I have an ASA with FirePower and also have 2 x FMC in a HA configuration (over a layer 3). My question is, how does the ASA FirePower senor know how to failover to the secondary FMC in the event the primary FMC dies? Since the initial configuration on the ASA FirePower sensor only one FMC management IP is added/allowed.
Any advise would be great.
If you issue sftunnel-status you should see the 2 fmc ip.
Or you can issue show managers. Not sure if you see when issuing this last command but with the first one you will see it.