Synchronous switching method for host and repeat device

Abstract

The present invention discloses host computer and retransmission unit synchronous switching method, wherein two or more retransmission unit composing retransmission unit set and generating host equipment and spare equipment, each retransmission unit in retransmission unit set respectively connected with host computer and providing service to host computer through host equipment. Said method also includes A, each retransmission unit in retransmission unit respectively notifying oneself current host standby state to host computer; B, host computer according to each retransmission unit notified host standby state to determine host equipment in retransmission unit set, and switching host equipment connected port as host port, through host port re-establishing connection with host equipment. The present invention reduces retransmission message jump number, system time delay, band width, system resources, and interconnection cost through direct connection between host computer and host equipment.

Description

technical field [0001] The invention relates to master-standby switching technology, in particular to a method for synchronous switching of a host and forwarding equipment. Background technique [0002] With the development of Internet (Internet) technology, a large number of hosts need to be reliably connected to NGN, Internet network or private network through forwarding equipment. Wherein, the host is usually some important network devices, such as a server providing WEB service or FTP service, or a soft switch device. The forwarding device is: a gateway, a layer-3 switch or a router. Here, the forwarding device uses a gateway as an example for description. Usually, the host must be connected to the Internet or a private network through a gateway. Once the gateway that provides services for the host fails, the connection between the host and the Internet or the private network will be interrupted, so that users who rely on the host to provide services cannot obtain Inte...

AI Technical Summary

Problems solved by technology

[0005] When a new primary gateway is generated, the newly generated primary gateway will send a free Address Resolution Protocol (ARP, Address Resolution Protocol) message to the host. Although the host can receive the free ARP message sent by the new primary gateway, the free The ARP message does not carry the information prompting the host to switch the active and standby ports, so the host will not switch the standby port connected to the new active gateway as the active port, so the host will still connect to the original active gateway The port sends a message to the newly created active device

Therefore, in the process of making the host send messages through the forwarding device group, the number of message forwarding hops and system delay are increased, and the bandwidth between gateways in the forwarding device group is occupied, which increases the interconnection cost between gateways , wasting system resources

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