ASA1 설정
config#failover lan unit primary
config#interface Ethernet 0/3
config-if#no shutdown
config#failover lan interface FAILOVER Ethernet 0/3
config#failover link FAILOVER Ethernet 0/3
config#failover interface ip FAILOVER 192.168.12.1 255.255.255.0 standby 192.168.12.2
config#failover
config#interface Ethernet 0/0
config-if#no shutdown
config-if#nameif INSIDE
config-if#ip address 192.168.1.254 255.255.255.0 standby 192.168.1.253
->평소 254로 작동하다가 standby로 작동 시 253으로 작동
ASA2 설정
config#failover lan unit secondary
config#failover lan interface FAILOVER Ethernet 0/3
config#failover link FAILOVER Ethernet 0/3
config#failover interface ip FAILOVER 192.168.12.1 255.255.255.0 standby 192.168.12.2
config#failover
config#interface Ethernet 0/3
config-if#no shutdown
