User’s Manual 309
Usage Guidelines
The MAC Address Table contains the MAC addresses associated with each interface. Note that the Type
field may include the following types:
• Learned - Dynamic address entries
• Permanent - Static entry
• Delete-on-reset - Static entry to be deleted when system is reset
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 8191.
Example
The following is sample output from the show mac-address-table command.
Console#show mac-address-table
Interface Mac Address Vlan Type
--------- ----------------- ---- -----------------
Eth 1/ 1 00-e0-29-94-34-de 1 Delete-on-reset
Console#
16.171 show mac-address-table aging-time
This command shows the aging time for entries in the address table.
Default
None
Command Mode
Privileged Exec
Example
The following is sample output from the show mac-address-table aging-time command.
Console#show mac-address-table aging-time
Aging time: 300 sec.
Console#
16.172 show mac-address-table multicast
This command shows known multicast addresses.
Syntax Description
show mac-address-table multicast [vlan vlan-id] [user | igmp-snooping]
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