This issue occurs due to the presence of Cisco bug ID CSCdz53998.
Note: A CatOS upgrade from a release that does not support dot1x to a release that does can trigger this problem.
In order to resolve this issue, perform these steps:
- Enter the switch> (enable) set feature dot1x radius-keeplive disable command in order to disable the the dot1x keepalive
feature that checks whether the RADIUS server is active.
- Download and upgrade the Cisco Catalyst software to the latest version available.
Troubleshoot software feature
Features & Tasks
Protocol / Ports