48 bits (6 bytes in Hex).
MAC Fields
| Bit Range | Field Name | Decimal | Hex | Info |
|---|---|---|---|---|
| 47 (1 Bit) | Individual/Group (Broadcast) | 0 |
1 Indicates this MAC Address is a Broadcast or Multicast Address 0 Means this is a Device Address. |
|
| 46 (1 Bit) | Global/Local OUI | 0 |
1 Indicates this is a locally governed OUI Address 0 Globally Administered IEEE OUI Address. |
|
| 45-24 (22 Bits) | OUI (Organizationlly Unique Identifier) | 0 | 0 | Company ID. Assigned by IEEE. |
| 23-0 (24 Bits) | Vendor/Maufacturer Assigned ID | 0 | 0 | Usually NIC SN. |
Link to lookup OUI at IEEE
http://standards.ieee.org/develop/regauth/oui/public.html
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