Ethernet (IEEE 802) Address Format

• G/L bit:

  • Global: unique worldwide; assigned by IEEE
  • Local: Software assigned

• G/I: bit:

  • I: unicast address
  • G: multicast address
  • Eg: Multicast = “To all bridges on this LAN”
  • All 1s => Broadcast = “To all stations”

10111101

G/L bit

(Global/Local)

G/I bit

(Group/Individual)

OUI

(Organizationally Unique ID)

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