I'm configuring a pair of SSG320s in an active/passive cluster. I've plugged 2 crossover cables into ports in HA zones on each of the firewalls. Looking at the interface config the HA interfaces are layer 3 and don't have IP addresses on them (this is the default). Do I need to put IP addresses on them? Should I make them layer 2?
They are plugged directly from 1 firewall to the other so I wouldn't have thought they needed addresses.