We have dot1x/mab up and running and seem to have an odd issue that puts the port into an error state. We've set the port to auto-recover after 60s which it does and then runs for quite a while and then errors out again at different intervals.
%AUTHMGR-5-SECURITY_VIOLATION: Security violation on the interface GigabitEthernet0/9 new MAC address (900a.a006.2d00) is seen.AuditSessionID Unassigned
even though it's the same phone/pc on the port. The switch is an old 3560G running 15.0.10 which we are using for testing prior to putting dot1x/mab into production.
Any idea of what could be causing this to happen?
Please check port security is enabled on the interface or not.port security won’t play well with 802.1x as both are l2 security.