ASA 5540 has 4 gigabit and 1 FE ports. ( most likely it is management - correct me if I am worng ). If we need three interfaces inside,outside and DMZ we are left with only one gigabit interface.
if we need to configure failover in stateful mode we need two more interfaces first for "Failover-LAN" and another for "State". In our case we would need total 5 gigabit interfces namely - inside,outside,dmz, failover-lan, state.
Case 1 : configure regular failover where you need only one interface, second interface for "state" is optional. This is - inside, outside, dmz and Failover-LAN total four interfaces. In this case it will be regular failover configuration ( stateful failover is not posible ). Can this be done for regular failover configuration?
Case 2 : if possible use management interface as the state interface and configure "statefull" failover. I am not sure if this ca be done.
Please share the experience
Thanks in advance