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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
78-16201-01
Chapter2Cisco IOS Commands for the Catalyst 4500 Series Switches
show mac-address-table dynamic
show mac-address-table dynamic
To display dynamic MAC address table entries only, use the show mac-address-table dynamic
command.
show mac-address-table dynamic [address mac_addr | interface type slot/port |
protocol protocol | vlan vlan_id]
Syntax Description
Defaults This command has no default settings.
Command Modes Privileged EXEC
Command History
Usage Guidelines The keyword definitions for the protocol argument are as follows:
• assigned specifies assigned protocol entries.
• ip specifies IP protocol.
• ipx specifies IPX protocols.
• other specifies other protocol entries.
The show mac-address-table dynamic command output for an EtherChannel interface changes the port
number designation (for example, 5/7) to a port group number (for example, Po80).
For MAC address table entries used by routed ports, the routed port name is displayed in the “vlan”
column rather than the internal VLAN number.
Examples This example shows how to display all dynamic MAC address entries:
Switch# show mac-address-table dynamic
Unicast Entries
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
1 0000.0000.0201 dynamic ip FastEthernet6/15
address mac_addr (Optional) Specifies a 48-bit MAC address; the valid format is H.H.H.
interface type slot/port (Optional) Specifies an interface to match; valid values for type are
FastEthernet and GigabitEthernet.
protocol protocol (Optional) Specifies a protocol. See “Usage Guidelines” for more
information.
vlan vlan_id (Optional) Displays entries for a specific VLAN; valid values are from 1
to 4094.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
12.1(12c)EW Added support for extended VLAN addresses.
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