Cisco Nexus 5500 Series Command Reference Manual page 110

mac address-table aging-time
mac address-table aging-time
To configure the aging time for entries in the MAC address table, use the mac address-table aging-time
command. To return to the default settings, use the no form of this command.
Syntax Description
seconds
vlan vlan-id
Command Default 300 seconds
Command Modes Global configuration mode
Command History Release
5.2(1)N1(1)
Usage Guidelines Enter 0 seconds to disable the aging process.
The age value may be rounded off to the nearest multiple of 5 seconds. If the system rounds the value to
a different value from that specified by the user (from the rounding process), the system returns an
informational message.
When you use this command in EXEC mode, the age values of all VLANs for which a configuration has
not been specified are modified and those VLANs with specifically modified aging times are not
modified. When you use the no form of this command without the VLAN parameter, only those VLANs
that have not been specifically configured for the aging time reset to the default value. Those VLANs
with specifically modified aging times are not modified.
When you use this command and specify a VLAN, the aging time for only the specified VLAN is
modified. When you use the no form of this command and specify a VLAN, the aging time for the VLAN
is returned to the current global configuration for the aging time, which may or may not be the default
value of 300 seconds depending if the global configuration of the switch for the aging time has been
changed.
The aging time is counted from the last time that the switch detected the MAC address.
Examples
This example shows how to change the length of time an entry remains in the MAC address table to 500
seconds for the entire switch:
switch(config)# mac address-table aging-time 500
Cisco Nexus 5500 Series NX-OS Layer 2 Interfaces Command Reference
1104
mac address-table aging-time seconds [vlan vlan-id]
no mac address-table aging-time [vlan vlan-id]
Aging time for MAC address table entries. The range is from 0 to 1000000
seconds. The default is 300 seconds. Entering 0 disables MAC address aging.
(Optional) Specifies the VLAN to which the changed aging time should be
applied.
Modification
This command was introduced.
Chapter M Commands
OL-27880-02