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• Every computer has a unique way
of identifying itself : MAC address or physical
address.
• The physical address is located
on the Network Interface Card (NIC).
• MAC addresses have no
structure, and are considered flat address spaces.
It has 48 bits the first 24 bits
are for the vendor and the next 24 bits are unique NIC
number.
• MAC addresses are sometimes
referred to as burned-in addresses (BIAs) because
they are burned into read-only
memory (ROM) and are copied into random-access
memory (RAM) when the NIC
initializes.
• 0000.0c12.3456 or
00-00-0c-12-34-56
MAC address are used by MAC layer
to identify the destination.
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