Specifications

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
clear mac-address-table dynamic
clear mac-addre ss-table dynam ic
To clear the dynamic address entries from the Layer 2 MAC address table, use the clear
mac-address-table dynamic command.
clear mac-address-table dynamic [{address mac_addr} | {interface interface}] [vlan vlan_id]
Syntax Description
Defaults T his command has no default settings.
Command Modes Privileged EXEC mode
Usage Guidelines E nter the clear mac-address-table dynamic command with no arguments to remove all dynamic entries
from the table.
Examples This example shows how to clear all the dynamic Layer 2 entries for a specific interface (gi1/1):
Switch# clear mac-address-table dynamic interface gi1/1
Switch#
Related Commands
address mac_addr (Optional) Specifies the MAC address.
interface interface (Optional) Specifies the interface and clears the entries associated with it; valid
values are FastEthernet and GigabitEthernet.
vlan vlan_id (Optional) Specifies the VLANs; valid values are from 1 to 4094.
Command Description
mac-address-table aging-time Configures the aging time for entries in the Layer 2 table.
main-cpu Enters the main CPU submode and manually synchronizes
the configurations on two supervisor engines.
show mac-address-ta ble ad dress Displays the information about the MAC-address table.