I am trying to setup two pairs of ASA 5510s which they will both be setup as Active/Standby. The failover interfaces will be connected via Ethernet to the same switch. Do the interfaces need to be on separate individual VLANs on the switch to work properly? Or do they only need to be on different IP subnets.
Reason I am asking is because the 2 pairs will not stay synchronized as a pair and I can't figure out why. The configs for each pair are identical as is the hardware, but the standby will always lose connection and default back to "ActNoFailOver" or "StdbyNoFailOver" status.