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
show mac-address-table dynamic
show mac-address- table dynam ic
To display the dynamic MAC address table entr ies only, use the show ma c-ad dress -tab le dyna mic
command.
show m ac -ad dre ss- ta ble dy na mic [ address mac_addr | interface type slot/port |
protocol protocol | vlan vlan_ id]
Syntax Description
Defaults T his command has no default settings.
Command Modes Privileged EXE C mode
Usage Guidelines T he keyword definitions for the protocol argument are as follows:
• assign ed specifies assigned protoco l entries.
• ip specifies IP prot ocol.
• ipx spec ifies IPX protoco ls.
• other specifies other protocol entries.
The show mac-address-table dynamic command output for an EtherChannel interface changes the port
number designation (such a s, 5/7) to a port group number ( such as, Po80).
For the MAC address table entries that are used by the routed ports, the routed port name is d isplayed in
the “vlan” column not the internal VLAN number.
Examples This exampl e shows how to display all the dyna mic 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
1 0000.0000.0202 dynamic ip FastEthernet6/15
1 0000.0000.0203 dynamic ip,assigned FastEthernet6/15
1 0000.0000.0204 dynamic ip,assigned FastEthernet6/15
1 0000.0000.0205 dynamic ip,assigned FastEthernet6/15
2 0000.0000.0101 dynamic ip FastEthernet6/16
2 0000.0000.0102 dynamic ip FastEthernet6/16
2 0000.0000.0103 dynamic ip,assigned FastEthernet6/16
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, gigabitethernet , and t engigabitethernet.
protocol protocol (Optional) Specifies a protocol. See the “Usage Guidelines” section for
more information.
vlan vlan_id (Optional) Displays entries for a specific VLAN; valid values are from 1
to 4094.