PIX/ASA 7.x: Active/Active Failover Configuration Example - Cisco Systems

PIX/ASA 7.x: Active/Active Failover Configuration Example - Cisco Systems:
Failover Triggers In Active/Active failover, failover can be triggered at the unit level if one of the following events occurs:
* The unit has a hardware failure.
* The unit has a power failure.
* The unit has a software failure.
* The no failover active or the failover active command is entered in the system execution space.