The firewall has two default VGMP groups: active and standby VGMP groups. The default priority of the active VGMP group is 65001, and that of the standby VGMP group is 65000.
The priority of the VGMP group is lowered by 2 only when:
A physical interface in the VGMP group fails.
A Eth-Trunk interface in the VGMP group fails. The failure of a member interface of the Eth-Trunk does not affect the priority of the VGMP group.
A member interface of the VGMP group in a VLAN fails.
A member interface of an IP-Link fails.