Cisco Autonomous Access Point Configuration for PEAP Authentication with Windows RADIUS Server

Refer the link below for configuring Microsoft IAS Server (RADIUS Server)

Microsoft IAS RADIUS for wireless authentication

and the Cisco Autonomous Access-Point configuration needs to be as below

aaa group server radius rad_eap

server <RADIUS_SERVER_IP> auth-port 1812 acct-port 1813

!

aaa authentication login eap_methods group rad_eap

!

dot11 ssid PUBLIC

authentication open eap eap_methods

authentication network-eap eap_methods

authentication key-management wpa

guest-mode

!

interface Dot11Radio0

encryption mode ciphers tkip (or aes-ccm)

ssid PUBLIC

!

radius-server host <RADIUS_SERVER_IP> auth-port 1812 acct-port 1813 key <RADIUS_KEY>