Ethernet v2 framing, also known as DIX Ethernet (named after the major participants in the framing of the protocol:
Digital Equipment Corporation,
Intel,
Xerox) interprets the 2-octet field following the destination and source addresses as an
EtherType that immediately identifies an upper-layer protocol. The original version of
IEEE 802.3 changed that field to a length field, with an
IEEE 802.2 header expected to follow that field; in the 802.3x-1997 standard, and later versions of the 802.3 standard, both types of framing are specified.
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