method for duplexing control bus fail checking in switching system processor

摘要

When a hernia occurs in the system reset or board in a state in which the duplication operation between the access device processor in the switching system to perform to prevent abnormal switching of the control bus to maintain the stable operation.; The present invention determines whether the one that maintain an active state out of the redundant boards which includes a processor, and the other maintains the standby state, when a reset occurs is detected, the board maintains the current active state is reset occurs during which process and; If it maintains the current active board at which the reset occurs by output to the stand-by state board status signals from the active board to the same level as the state signal input from the board in the standby mode, the board of the stand-by state the process of switching to the active state and; A board on which the reset occurs if the board and maintain the current standby state to the standby mode state in which the applied information on the status of the board from the board of the active status information and the other level to output to the active board to the current active state It characterized by comprising the step of maintaining, and continuously maintaining the operation of the board.; Accordingly, the present invention is to eliminate the occurrence of abnormal transfer by ensuring that even if a reset or hernia in the board and maintain a stand-by state occurs maintain an active state, and are continuously maintained in the board operations that provides a stability to the operation of the system.