The commands for online signature database updates can be automatically synchronized to the standby firewall. The active and standby firewalls download the latest signature database as scheduled from the security center. Besides, when you manually update the signature database on the active firewall, the update is automatically implemented on the standby firewall.
The hot standby function does not require a license.
If other services require a license, ensure that licenses with the same specifications are activated on both the active and standby firewalls. Otherwise, services may be interrupted.
The VRRP configurations on the active and standby devices are inconsistent. In this case, run the display vrrp command to check the VRRP configurations of the devices.