A multi-broadcast communication method and device for automatic protection switching

Abstract

The invention relates to a multicast communication method and a device thereof capable of realizing automatic protective switching used in a circulator optical communication network. Network management software assigns an IP address for each multicast group. Each node's automatic protective switching controller is activated and then automatically added into the multicast group. Each node's route controller is activated and then assigns a route for the multicast groups' IP address. When an automatic protective switching controller receives a fault warning and needs to send out an automatic protective switching request, the long track signaling will be packaged into a multicast IP packet and send out the survival time field of the message to the long track signaling multicast IP packet. Thecontroller will also package the short track signaling growth into the multicast IP packet and set the survival time field as the number of the circulator network nodes and the number is sent out to the short track signal multicast IP packet in the long track. The invention controls the time order of the signal receiving in the network, improves the reliability of the automatic protective switching and enhances the network configuration automation degree without artificial mode to configuring the multicast routes.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a multicast IP communication method and device for realizing automatic protection switching. Background technique [0002] The current optical transport network has higher and higher requirements for network survivability. Network survivability refers to the ability of the network to maintain service continuity in the event of a network failure. APS (Automatic Protection Switching) is an important means to realize the survivability of the optical network. [0003] For the ring network, the commonly used protection types include multiplex section ring sharing protection and path ring sharing protection. The main feature of the ring network protection protocol is to use long-path signaling and short-path signaling to realize the response of the protocol. The so-called long path (Long Path) refers to another section of path away from the section where the switching request is...

AI Technical Summary

Problems solved by technology

[0007] The current multicast communication method applied to automatic protection switching has defects: other nodes on the ring network receive the switching requests almost at the same time, instead of receiving them sequentially, and the timing of processing switching requests by other nodes on the ring network cannot be guaranteed. In the complex situation of fault combination, the protection switching may fail; in addition, the current multicast communication method requires a lot of network management configuration, which is very inconvenient to use

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