Eternet Addressing

Eternet Addressing

1. MAC Address

   • Burned into each and every Ethernet NIC.
   • 6 Byte Address written in Hex.
     • First 24 bits
       • I/G
         • If it has a value of 0 we can assume that the address is the MAC address of a device.
           • May appear in the source portion of the MAC header
         • If it has a value of 1 it represents a boardcast or multicast address
       • G/L
         • When set to 0, it means it is a globally administered address by the IEEE
         • When set to 1, it represents a locally governed and administered address.
       • OUI
         • Assigned by the IEEE to an organization.
     • Second 24 bits
       • Vendor Assigned