HI
Regarding BugID CSCug90127
Please refer to below for better understanding
https://supportforums.cisco.com/discussion/12100871/mac-address-switch-port-when-port-security-enabled
Question: How no switchport command for the interface will solve the issue?? Please advise
Below are the details of the BUG
Symptom:
Port goes into err-disabled state because of port-security security violations. This happens due to "Total MAC address" learned is not synced across the stack members.
Conditions:
configure "switchport port-security maximum " on an interface on a stack member and send traffic from the device connected to it. After sometime, device goes into err-disabled state because of the security-violations.
Workaround:
Run "no switchport" command for the interface.