its my first attempt of creating RADIUS which is already installed on a windows server R2 standard edition.
I then configure this on a cisco switch, but no luck as to how its supposed to work and authenticate any ideas
Next make sure the shared secret is setup between NPS and the switch. You should then try to ssh/telnet into the switch. Then check the NPS Appplication log to determine if the request if making it to NPS and what NPS is doing with it.