipment through a router. When data packets are transmitted, the router needs to select an optimal path and switch the data packets in the route maintained by the router. Metric is a calculation standard for determining the optimal path to reach the destination terminal equipment in a route algorithm. For example, in the standard, the optimal path can be determined with the shortest path or the smallest path overhead. In order to enable the router to select the path after the data packets are received, route initialization needs to be performed and a routing table including path information in the communications network needs to b...

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Benefits of technology

[0039]Compared with the prior art, the embodiments of the present invention have the following advantages. With the method, system, and device provided according to the embodiments of the present invention, multiple PoP groups are set in a transmission network, one or more PoP nodes are set within each PoP group, and PoP nodes within the same PoP group issue routing information of the same super prefix, respectively. The PoP nodes within different PoP groups i

Problems solved by technology

On the one hand, in a router a larger capacity storage routing table needs to be set, which results in cost increase.

On the other hand, due to the large number of routes maintained by the router, route convergence of the router becomes slow, that is, a rate of route processing on data becomes slow, which results in that a reaction rate of data transmission of the communications n

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