Active/standby switchover is performed once the priorities of VGMP groups change. The priorities cannot be manually changed. You can use either of the following methods to change the priorities:
Manually disable a member interface in the VRRP group on the active firewall to trigger active/standby switchover. If the switchover fails, services are interrupted.
Manually disable an idle interface on the active firewall and run the hrp track active command to add the interface to the active VGMP group.