100BaseVG

100BaseVG
100VG-AnyLAN

   <networking> A 100 {MBps} {Ethernet} standard specified to run
   over four pairs of {category 3} {UTP} wires (known as voice
   grade, hence the "VG").  It is also called 100VG-AnyLAN
   because it was defined to carry both {Ethernet} and {token
   ring} {frame} types.

   100BaseVG was originally proposed by {Hewlett-Packard},
   ratified by the {ISO} in 1995 and practically extinct by 1998.

   100BaseVG started in the IEEE 802.3u committee as {Fast
   Ethernet}.  One faction wanted to keep {CSMA/CD} in order to
   keep it pure Ethernet, even though the {collision domain}
   problem limited the distances to one tenth that of {10baseT}.
   Another faction wanted to change to a polling architecture
   from the hub (they called it "demand priority") in order to
   maintain the 10baseT distances, and also to make it a
   {deterministic} {protocol}.  The CSMA/CD crowd said, "This is
   802.3 -- the Ethernet committee.  If you guys want to make a
   different protocol, form your own committee".  The IEEE 802.12
   committee was thus formed and standardised 100BaseVG.  The
   rest is history.

   (1998-06-30)