Configuration Guide Configuring MAC Address
A device only learns a limited number of MAC addresses, and inactive entries are deleted through address aging.
A device starts aging a MAC address when it learns it. If the device receives no packet containing the source MAC address,
it will delete the MAC address from the MAC address table when the time expires.
 Forwarding via Unicast
If a device finds in its MAC address table an entry containing the MAC address and the VLAN ID of a packet and the output
port is unique, it will send the packet through the port directly.
 Forwarding via Broadcast
If a device receives a packet containing the destination address ffff.ffff.ffff or an unidentified destination address, it will send
the packet through all the ports in the VLAN where the packet is from, except the input port.
2.4 Configuration
Configuring Dynamic MAC
Address
(Optional) It is used to enable MAC address learning.
mac-address-table aging-time
Configures an aging time for a dynamic
MAC address.
Configuring a Static MAC
Address
(Optional) It is used to bind the MAC address of a device with a port of a switch.
Configures a static MAC address.
Configuring a MAC Address
for Packet Filtering
(Optional) It is used to filter packets.
mac-address-table filtering
Configures a MAC address for packet
filtering.
Configuring MAC Address
Change Notification
(Optional) It is used to monitor change of devices connected to a network device.
mac-address-table notification
Configures MAC address change
notification globally.
snmp trap mac-notification
Configures MAC address change
notification on an interface.
2.4.1 Configuring Dynamic MAC Address
Configuration Effect
Learn MAC addresses dynamically and forward packets via unicast.
Configuration Steps
 Configuring an Aging Time for a Dynamic MAC Address
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