C8821 cannot connect to WIFI after firmware upgrade to sip8821.11-0-5-17

[ethan.sun]

After apply the devicepack cmterm-devicepack11.5.1.17105-1 on ccm, all of C8821's firmwares are upgraded to sip8821.11-0-5-17 and cannot get WIFI connection anymore.

WLC Version:

C5520, 8.3.150.0

C5500, 8.0.152.12

Auth method: local RADIUS on WLC, EAP-FAST on C8821

What we have tried:

Upgrade C8821 to sip8821.11-0-5SR1-4, not work

Downgrade to previous sip8821.11-0-4SR1-13, not work, strange

Create a new SSID with WEP, get connection to WIFI

Error messages on WLC:

*Dot1x_NW_MsgTask_4: Jul 23 12:49:09.881: %DOT1X-3-ABORT_AUTH: 1x_bauth_sm.c:477  Authentication Aborted for  client 00:aa:6e:xx:xx:xx Abort Reason:DOT1X RESTARTED DUE TO EAPOL-START/CLIENT ROAM

Anybody else got the same problem? We have around 20 C8821 phones are get disconnected for days.

[Leo Laohoo]

Try using OPEN authentication or PSK.

[ethan.sun]

Thanks Leo for your reply, OPEN or PSK or WEP all work fine but consider security issue we are not supposed to use that, and we have over 100 other type of phones like C7921, C7925 in use, not possible to change the AUTH method in one second...
The point is with the previous firmware all the C8821 worked properly.

[Leo Laohoo]

CSCvi80433

[nguyen.matthias]

I have the same issue currently 11.0(4)SR3 upgrading to 11.0(5) or 11.0(5)SR1 and the phones never reconnected to the wifi.

My workaround was switiching from security mode EAP-FAST to PEAP-MSCHAPV2 and the phone reconnected to the wifi.

I hope there will be a fix coming soon with a fix for this issue. EAP-FAST is recommend for the CP-8821 and now i can't use it...