Having problems authenticating client computers onto the wireless network using a Cisco AP1252 via FreeRadius 2.1.10 on Ubuntu 12.04.2 serves

[Elizabeth Fife]

HI I am having problems authenticating client computers onto the wireless network using a Cisco AP1252 via FreeRadius 2.1.10 on Ubuntu 12.04.2 serves

 Setup:
I
 have a Cisco AP1252 wireless Access Point connected to a Cisco ASA5510 
on subnet X.X.5.Z    The access point ip address is X.X.5.101 
The ASA on another port is also connected to the wired network on a different subnet X.X.0.Z 
 On
 the wired network are two radius servers - Ubuntus servers running FreeRadius 2.1.10 which are running fine and reliably authenticate wired users 
for ssh connections to the ASA and importantly to the AP1252 as well 
(The radius servers ip addresses are X.X.0.191 and X.X.0.192)
 Problem:
When
 a wireless user tries to connect to the wireless network via the AP1252
 after being disconnected form it for a while (or after waking from a 
long sleep) they are never authenticated. They just try over and over 
and never obtain an IP
 Interestingly
 in such a case neither Ubuntu server shows any sign of receiving an 
authentication request from the AP  - Both ubuntu servers are running in
 debug mode so they show any activity - there is none
  Oddly:
If
 i try to authenticate a user wirelessly to the AP and leave it in the 
usual state of trying over and over (with no visible activity on the 
ubuntu servers) BUT then go to a wired machine and attempt to 
authenticate an ssh connection to the AP1252 using a terminal 
command     ssh user1 at X.X.5.101   THEN as soon as I hit enter on that 
request (and before I enter a password for the ssh connection) THE 
WAITING WIRELESS USER IS IMMEDIATELY AUTHENTICATED and assigned an IP address  (and the ubuntu 
server shows the authentication activity for the wireless user)
  Please
 help me understand what might be causing this behavior - it seems like 
the AP sleeping and the wired ssh request wakes it up so that it sees 
the pending wireless user waiting and then acts on that completing the 
wireless user authentication request
 Help
 Elizabeth
 		 	   		  
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