How does a switch learn MAC Addresses

Hello Mohammad

Yes, all switches have a MAC address. How this MAC address is implemented depends on the vendor. Some switches have the same MAC address on all ports. Cisco switches have a different MAC address on each port and one main MAC address that refers to the switch itself. These MAC addresses are only used for traffic that is destined to or generated from the switch itself. For traffic from one PC to another for example, these MAC addresses don’t play any role.

Some specific uses for the MAC addresses of switches include:

* terminating traffic to and from the switch itself
* determining the root bridge when using STP

I hope this has been helpful!

Laz