Is there any documentation related to Multi-site Clustering with Firepower?Is this still the best approach to protect North / South traffic?

Is it normal to have "Not avaiable" under connected interface for "show fcns database detail" on a native FC target device?port-wwn (vendor) :10:01:d0:49:ea:52:9a:f0node-wwn :10:00:d0:39:ea:52:8a:f0class :3node-ip-addr :0.0.0.0ipa :ff ff ff ff ff ff ...

When looking under Analysis > Intrusions > Events, I am not able to see any information under "Packet Information"Is there anything I need to do to enable this information? It would be intresting to see more info after an Intrustion Event has been dr...