How to limit connection for an user on 2504 WLC use Radius Authen

[vutuantuan92]

I have 2504 WLC with Radius Authen. I set "Max Concurrent Logins for a user name" = 1. But user can connect to wireless by many device per an UserId.
How to limit connection? One user ->one device 

[Chris Donkelaar]

Thanks to dancampb (https://supportforums.cisco.com/discussion/10783596/wlc-4400-issue-user-login-policies-parameter):

The user login policies is to limit the number of concurrent logins of the local netusers of the controller.  It doesn't track the usernames from radius since the usename may not get picked up depending on the EAP type.  You can limit the number of concurrent logins from the Radius server.