Method for realizing PVC group backup in PVC group communication network

Abstract

The invention relates to a method for realizing PVC group backup in a communication network. The method is: when the main PVC (Permanent Virtual Circuit) group is established between the two devices, regularly detect whether the status of the multiple PVCs included in it is invalid, and when the number of invalid PVCs reaches the set threshold value, it is considered that The PVC group has failed. Therefore, on this device, the configured standby PVC group takes over from the original primary PVC group path for data transmission, ensuring reliable data transmission on the PVC. Therefore, the present invention realizes a simple and efficient PVC group backup method, and this switching action is transparent to the source end of the PVC group, that is, it is a stand-alone switching action. Moreover, the present invention only occupies few equipment resources during the implementation process, which greatly facilitates the construction and maintenance of the edge network.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for realizing PVC (Permanent Virtual Circuit) group backup in a communication network. Background technique [0002] At present, in the communication network, data transmission is usually based on FR (Frame Relay) technology and ATM (Asynchronous Transfer Mode) technology. Both of these two technologies establish a connection-oriented network through the established PVC, and FR technology Both ATM and ATM technology adopt the protocol of statistical multiplexing, so that multiple virtual circuits, that is, multiple PVCs, can be provided on a single physical transmission line. During data transmission, different PVCs are exchanged to different destinations through intermediate exchange processing. [0003] Since PVC is a connection-oriented technology, PVC is usually a virtual path that is pre-established manually. At the same time, PVC needs to detect whet...

AI Technical Summary

Problems solved by technology

However, the implementation of SVC technology is very complicated. This technology is based on a complete set of signaling protocols. If this technology is used in the communication network to realize PVC backup, it is required that the intermediate switches and terminal devices in the communication network must have the ability to establish SVC. function, so as to ensure that when a certain PVC is interrupted and a corresponding SVC needs to be established, both the intermediate switch and the terminal equipment need to start the function of establishing the SVC and establish the corresponding SVC, so that the data transmitted on the interrupted PVC can be switched to the new one. Transmission continues on SVC

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