Hi, have a problem with clients connection to AP. On WLC can see status Probing, sometimes associated but no IP received. It was working for a month but stopped for some reason. Am slightly not sure on the steps how it all works ? First authentication takes the place and then IP assignment by DHCP, correct ? Could you please help in pinpointing the problem ? Radius reachable from WLC, AP's have IP's assigned by DHCP server from another subnet
Well best thing to do is create a new ssid and leave it open for testing. See if you can associate an dobtain an ip address. this will eliminate that dhcp is an issue. Then configure authentication on the new ssid to what you had in the existing ssid. Then see if you can authenticate and obtain an ip address. Look at the logs on the wlc and on acs. Post the logs if you still can't find out what the issue might be.
The client excluded, means that the device is not passing authentication. Look at the device setting once again. After 3 attempt, the wlc puts the device in client exclusion for 60 seconds (default unless you change it or remove client exclusion). But if the device keeps trying, that device will be stuck in client exclusion.