Chapter 18
| Address Table Commands
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show mac-address-
table
This command shows classes of entries in the bridge-forwarding database.
Syntax
show mac-address-table [address mac-address [mask]] [interface interface]
[vlan vlan-id]
[sort {address | vlan | interface}]
mac-address - MAC address.
mask - Bits to match in the address.
interface
ethernet unit/port
unit - Unit identifier. (Range: 1-8)
port - Port number. (Range: 1-28/52)
port-channel channel-id (Range: 1-16)
vlan-id - VLAN ID (Range: 1-4094)
sort - Sort by address, vlan or interface.
Default Setting
None
Command Mode
Privileged Exec
Command Usage
◆ The MAC Address Table contains the MAC addresses associated with each
interface. Note that the Type field may include the following types:
■
Learn - Dynamic address entries
■
Config - Static entry
■
Security - Port Security
◆ The mask should be hexadecimal numbers (representing an equivalent bit
mask) in the form xx-xx-xx-xx-xx-xx that is applied to the specified MAC
address. Enter hexadecimal numbers, where an equivalent binary bit “0” means
to match a bit and “1” means to ignore a bit. For example, a mask of 00-00-00-
00-00-00 means an exact match, and a mask of FF-FF-FF-FF-FF-FF means “any.”
◆ The maximum number of address entries is 16K.
Example
Console#show mac-address-table
Interface MAC Address VLAN Type Life Time
--------- ----------------- ---- -------- -----------------
CPU 00-E0-00-00-00-01 1 CPU Delete on Reset
Eth 1/ 1 00-E0-0C-10-90-09 1 Learn Delete on Timeout
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