Network segment crossing N+1 backup method and network segment crossing N+1 backup device

Abstract

The invention provides a network segment crossing N+1 backup method which is used on gateway equipment. The method comprises the steps of receiving, through a configuration interface, gateway subinterface internet protocol (IP) addresses respectively corresponding to N floating IP addresses and static routes corresponding to N floating IP addresses; detecting whether main servers normally send out business messages; setting static routes corresponding to floating IP addresses of main servers which do not normally send out business messages and is judged to be abnormal to be in an ineffective state; detecting whether backup servers start floating IP addresses; setting static routes corresponding to floating IP addresses started by the backup servers to be in a effective state; and releasing outward the static routes of the floating IP addresses started by the backup servers through route protocol messages. The network segment crossing N+1 backup method can effectively solve the problem that network segment crossing N+1 backup can not be realized in the prior art.

Description

technical field [0001] The server service backup technology of the present invention particularly relates to an N+1 backup method and device. Background technique [0002] With the development of the monitoring industry, the scale of the monitoring system is getting larger and larger, and the user's demand for the reliability of the monitoring server is getting higher and higher. Currently, the backup mechanism for servers (such as VM servers) is mainly dual-machine backup or N+1 backup. [0003] Dual-machine backup means that a host (i.e., the main server) and a backup machine (i.e., the backup server) are placed in the same computer room, and share a floating IP address to provide business servers to the outside world. It should be noted that floating IP addresses and dynamic IP addresses are two different concepts. Floating IP addresses can be either fixed or dynamically assigned. When the host is normal, the floating IP address is on the host, and the host provides ext...

AI Technical Summary

Problems solved by technology

However, please refer to figure 1 As shown in the network diagram along the subway line, because the same floating IP address is used, the server VM1 must be on the same layer 2 network as the backup VM. Similarly, the servers VM2, VM3, etc. must be in the same A two-tier network, the existing server N+1 backup solution limits all servers to a two-tier network

If the server is located in a remote location, a three-layer network needs to be crossed in the middle, and the existing N+1 solution cannot be used

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