Cisco Wireless Controller bouncing between radius servers

MS_WAN_Tech
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What would cause a Cisco 4402 WLC to deactivate from 1 radius server to another, repeatedly (like 14times within 10minutes)?  and would that bouncing cause existing connections to be dropped?
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Istvan KalmarHead of IT Security Division
Top Expert 2010
Commented:
intresting, please ping the wlc address from radius server and tell us the ten minutes timouts...
See if you can adjust the roaming aggressiveness on the WLC.
w.r.t. the existing connections, the connection typically wouldn't drop unless used for VoIP.

Warm regards,
Sarang
Commented:
How are the two Radius servers set up?
With load balancing or as failover?

Users should not need to reauthenticate before reassociating. So if users have authenticated and you shut down radius for a short time, they won't be deassociated ..

Author

Commented:
Would have been nice to have access to Radius Servers, but don't - so can't ping :((  They are set up as Failover.  Users are dropping off and wasn't sure why, learned that I may have Cisco Bug – CSCsg50343; Condition - LWAPP IOS APs, controlled by a WLC running 4.0.179.*.; Cisco recommended workaround – None; Alternative solution -  This is fixed in 4.0.206.0.  Just did FTP and waiting for OK to reload.  In the mean time, I can play with roaming aggressiveness and will let you know what happens.  

Author

Commented:
OOPS, forgot to say - Thank you for sharing your thoughts - it gives me some directions to go, especially if it is a multilayer problem.

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