Setting the Aging Time of Dynamic MAC Address Entries
Context
Frequent topology changes result in the switch learning a large number of dynamic MAC addresses, some of which may no longer be in use. You can configure how long these entries remain in the MAC address table before the switch deletes them. A shorter aging time is suitable if the topology changes frequently, whereas a longer aging time is suitable if the topology remains stable.
Procedure
- Run system-view
The system view is displayed.
- Run mac-address aging-time aging-time
The aging time is set for dynamic MAC address entries.
The aging time is 0 or an integer from 10 to 1000000, in seconds. The value 0 indicates that dynamic MAC address entries will not be aged out. The default value is 300.
If the aging time is set to 0, MAC address entries become fixed and never age out. To clear these entries, set the aging time to a non-0 value. The system then deletes these entries after twice the aging time.