"IIF-ID" in "show authentication sessions" output on Catalyst 9K

[rezaalikhani]

Hi;

Can anyone provide my some info regarding "IIF-ID" field, which is new in Catalyst 9K switches when running "show authentication sessions" command?

Thanks

[balaji.bandi]

• I - Awaiting IIF ID allocation—The IIF ID is a system-wide identifier for a session or any other object the platform must know about. The platform must have the IIF ID before proceeding.

check reference guide :

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ibns/command/ibns-xe-3se-3850-cr-book/ibns-cr-3850.html

[MHM Cisco World]

IIF-ID is interface ID in hex

It not so important except case ypu use it in ISE policy

That what I know about this value 

MHM

[thomas]

> iif_id id —The target interface ID. Valid range is from 1 to 4294967295.

From Command Reference, Cisco IOS XE Fuji 16.9.x (Catalyst 3650 Switches)