H3C Technologies H3C SR6600-X - Manual (Page 83)

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Troubleshooting system exceptions
Configuring the exception handling methods
When 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 standby MPU, you
can solve the problem in one of the following methods:
• reboot—Rebooting the failed MPU so that the MPU restores to normal operating status.
• maintain—Maintaining the current status of the failed MPU so that the system does not take any
restoration measures. Some software faults are hard to reproduce, and the printed information will
be lost after the router reboots. In this case, you can maintain the current status of the router,
facilitating fault location.
If the FIP or SAP/OAP module encounters software faults, the solving method is always reboot, which
reboots the failed module.
On a router with two MPUs, rebooting the active MPU triggers an active and standby switchover, and the
former standby MPU takes over. On a router with only one MPU, rebooting the active MPU reboots the
router.
When system faults occur, the system fault solving method applies to only the failed module, and
rebooting the module does not interrupt the other modules.
To configure the exception handling methods:
Step Command Remarks
1. Enter system view. system-view N/A
2. Configure the exception
handling methods.
system-failure { maintain |
reboot }
Optional.
By default, the system adopts the reboot
method to handle exceptions.
Displaying the exception handling method
Use the display system-failure command to display the exception handling method.
display system-failure
System failure handling method: reboot
Rebooting a card or router
CAUTION:
Do not use the reboot command to reboot the standby MPU. To reboot it, use the slave restart command.
When upgrading and maintaining the system software image or configuration file for the router, you
need to reboot the router. After you change the operating mode of a MPU or LPU, you must restart the
corresponding module.
To reboot a router, use one of the following methods: