Automatic link switching method and automatic link switching device

Abstract

The invention relates to the technical field of communication, and especially relates to an automatic link switching method and an automatic link switching device in order to solve the problem in the prior art that when a port, connected with transmission equipment, of switching equipment has electrical signals but part of a link fails, the switching equipment cannot detect the failure of a main link, so that automatic link switching cannot be realized, the failure time of a long-distance transmission system is prolonged, and the stability of the system is poor. According to the invention, when that a main transmission port does not receive a detection data frame is detected by using M continuous cycles, that a main link fails is determined, the main link is closed, and a standby link is enabled. The situation in which switching equipment cannot automatically identify that transmission equipment has electrical signals but the link is abnormal in the prior art is avoided, the failure time of the long-distance transmission system is shortened, and the reliability of the long-distance transmission system is improved. Meanwhile, the state of a link is determined by multiple detection cycles, and the probability that link fault is judged by mistaken due to delay in detection data frame receiving by a transmission port is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for automatic link switching. Background technique [0002] With the continuous increase in the number of mobile users and the continuous update of user needs, the construction scale of the communication system is getting larger and larger, and each component in the system cannot be placed in the same physical location in the computer room. However, due to business requirements, the IP address of the entire system needs to be in the same network segment, so remote devices are usually connected to the system through long-distance transmission lines. In the process of long-distance transmission, in order to ensure the reliability of the transmission system, the "dual uplink" technology is usually used, that is, the main and standby two network cables are set on the switching device to connect to the peer device, and the switching device is connected to th...

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a method and device for automatic link switching to solve the problem that in the prior art, when the transmission port of the switching device has electrical signals, but some active links fail, or the peer switching device fails, the switching device cannot Even if a failure of the active link is detected, the link cannot be switched automatically, resulting in prolonged failure time of the long-distance transmission system and poor system stability.

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