Windows Client <==> AP <==> Cisco ACS Radius Server <==> RSA Ace/ServerPlease dont use the radius server provided with RSA Ace/Server, I dont think it support EAP.Windows Client - XP with Lastest Service PackWireless Client - Download lastest patch f...

refer to ==> http://support.microsoft.com/default.aspx?scid=kb;en-us;823731

Yes, we have implemented the following with success :Windows Client <==> Access Point <==> FW <==> Radius <==> Windows DC/ADWindows OS : XP Client SP 1Supplicant : Built-in Wireless SupplicantAuthentication : 802.1x PEAP(MS-Chapv2)Access Point : Airo...

That means that you are using Cisco ACU Client with Cisco PEAP supplicant installed right ?a) 1st Authentication ==> Wireless Open/Shared Authentication 2nd Authentication ==> 802.1x PEAP authentication if suspect authenticationphase , check IOS...