Question

A network technician configured port security on an access switchport with the default violation mode. A user connects a small unmanaged hub to the port and attaches two laptops, causing the port to stop forwarding traffic. The technician checks the interface and sees the status is 'err-disabled'. What must the technician do to restore the port to normal operation after removing the extra device?

Accepted Answer

Issue 'shutdown' followed by 'no shutdown' on the interface

Answer

Reload the entire switch to clear the security violation counter

Answer

Change the violation mode to 'protect' while the port is err-disabled

Answer

Clear the MAC address table with 'clear mac address-table dynamic'