Network Access Profile / SSID
You can create a NAP with the IP address of the WLC or with a NAR, but can you create a filter on Source MAC or SSID ? Yes it’s possible.
When you sniff the radius packets you will see the Source MAC and SSID with the right AVP:
The calling station is the client. The called station is NOT the WLC, but the AP which the client wants to connect to.
I don’t know when to use it, but it’s possible.. 😉