H3C Technologies H3C S10500 Series Switches - Manual (Page 14)

5
Active and standby switchover configuration
Active and standby switchover overview
An S10500 switch can be configured with two MPUs. The one with a smaller slot number is the active
MPU, and the other is the standby MPU.
The standby MPU keeps its configuration the same as the active MPU through the synchronization
function. When the active MPU fails, the standby MPU becomes the active MPU to process services to
ensure the normal operation of the device. This switchover process is called an active and standby
switchover.
Active and standby switchover functions in the following two ways:
• Automatic active and standby switchover. If the active MPU fails or is unplugged, the system
automatically performs an active and standby switchover to enable the standby MPU to function as
the active MPU.
• Manual active and standby switchover, which is an active and standby switchover performed at the
command line interface.
CAUTION:
•
You cannot execute any command on the standby MPU, and you need to perform configurations at the
command line interface on the active MPU, which will synchronize the configurations to the standby
MPU.
• When you upgrade an S10500 switch, ensure that the software versions of the active MPU and the
standby MPU are the same, and reboot the entire device after upgrading the switch.
Active and standby switchover configuration task
list
Task Remarks
Ignoring version check of the standby MPU Optional
Restarting the standby MPU Optional
Manually performing an active and standby switchover Optional
Ignoring version check of the standby MPU
When the standby MPU is powered on, the system checks the versions of the active MPU and standby
MPU. If the versions of the active MPU and standby MPU are not consistent, the standby MPU cannot be
started.
Follow these steps to disable the system from checking the version of the standby MPU: