ASA - Transparent failover pair without STP possible?
I’m trying to see if it is possible to introduce two transparent ASA 5520s in an Active/Standby pair between 2 switches that don't currently run any form of STP.
Does anyone know if this is a supported configuration? I’m aware that if both ASA units thought that they were the master this could introduce a L2 loop but under normal operation would a failover succeed without creating a loop or is STP definitely required to achieve this set-up?
I'm trying to avoid having to use routed mode in this instance as re-numbering the address spaces would be quite difficult for this particular scenario.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...