1. MAC Learning:
When a switch receives a frame, it learns the source MAC address and the port it arrived on, adding this information to the table.
2. Forwarding:
When a frame arrives with a destination MAC address found in the table, the switch forwards it directly to the corresponding port.
3. Flooding:
If the destination MAC address is not in the table, the switch floods the frame to all ports in the VLAN (except the incoming port).
4. Aging:
Dynamic MAC address entries are typically aged out after a certain period (defaulting to 300 seconds) if they are not used.
Transparent bridging uses five mechanisms to create and maintain Ethernet switching tables on the switch:
Learning
Forwarding
Flooding
Filtering
Aging
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