# Managing the MAC address forwarding database table

This section shows you how to view the contents of the MAC address forwarding database table, as well as setting the age-out time for the addresses. The following topics are covered:

The MAC flush feature is a direct way to flush MAC addresses from the MAC address table. The MAC flush commands allow flushing of:

- a single MAC address (see Removing a single address from the MAC address table)

- all addresses from the MAC address table (see Clearing the MAC address table

- a port or list of ports (see Clearing the MAC address table on a FastEthernet interface)

- a trunk (see Clearing the MAC address table on a trunk)

- a VLAN (see Clearing the MAC address table on a VLAN)

MAC flush deletes dynamically learned addresses. MAC flush commands may not be executed instantly when the command is issued. Since flushing the MAC address table is not considered an urgent task, MAC flush commands are assigned the lowest priority and placed in a queue.

The MAC flush commands are supported in ACLI, SNMP, or EDM.