ASA Redundant Interface

ciscoasa(config)# int redundant 1
ciscoasa(config-if)# member-interface ethernet 0/0
ciscoasa(config-if)# member-interface ethernet 0/1
ciscoasa(config-if)# nameif outside
ciscoasa(config-if)# ip address 10.10.10.1 255.255.255.0
ciscoasa# show interface redundant 1 : to check both are operational
at the bottom we can see redundancy information
show interface :- we can see which one is active
show interface | include (Interface|member)
NOTE: if primary interface came up it will not switch back until the current one fails