Backup method and backup system of central node of star topology network

Abstract

The invention provides a backup method and a backup system of a central node of a star topology network. The method comprises the following steps: sending a self address to a central node by a backup node, and sending the address of the backup node to each edge node by the central node; receiving keep-alive messages regularly and synchronously sent by the central node and recording own latest time for receiving the keep-alive messages by each edge node; regularly inquiring the own latest time for receiving the keep-alive messages and judging whether the time exceeds preset keep-alive period time or not; and if the time exceeds the preset keep-alive period time, switching the communication with the central node to the backup node. When the scheme is applied, because the central node and the backup node are in different host machines, even if the host machine of the central node is broken down, the stability of the whole star system cannot be influenced. In addition, the backup node is not a sub node of the central node, as long as the edge nodes detect out a fault of the central node, the communication can be automatically switched to the backup node. The invention is simpler to realize and greatly reduces the cost.

Description

technical field [0001] The invention relates to network communication technology, in particular to a backup method and system for a central node of a star topology network. Background technique [0002] In the field of network communication, the topological structures formed by the communication between various network devices usually include star topology and mesh topology. figure 1 It is a typical star topology network structure. Such as figure 1 As shown, the star topology includes a central node and several edge nodes. Wherein, each edge node can communicate with other edge nodes, and the central node can be a gateway, responsible for forwarding messages or packets between edge nodes. [0003] It can be seen that the central node in the star topology is very critical, and if the operation is unstable, the entire system will be unstable or unavailable. Therefore, in order to ensure the stability of the system, the prior art proposes the following two methods: [0004...

AI Technical Summary

Problems solved by technology

Although this method can ensure the stability of the central node, its implementation method is very complicated and the implementation cost is relatively high because its backup child nodes are invisible to the edge nodes.

[0006] It can be seen that there is no backup method that can not only ensure the stability of the star topology system, but also reduce the cost in the prior art

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