Skip to content

Networktraining

IT Education news, guides and ideas from Networktraining

Tuesday, November 3, 2026

Search

switch MAC address table

1

story in this section

  • Ethernet and MAC Addresses

    Ethernet and MAC Addresses

    What is a MAC address? It is a unique identifier that a manufacturer assigns to a network interface controller (NIC). It is 48 bits long and identifies a device on the local network, not across the internet. A laptop is plugged into an office switch, and a colleague asks which address the switch reads when…