Folks, I am receiving an ACS error message. "NAS duplicated authentication attempt".
I get this error only with one client device. An HP Procurve M111 Wireless Bridge. This error message effectively denies authentication to the client.
The client is configured for WPA/PEAP. Sometimes it works ok. I do not see the error message and client stays connected. Some period of time later it randomly shows up again and the client is denied access.
Can anyone help me determine what may be causing this error? From what I read on CCO, it means the client is basically sending EAP-Requests too quickly. So what can I do?
1 - Is there a way to soften this on the ACS so it does not deauthenticate due to multiple authentication requests?
2 - Is there a something I can do on the controller? I.E The Radius server timeout value (current set at default of 2?).
Any input is appreciated. I am only seeing the problem with one client. All other clients using WPA/PEAP (~200) are not having issues.