- Loopback Interface cannot be configured on ASA.
- If you use one interface as Failover link and Stateful failover link, you must configure the same interface name.
failover lan interface <name> GigabitEthernet1/1
failover link <name> GigabitEthernet1/1
- ASA Failover syncs the configuration, including the hostname. In other words, the host name of the Primary device and the Secondary device will be the same.