64You can use the slave switchover command to trigger an active and standby switchover. For moreinformation about the command, see H3C SR6600/SR6600-X Routers High Availability CommandReference.When the standby MPU is started, the active MPU performs initial synchronization for the standbyMPU. During the synchronization process, if you press Enter on the configuration terminal, thesystem prompts that you cannot execute any command on the active MPU or standby MPU. Afterthe initial synchronization process is complete, you can execute configuration commands on theactive MPU, and the configurations of the active MPU are real-time synchronized (copied) to thestandby MPU, so that the active MPU and the standby MPU can have the same configurations.Solving system faultsSolving system faultsWhen the system detects faults (such as system instruction faults, invalid addresses, data overflow,null pointers, and division by zero operations) during the operation of the active MPU or standbyMPU, you can solve the problem in one of the following methods:• reboot—Rebooting the failed MPU so that the MPU restores to normal operational status.• maintain—Maintaining the current status of the failed MPU so that the system does not takeany restoration measures. Some software faults are hard to reproduce, and the printedinformation will be lost after the router reboots. In this case, you can maintain the current statusof the router, facilitating fault location.On a router with two MPUs, rebooting the active MPU triggers an active and standby switchover, andthe former standby MPU takes over.On a router with only one MPU, rebooting the active MPU reboots the router.If the FIP or SAP/OAP module encounters software faults, the solving method is always reboot,which reboots the failed module.When system faults occur, the system fault solving method applies to only the failed module, andrebooting the module does not interrupt the other modules.To solve system faults:Step Command Remarks1. Enter system view. system-view N/A2. Specify the system faultsolving method for the activeMPU and standby MPU.system-failure { maintain |reboot }Optional.reboot by default for the activeMPU and standby MPU.Viewing the system fault solving methodUse the display system-failure command to display the system fault solving method. display system-failureSystem failure handling method: reboot
