Protection method for service transmission and network appliance

Abstract

The embodiment of the invention discloses a protecting method for service transmission, comprising the following steps: alarm indication signals containing protective indicating identification is obtained and the protective indicating identification shows the protective state of a channel; the protective state of the channel in which faults occur is determined according to the obtained protectiveindicating identification; and if the protective state of the channel is determined to be that protection is not available, protection switching is carried out. The embodiment of the invention provides network equipment, which comprises an obtaining unit, an identification unit and a first processing unit; the obtaining unit is used for obtaining alarm indication signals containing protective indicating identification and the protective indicating identification shows the protective state of a channel; the identification unit is used for determining the protective state of the channel in which faults occur according to the obtained protective indicating identification; and the first processing unit is used for carrying out protection switching when the identification unit determines that the protective state of the channel is no available protection. The technical proposal of the embodiment of the invention can reduce service loss in the protection switching.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a service transmission protection method and network equipment. Background technique [0002] In a complex transport network, in order to provide more reliable protection for the transmission of important services, a nested protection structure can be used to protect the same service transmission at different network layers, such as figure 1 As shown, the section from end node NE1 to end node NE5 belongs to the client layer protection section, and the section from end node NE2 to NE3 belongs to the service layer protection section. The solid line indicates the working channel, and the dotted line indicates the protection channel (only one direction is drawn in the figure) , for two-way protection, the other direction is the same). A series protection structure can also be used, such as figure 2 As shown, there are three protection sections belonging to the same layer: p...

AI Technical Summary

Problems solved by technology

[0006] The end nodes of the protection section cannot recognize the alarm indication signal (AIS) caused by the failure of different locations, so in any case, the protection switching delay operation is performed, but in fact some protection sections need to be switched immediately, and they are still executed at this time Protection switching delays time operation, which brings unnecessary business loss

Images