standby IP on Subinterface on ASA in the same subnet

[Wan_Whisperer]

This is an ASA that was configured before my time and I do not understand why They configured a standby ip address in the same subnet.  See below

e0/0.50

Vlan 50

Nameif Server-Farm

security level 100

ip address 192.168.1.1 255.255.255.0 standby 192.168.1.2

I would like to get rid of the standby to free up one more ip.  Can anyone think of why this was put there?

Thanks,

Noob

[Rob Ingram · Accepted solution]

Hi,
It looks like the ASA was or is part of an active/standby failover pair, if you check the configuration and it has "failover" commands defined, then it was/is configured for failover.

Is there a secondary ASA appliance?
Do the other interfaces on the ASA have a standby IP address?
Run the command "show failover" to confirm if failover is configured and active. If yes, then you don't want to remove the standby ip address.

HTH