During a switchover, system control and routing protocol execution are transferred from the active to the standby CSM. A switchover may occur automatically or manually.
An automatic switchover may occur under the following conditions:
a fault condition arises that causes the active CSM to crash or reboot
the active CSM is declared down (not responding)
online removal of the active CSM
Users can manually force the switchover from the active CSM to the standby CSM by using the admin redundancy force-switchover now CLI command or the admin reboot active [now] CLI command.
With the 7705 SAR, the admin reboot active [now] CLI command does not cause both CSMs to reboot.