Situation #1. "cluster virtual ffo off"   AN1(master) sends VRRP packets on a routine schedule, and AN2(backup) doesn't send VRRP...

Advertisement interval broadcast its current state/status (backup or master) to the other unit.  The default interval is 5 second.

By default cluster authentication is disable (0). Enable cluster authentication (1) needs to specify the same authentication password in simple text...

When Preemption is enabled (preemption = 1 in CLI), the Cluster Virtual ID with the highest priority will be in the master state. Preemption is...

Your virtual cluster state would help you determine.  Using webui under “system configuration” -> clustering -> Virtual...

It's most likely that both units are not seeing each other heart beat.  They use VRRP to communicate to each other.  You may want to check...

If you run the system mode as transparent, you'll need to cluster the inside interface.  In running as transparent mode, your real servers have...

Normally, you would cluster the outside interface or an interface that bind the VIPs, but other interfaces like inside interface, bond, vlan can be...

It is supported up to 255 VIPs per Virtual Cluster ID (VCID).