Master/standby signal switching method and device thereof

Abstract

The invention discloses a master / standby signal switching method which comprises the following steps: detecting an indication signal sent by a first module and an indication signal sent by a second module; and when the indication signal sent by the first module and the indication signal sent by the second module both indicates standby status, changing the indication status of the indication signalsent by the second module to master status. The embodiment of the invention also provides a corresponding device. The embodiment of the invention uses level signals sent by the master / standby real-time detection modules, changes the level signal of one of the modules into a low-level signal in master status when the signals both indicate the standby status, and guarantees that at least one moduleis in the master status, thus leading the service not to be interrupted.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method and device for processing an active / standby switching signal. Background technique [0002] Based on the requirements of safety and reliability, some devices or systems of current communication technologies (such as clocks, services, NCP (Network Core Protocol, Network Core Protocol), etc.) mostly adopt the mode of master and backup devices (or modules). When the equipment fails or needs to be repaired, the function of the standby equipment to replace the main equipment meets the safety and reliability requirements to ensure the normal operation of the entire system. [0003] Usually, the active module and the standby module inform the external device of its own active and standby status through an outgoing message, usually the message is a level signal; the active device sends a low-level signal, and the standby module sends a high-level signal Signal. When active / s...

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Problems solved by technology

[0004] During the research and practice of the prior art, the inventors of the present invention found that when the master-standby switchover occurs, due to some unexpected reasons or due to the settings of the equipment itself, the switching of the level signals of the master module and the backup module There will be a delay or no switching, which will cause the active and standby modules to send high-level signals to the outside at the same time within a certain period of time, causing the system to determine that both modules are in the standby state, see figure 2 , the clock, business, and internal control of the system are temporarily interrupted

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