Hope someone can help me in this issue, today I spent several hours in it but I wasn't be able to fix it.
Two ASA 5510 appliances configured for failover through management interface. At the beginning, both were connected to a switch with 2 sub-interfaces in each one, one VLAN for sinchro and the other one for stateful.
As it didn't work I connected both ASA directly configuring only the monitoring interface. I have ping between them, both interfaces are up and I removed the command "management-only" from management. Both have the same license, model, version but always have the same error:
Failover LAN Interface: controlasa Management0/0 (Failed - No Switchover)
Attach the output from the next commands from both ASA:
- show run failover
- show failover
- show version
- show run management 0/0
Hope someone sees what happen...