A method for multi-port multi-link communication network backup control and apparatus therefor

Abstract

The invention discloses a kind of multi-port and multi-chain communication network backup control method, which is applied to the dual-port primary backup, each port has two transmitting and receiving models, the network loop has a primary port and three backup ports, in the exchanging network which is connected crossly, the primary port and the backup port at the same side are the fellow ports each other, each port has two transmitting and receiving models, which are connected to one port of the opposite port through a single chain, each receiving and transmitting model can carries on transmitting and receiving of group package, each port selects data received by a receiving and transmitting model; in switch, the active inverse the port, the passive side switches the receiving and transmitting model, the two ports can witch the models circularly. After receiving the detecting package of the opposite one, it controls the port enter the fixed mode, the invention can upgrades the reliability of the network and it can switch to the backup network when the network has failure.

Description

technical field [0001] The invention relates to the field of communication, in particular to a communication network backup device and a control method thereof. Background technique [0002] In the communication system, the status of the communication network is extremely important. It must be able to run stably for a long time, and it is required to be able to recover quickly, safely and reliably when the communication network equipment or link fails. Therefore, the communication network backup mechanism is indispensable. [0003] Currently, there are two main communication network backup methods: 1) Port 1+1 active / standby, multiplexing the same communication link; 2) Port 1+1 active / standby, link corresponding to 1+1 active / standby. In these two methods, one port is only connected to one network link. If the backup port at one end fails, the link cannot be switched to the backup port, that is, the function of the backup link will no longer be effective, and the network ...

AI Technical Summary

Problems solved by technology

If the backup port at one end fails, the link cannot be switched to the backup port, that is, the function of the backup link will no longer be effective, and the network cannot be backed up. If there is a network abnormality, the communication will be interrupted

The second backup method has only one backup link. If the backup link fails, the network backup function will also be lost.

In this way, it increases the risk that one end switches to the backup while the other end has not switched, resulting in network failure.

Moreover, it will increase the time for network link switching

[0005] Publication No. 1321004, in the Chinese invention patent titled "Master-Standby Switching Method of Switches and Its Implementing Device", proposes a master-standby switchover method for switches, but does not involve the backup method of the network, and the master-standby switchover time , link switching is required, affecting speed and reliability

[0006] In the U.S. invention patent "Backup gateway apparatus and home network system" (Backup gateway apparatus and home network system) with the publication number 20020178398, a method for network system backup is proposed, but it uses a parallel network link backup method. When the main network When a link fails, both ends need to negotiate a consensus and switch network devices at the same time, which also affects speed and reliability

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