I got Cisco Wifi Controller with 1300 Access Points working with TACACS+.
We have 7920 and 7921 wifi phones. Initiallty, everything worked fine, but today I noticed that 7920 phone do not authenticate. I looked through Controllers logs and found this:
Could not process the RSN and WARP IEs. station not using RSN (WPA2) on WLAN requiring RSN.
However, 7921 work fine.
What is the problem?