Cisco 2500 series constant radius server unavailable / available

[jfinley]

We have a 1 x 2008r2 server running radius; straight forward setup via Cisco documentation.   The Trap logs are full of these about every 10 minutes.  I've confirmed the SECRET between the Cisco WC & Radius are correct and users can connect....most of the time.  

What I've done thus far....

• Fallback Mode is off
• Upped the Server Timeout to 20 seconds

From Wireless Controller:

RADIUS server 10.10.10.225:1813 failed to respond to request (ID 137) for client 14:7d:c5:c2:b8:78 / user jsmith

RADIUS auth-server 10.10.10.225:1812 available

RADIUS auth-server 10.10.10.225:1812 unavailable

[johnmdolan]

Did you get this resolved?  I have the same problem on a 7500 flex controller.

[LJ Gabrillo]

There is most likely still lacking configuration on your Windows Server 2008R2

Personally, i dont like using Windows Serv as a straightdown RADIUS server. Configuring RADIUS on windows can get quite complicated 

Most of my deployments use:
1. LDAP           -Polling AD Users
2. Cisco ACS   -RADIUS and TACACS+

Also, have you tried disabling firewall on your server? If you have any AV with firewall software on that, make sure to disable that too.

Additionally, looks like your RADIUS connection is not reliable, considering it becomes available, then becomes unavailable again vice-versa i presume

Better verify that your RADIUS timers on your server matches that on the 2504

[Glenn Martin]

Moving discussion to Small Business Wireless community