Allied Telesis AT-9000 Series - Manual (Page 102)

Chapter 8: Setting the MAC Address
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3. Do one of the following:
 To clear all of the static multicast addresses in the MAC address
table, click Clear Static.
 To clear all of the dynamic multicast addresses in the MAC
address table, click Clear Dynamic.
4. Click SAVE.
 To delete a specific MAC address, click Delete next to the MAC
address that you want to delete.