Mac Address-Table Aging-Time - Cisco Catalyst 2960 Command Reference Manual
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Chapter 2
Catalyst 2960 Switch Cisco IOS Commands
mac address-table aging-time
Use the mac address-table aging-time global configuration command to set the length of time that a
dynamic entry remains in the MAC address table after the entry is used or updated. Use the no form of
this command to return to the default setting. The aging time applies to all VLANs or a specified VLAN.
Syntax Description
0
10-1000000
vlan vlan-id
Defaults
The default is 300 seconds.
Command Modes
Global configuration
Command History
Release
12.2(25)FX
Usage Guidelines
If hosts do not send continuously, increase the aging time to record the dynamic entries for a longer time.
Increasing the time can reduce the possibility of flooding when the hosts send again.
If you do not specify a specific VLAN, this command sets the aging time for all VLANs.
Examples
This example shows how to set the aging time to 200 seconds for all VLANs:
Switch(config)# mac address-table aging-time 200
You can verify your setting by entering the show mac address-table aging-time privileged EXEC
command.
Related Commands
Command
show mac address-table aging-time
78-16882-01
mac address-table aging-time {0 | 10-1000000} [vlan vlan-id]
no mac address-table aging-time {0 | 10-1000000} [vlan vlan-id]
This value disables aging. Static address entries are never aged or removed from
the table.
Aging time in seconds. The range is 10 to 1000000 seconds.
(Optional) Specify the VLAN ID to which to apply the aging time. The range is 1
to 4094.
Modification
This command was introduced.
Description
Displays the MAC address table aging time for all VLANs
or the specified VLAN.
Catalyst 2960 Switch Command Reference
mac address-table aging-time
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