Hi all,
My customer is facing an issue where the wireless clients will experiences disconnections randomly and is getting frequently. When I checked the logs of C9800, I saw many logs below:
Nov 8 12:01:34.531: %DOT1X-5-FAIL: Chassis 1 R0/0: wncd: Authentication failed for client (5ebb.2ac6.f188) with reason (Timeout) on Interface capwap_90000028 AuditSessionID 013E1BAC00000C1FFF4FFAEA Username: <omitted>
*Nov 8 12:01:23.523: %DOT1X-5-FAIL: Chassis 1 R0/0: wncd: Authentication failed for client (f8ac.65c1.6f65) with reason (Timeout) on Interface capwap_90000020 AuditSessionID 013E1BAC00000C1EFF4E6CF7 Username: <omitted>
*Nov 8 11:59:53.523: %DOT1X-5-FAIL: Chassis 1 R0/0: wncd: Authentication failed for client (f8ac.65c1.6f65) with reason (Timeout) on Interface capwap_90000020 AuditSessionID 013E1BAC00000C1EFF4E6CF7 Username: <omitted>
I had done some research and found out there are similar symptoms hitting bug CSCvw53548. During that time the WLC was running on version 16.12.04a. Therefore, we proceeded with an upgrade to version 17.03.03, which is the known fixed release stated in the BST. However, the disconnection issue still persist and the same logs keep on appearing every few minutes. Anyone have any ideas so far or encounter similar scenario?
Hardware is C9800-L-C
