Windows Networking Tools

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WindoWs netWorking tools

3.1.1.1.1.3 Source Address Field e Source Address field iden-

tifies the station that transmitted the frame. Similar to the destination

address, the Source Address field is 6 bytes in length, with the first 3

bytes (actually the last 24 bits in the first three bytes) assigned initially

by Xerox and later by the IEEE to the manufacturer for incorpora-

tion into each NIC’s ROM. e vendor then normally assigns the last

three bytes to each of its NICs or chip sets so that each 46-bit address

is unique. Because the first three bytes are assigned to manufactur-

ers, another term used to reference this subfield is the Manufacturer

subfield.

3.1.1.1.1.4 Type Field e 2-byte Type field was used by Xerox

and later the DIX consortium ...