Англо-русский словарь компьютерных терминов:
100basevg
спецификация кабельной сети Ethernet со скоростью передачи 100 Мбит/с на UTP Категории 3, продвигавшаяся с 1995 г. компаниями Hewlett-Packard и AT&T, практически исчезла к 1998 г
Free On-line Dictionary of Computing:
100basevg
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)
