Changing the MAC age time and disabling MAC address learning

To change the MAC address age timer, enter a command such as the following. 

device(config)# mac-age-time 60
  • On ICX Series devices, you can configure the MAC address age timer to 0 or a value from 60-86400 (seconds). If you set the MAC age time to 0, aging is disabled.
  • If the total MAC addresses in the system is more than 16000, RUCKUS recommends a MAC age timer greater than 60 seconds. If the total MAC addresses in the system is more than 64000, RUCKUS recommends a MAC age timer greater than 120 seconds.
Note: Usually, the actual MAC age time is from one to two times the configured value. For example, if you set the MAC age timer to 60 seconds, learned MAC entries age out after remaining unused for between 60 - 120 seconds. However, if all of the following conditions are met, then the MAC entries age out after a longer than expected duration:
  • The MAC age timer is greater than 630 seconds.
  • The number of MAC entries is over 6000.
  • All MAC entries are learned from the same packet processor.
  • All MAC entries age out at the same time.

In this section:

  1. Disabling the automatic learning of MAC addresses
  2. Displaying the MAC address table
Parent topic: Configuration Fundamentals