Please help me on how I can set-up my WLAN controller 4402 for Radius authentication, if you have links or procedures that you can share, that will be very much appreciated. :-)
Thanks in advance.
It depends if you are using Cisco ACS or Windows IAS. The controller config is the same but the RADIUS side is different.
Also what are you trying to configure, managemment users, PEAP etc via RADIUS
PEAP via ACS is here
PEAP via IAS is here
Hope that helps