100BaseVG

(networking)A 100 MBps Ethernet standard specified to runover four pairs of category 3 UTP wires (known as voicegrade, hence the "VG"). It is also called 100VG-AnyLANbecause 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 tokeep it pure Ethernet, even though the collision domainproblem limited the distances to one tenth that of 10baseT.Another faction wanted to change to a polling architecturefrom the hub (they called it "demand priority") in order tomaintain the 10baseT distances, and also to make it adeterministic protocol. The CSMA/CD crowd said, "This is802.3 -- the Ethernet committee. If you guys want to make adifferent protocol, form your own committee". The IEEE 802.12committee was thus formed and standardised 100BaseVG. Therest is history.

单词	100basevg
释义	100BaseVG 100BaseVG (networking)A 100 MBps Ethernet standard specified to runover four pairs of category 3 UTP wires (known as voicegrade, hence the "VG"). It is also called 100VG-AnyLANbecause 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 tokeep it pure Ethernet, even though the collision domainproblem limited the distances to one tenth that of 10baseT.Another faction wanted to change to a polling architecturefrom the hub (they called it "demand priority") in order tomaintain the 10baseT distances, and also to make it adeterministic protocol. The CSMA/CD crowd said, "This is802.3 -- the Ethernet committee. If you guys want to make adifferent protocol, form your own committee". The IEEE 802.12committee was thus formed and standardised 100BaseVG. Therest is history.
随便看	unnervate unnerve unnerved unnerves unnerving unnervingly unnest unnestle unnethe unnetted unneurotic unneuroticly unnews unnewsworthy u-nni unni unnilbium unnilenium unnilennium unnilhexium unnilnilium unniloctium unnilpentium unnilquadium unnilseptium