 uwng problem opportun in search infinit bandwidth cost 1990-02-19 problem the fibr cabl system level-on network utp cabl system level-three network well posit high-speed transmiss technolog unfortun coax cabl system exist level-two network level-three network function obsolet if stai continu year futur opportun the ethernet multiport repeat marketplac commod 1994 share ethernet utp-connect devic contend 10mbp aggreg capac it obsolet ethernet switch port dedic bandwidth port intern connect multi-bridg bu aggreg bandwidth suffici guarante concurr rate-speed connect pair port medium transmiss type dedic bandwidth categori-5 utp ethernet 10mbp fast ethernet 100mbp cddi fddi 100mbp atm 25mbp 155mbp gigabit ethernet ? 1000mbp multimod singlemod fibr fddi 100mbp gigabit ethernet 1000mbp atm 155mbp 9gbp fast gigabit ethernet 10gbp wave divis multiplex nx10gbp a full-duplex ethernet link singl devic link rather direct traffic direct collis-detect signal send traffic direct concurr the speed the tabl network requir audio motion video paper francoi fluckig cern print januari 1996 edit connexion -- interoper report publish interop compani applic techniqu bandwidth high-definit tv uncompress 2gbp mpeg-2 30mbp studio-qualiti tv mpeg-2 7mbp broadcast-qualiti tv mpeg-2 3mbp vcr-qualiti tv mpeg-1 1 4mbp cd-qualiti audio monophon channel uncompress 728kbp mpeg-audio layer 3 64kbp video conferenc h 261 112kbp gsm 32kbp telephon-grade voic itu g 711 64kbp telephon-grade voic itu g 721 32kbp audio portion video conferenc itu g 728 16kbp telephon-grade voic us 1016 4 8kbp voic internet us 1015 2 4kbp the high-bandwidth applic requir qualiti servic qo facili ethernet evolut 802 1p enabl 8-level prioriti newer ip servic differenti mechan ip to prioriti queu resourc reserv protocol rsvp real-time transmiss protocol rtp ip http ist uwaterloo cn diagram multicast gif multicast none readi prime time also ipv6 gener version ip protocol enhanc mechan standard 1995 20 year ipv6 norm maintain rwwatt uwaterloo 