PLANET WGSW-52040 - Manual (Page 308)

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If enable port-security, private-vlan, mac-notification, mac-limit, etc., it should enable MAC learning through CPU
first.
Example:
Enable MAC learning through CPU.
Switch(Config)#mac-address-learning cpu-control
18.1.4 mac-address-table aging-time
Command:
mac-address-table aging-time <0 | aging-time>
no mac-address-table aging-time
Function:
Sets the aging-time for the dynamic entries of MAC address table.
Parameter:
is the aging-time seconds, range from 10 to 1000000; 0 to disable aging.
Command Mode:
Global Mode.
Default:
Default aging-time is 300 seconds.
Usage Guide:
If no destination address of the packets is same with the address entry in aging-time, the address entry will get aged.
The user had better set the aging-time according to the network condition, it usually use the default value.
Example:
Set the aging-time to 600 seconds.
Switch(config)#mac-address-table aging-time 600