100BaseVG


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100BaseVG

(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.
References in periodicals archive ?
A similar, rival standard is 100BaseVG (Voice Grade), backed by Hewlett-Packard, IBM and AT&T.
The other technologies that integrators believe will follow these three by 1997 include switched ethernet (today's number one choice), 100baseVG, full-duplex ethernet and fibre channel, a high-speed channel (with a British spelling) that uses fiber optic technology and a variety of cable types to interconnect computing devices in small network configurations at speeds of up to 1 gigabit per second.
ODS), (NASDAQ-NMS: ODSI) announced several new hub modules that will support the 100BaseVG fast Ethernet standard.
The modules will be compatible with all ODS Infinity Hubs and will offer 10 Mbps Ethernet customers an impressive and cost-effective migration path to the 100BaseVG specification.
Modules offered will include an 18 port user card with RJ45 connectors and a 100BaseVG management module with full SNMP and RMON support.
The 1094-VG18 100BaseVG Ethernet module supports 18 users via RJ45 connectors and one optional port module supporting an AUI, 100BaseVG, or 10BaseFL connector.
ODS' solution provides more 100BaseVG user ports than any other vendor on the market today," said Joe Head, Senior Vice President ODS.