To remove a specified address (or set of addresses) from the MAC address table, use the clear mac address-table command in privileged EXEC mode. dynamic (Optional) Clears only dynamic addresses. Use the following commands to clear learned MAC addresses from a port or list of ports, a specific VLAN, or to clear a specific MAC address from a VLAN. This command is configured in global. clear port-security Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches clear port-security To delete from the MAC address table all secure addresses, all configured secure addresses, or a specific dynamic or sticky secure address on an interface, use the clear port-security command. Note: if you do not know the port info, log into the.