Cisco ASA Active-Standby failover preemption

When a standby ASA loses connectivity with its active neighbor, it automatically becomes active. Once connectivity is reestablished, it automatically goes into standby mode once again. This is a result of the failover lan unit secondary command.

Links: https://forum.networklessons.com/t/cisco-asa-firewall-active-standby-failover/838/73?u=lagapides