Protection method and system, node device

Abstract

The invention discloses a protection method and system, node device. The method comprises: searching a protection channel group for a working channel by a first node device according to a mapping relation between the working channel and a protection channel when a first node device detects that the working channel of a working channel group breaks down; bridging the protection channel in the protection channel group searched by the first node device with the working channel in the working channel group by a second node device; and the first node device switches in a whole the transaction sent on the working channel in the working channel group to the bridged protection channel for transmission. According to the protection technology, the working channel and protection channel between the first node device and the second node device are grouped such that when the working channel breaks down and needs overall replacement, the protection channel corresponded with the working channel can be rapidly found to perfume the transaction replacement, which can improve the channel replacement frequency and be favor of normal transmission.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a channel group protection method, node equipment and a channel group protection system. Background technique [0002] Protection switching is a survivability technology, and the survivability technology is a technology to improve the reliability performance of the network by providing the ability to recover services from service interruptions. This technology can be applied to all places where services are provided, and for communication networks, providing protection switching is a necessary function. [0003] Protection switching is widely used in communication networks. For example, SDH (Synchronous Digital Hierarchy) or SONET (Synchronous Optical Networking) provide 1+1 protection, 1:N protection, two-fiber ring / four-fiber ring multiplex section protection, SNCP (Sub -network Connection Protection, subnet connection protection) protection and DNI (Dual-node ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the embodiments of the present invention is to provide a channel group protection method, node equipment and system, which can effectively ensure highly correlated working channels, in view of the fact that the individual switching modes in the prior art cannot meet the needs of service switching When the group fails, it can be switched to the qualified protection channel group at the same time, which can also improve the efficiency of channel group switching and save the time of channel switching

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