Reverse treatment method and device

Abstract

The embodiment of the invention relates to a reverse treatment method and a device. The method comprises: a local node receives automatic protection reverse information; user-defined expenditure information representing far-end path state is packaged in the automatic protection reverse information; after a forced reverse clearing order is received, the connection state of a reversing switch and a gapping switch is controlled by the local path state and the far-end path state. The device comprises a receiving module and a reverse controlling module. Under the condition that the embodiment of the invention immediately sends out the forced reverse clearing order to clear the current forced reverse state due to single-end invalidation of a transmission path, the connection state of the reversing switch and the gapping switch is determined according to the state information of the transmission path, thus realizing the smooth switching of reverse and prevents business transmission from instantly interrupting.

Description

technical field [0001] Embodiments of the present invention relate to the field of optical fiber communication, and in particular, to a switching processing method and device. Background technique [0002] In the optical fiber communication network, for the four-fiber ring protection mechanism, according to the actual fault status of the working channel and the protection channel, the mechanism of section protection and ring protection can be selected respectively. The following takes a four-fiber ring scenario consisting of four nodes as an example to introduce the four-fiber ring protection mechanism. [0003] like figure 1 As shown, it is a network topology diagram of a failure of a single-ended working channel, wherein the solid line indicates the working channel, and the dotted line indicates the protection channel. When the working channel 13 between node 11 and node 12 fails, the section protection mechanism is selected at this time. That is, the protection channel ...

AI Technical Summary

Problems solved by technology

[0006] The section protection mechanism of the prior art has the following defects: in the case of single-end failure of the working channel, node 11 cannot know the fault status of the remote working channel 13 after the node 11 sends the FS-CLR command through the management interface , so the switching switch is restored to the working channel, triggering a second switching, which causes the problem of unnecessary instantaneous interruption of business flow

[0008] The above prior art ring protection mechanism has the following defects: after the node 21 issues the FS-CLR command, the node 21 judges that the protection channel 26 is faulty through the SF-P message received on the short path, but cannot know the working channel 25 fault state, so the switching switch and the bridging switch are connected to the working channel 25, while the switching switch on the node 22 is still connected to the protection channel 26 at this time, causing the interruption of the service flow transmission from the node 21 to the node 22; until the node 22 is triggered again Only when the SF-R switchover is successful can the service stream transmission return to normal

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