802.3 Ethernet MAC Layer Frame

• Tag Control Information (TCI) (2 Octets)

  • Gives specific tagging information
  • Three priority bits (000 to 111)
  • Eight priority levels, with 111 being high
  • 12-bit VLAN ID (see Chapter 8)
  • One bit canonical form indicator (rarely used)

Pre

SFD

DA

SA

Len

Data

PAD

FCS

TPID

TCI

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