Switching method and device for automatic protection channel

Abstract

The invention discloses a switching method and a switching device for an automatic protection channel. The method comprises the following steps that: a terminal point of a shared link detects whether a blockage exists in the shared link or not; if the detected result shows that the blockage exists in the shared link, an automatic protection switching channel of a lower priority ring is switched to links among all other nodes except an intermediate node of the protection link in an ether multi-ring network; and if the detected result shows that no blockage exists in the shared link, the automatic protection switching channel of the lower priority ring is switched to the links among all nodes of the lower priority ring. Through the switching method and the switching device for the automatic protection channel, a protocol message of the lower priority ring is selectively transmitted to a high priority ring by switching the automatic protection channel of the lower priority ring, so that the problem of data loss in a process of refreshing a span-ring address when the lower priority rings fail in related technology can be solved, the number of transmitting the protocol message from the lower priority ring to the high priority ring can be reduced, and the network utilization efficiency and the network performance can be improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for switching an automatic protection channel. Background technique [0002] In the actual application of the Ethernet, various protection technologies have been widely used to realize the redundant backup between the active path and the standby path. [0003] Usually, when both the primary path and the backup path are intact, the data forwarding function of the backup path is blocked, and the protected data between networks is transmitted on the primary path; when the primary path fails, the data forwarding function of the backup path is enabled, The protected data between the networks is switched to the backup path for transmission. During this process, the blocking / opening of the link port can prevent the network from repeatedly receiving the protected data in the normal state, and can avoid broadcast storms. The formation of the network; when the main pa...

AI Technical Summary

Problems solved by technology

[0015] The present invention is made in consideration of the problem that the address refresh message cannot be sent to the high-priority ring when the link of the low-priority ring fails in the related art. Therefore, the main purpose of the present invention is to provide an automatic protection channel Switching method and apparatus to solve the above problems

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