Definition

Media Access Control Used on devices like

MAC

• 48 bits length
• First 24 bits are OUI (Organisational Unique Identifier) field
• The 7th most significant bit is called UL (Universal Local) bit –> this MAC addr is universally unique

Structure

Broadcast

• Has DST MAC = FFFFFFF…
• != “Flood” (Unicast: 1:1)
• 1:n
• Sent to everybody on purpose