I have a pair of ASA5520's configure for failover. The OS, interfaces, and configuration on both devices are identical apart from the IP addresses. There are 8 interfaces in each device, failover monitoring every interface and the criteria is that 1 interface failure would trigger the failover. when I test the failover this is what happens:-
1) If I fail the switch that the ASA connects to, failover does not occur.
2) If I power off the primary ASA the the secondary unit becomes active.
3) If both firewalls are on and I force the secondary unit to failover active, both primary and secondary stay active.
am I missing something obvious? - would anyone be able to help me to resolve this issue please.