Method, device and system for detecting misconnection of optical fibers

Abstract

The embodiment of the invention provides a method, device and system for detecting misconnection of optical fibers, relating to the technical field of optical communication, and ensuring that personnel can timely find the misconnection of the optical fibers and perform adjustment to improve reliability of a network. The method for detecting misconnection of the optical fibers comprises the following steps of: constructing a physical layer fault in a transmitting direction of an idle channel of a home terminal, and ensuring an opposite terminal to detect the fault, wherein a channel receiving no data in a working channel and a protection channel of the home terminal is the idle channel; and if a port of the home terminal, which is used for receiving K byte fault information and multiplex section remote defect indication which are transmitted by the opposite terminal, is different from the port used for receiving the K byte fault information and the multiplex section remote defect indication during correct connection, the working channel and the protection channel are misconnected. The method for detecting the misconnection of the optical fibers comprises the steps of detecting the physical layer fault in the transmitting direction of the idle channel of the opposite terminal and transmitting the multiplex section remote defect indication in a channel where the physical layer fault is detected by the home terminal and sending the K byte fault information on the protection channel by the home terminal at the same time.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a method, device and system for detecting optical fiber misconnection. Background technique [0002] In optical network technologies such as Synchronous Digital Hierarchy (SDH) and Synchronous Optical Network (Synchronous Optical Network, SONET), the Multiplex Section Protection (MSP) protocol is a protocol used to provide transmission links Protocol for redundant backup. [0003] The MSP protocol defines the transmission link as a working channel and a protection channel. Under normal conditions, data is transmitted on the working channel. When the working channel fails, the MSP protocol automatically switches the data transmission to the protection channel, thus avoiding business interruption. interruption. [0004] In the MSP protocol, K bytes are a piece of data specially used to transmit fault information, working channel and protection channel transmission s...

AI Technical Summary

Problems solved by technology

[0005] In the actual application of the MSP protocol, due to various reasons, optical fiber misconnection often occurs. For example, the sending end of the protection channel at the opposite end is misconnected with the receiving end When a fault occurs, the K-byte information of the opposite end will be sent to the receiving end of the working channel of the local end through the sending end of the protection channel. Since in the MSP protocol, K-byte information is not sent on the working channel, the receiving end of the working channel of the local end The end device will ignore this information, so that the local end cannot know the fault information, and then the switching of the transmission channel cannot be completed.

Since the data link can still continue to transmit data in this way of misconnection, we cannot know whether the optical fiber is misconnected. However, once a failure occurs on the transmission link, the redundant backup in the transmission link will not be able to be performed. , causing the entire transmission service to be interrupted

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