Thawj qhov kev sim ntawm Ethernet wired networking tau khiav ntawm kev sib txuas ceev ntawm 2.94 megabits ib ob (Mbps) hauv xyoo 1973. Thaum lub sijhawm Ethernet tau dhau los ua tus qauv kev lag luam hauv xyoo 1982, nws qhov ntsuas nrawm tau nce mus rau 10 Mbps vim yog kev txhim kho hauv tshuab. Ethernet khaws qhov kev ntsuas ceev tib yam no rau ntau tshaj 10 xyoo. Cov qauv sib txawv ntawm tus qauv tau muaj npe pib nrog tus lej 10, suav nrog 10-Base2 thiab 10-BaseT.
Fast Ethernet
Cov thev naus laus zis hu ua Fast Ethernet tau qhia nyob rau nruab nrab-1990s. Nws khaws lub npe ntawd vim tias Fast Ethernet cov qauv txhawb nqa cov ntaub ntawv siab tshaj plaws ntawm 100 Mbps, 10 npaug sai dua li ib txwm Ethernet. Lwm cov npe rau tus qauv no suav nrog 100-BaseT2 thiab 100-BaseTX.
Ceev Ethernet tau siv dav vim qhov xav tau kev ua haujlwm LAN ntau dua los ua qhov tseem ceeb rau cov tsev kawm qib siab thiab kev lag luam. Lub ntsiab tseem ceeb ntawm nws txoj kev vam meej yog nws lub peev xwm los ua ke nrog cov kev sib txuas uas twb muaj lawm. Mainstream network adapters ntawm hnub tau tsim los txhawb ob qho tib si ib txwm thiab ceev Ethernet. Cov 10/100 adapters no paub cov kab ceev tau txais thiab kho cov ntaub ntawv sib txuas raws li.
Gigabit Ethernet Speeds
Ib yam li Fast Ethernet txhim kho ntawm ib txwm Ethernet, Gigabit Ethernet txhim kho ntawm Fast Ethernet, muab tus nqi nce txog 1000 Mbps. Txawm hais tias 1000-BaseX thiab 1000-BaseT versions tau tsim nyob rau xyoo 1990s lig, nws tau siv ntau xyoo rau Gigabit Ethernet kom ncav cuag qhov loj me me vim nws tus nqi siab dua.
10 Gigabit Ethernet ua haujlwm ntawm 10,000 Mbps. Cov qauv qauv suav nrog 10G-BaseT tau tsim pib txij li xyoo 2000s. Kev sib txuas ntawm cov xov tooj ntawm qhov ceev no tsuas yog siv nyiaj tau zoo hauv qee qhov chaw tshwj xeeb xws li hauv kev suav ua haujlwm siab thiab cov chaw khaws ntaub ntawv.
40 Gigabit Ethernet thiab 100 Gigabit Ethernet thev naus laus zis tau nyob rau hauv kev txhim kho nquag rau qee xyoo. Lawv qhov kev siv thawj zaug yog feem ntau rau cov ntaub ntawv loj. 100 Gigabit Ethernet twb tau hloov 10 Gigabit Ethernet hauv chaw ua haujlwm thiab hauv tsev.
Ethernet Qhov Siab Tshaj Lij Tshaj Lij Tshaj Lij Tiag tiag
Cov kev ntsuas ceev ntawm Ethernet tau raug thuam vim tsis tuaj yeem ua tiav hauv kev siv tiag tiag. Zoo ib yam li cov kev ntsuas roj hluav taws xob ntawm lub tsheb, kev ntsuas kev sib txuas hauv network tau suav nrog hauv cov xwm txheej zoo tshaj plaws uas yuav tsis sawv cev rau ib puag ncig kev ua haujlwm. Nws tsis tuaj yeem dhau qhov kev ntsuas nrawm no vim tias lawv yog qhov muaj txiaj ntsig siab tshaj plaws.
Tsis muaj feem pua lossis cov qauv uas tuaj yeem siv rau qhov ntsuas nrawm tshaj plaws los xam seb qhov kev sib txuas Ethernet yuav ua li cas hauv kev xyaum. Kev ua tau zoo tiag tiag nyob ntawm ntau yam, suav nrog kev cuam tshuam kab lossis kev sib tsoo uas xav tau cov ntawv thov rov xa cov lus.
Vim tias cov txheej txheem network siv qee qhov peev txheej hauv lub network los txhawb cov txheej txheem headers, cov ntawv thov tsis tuaj yeem tau txais 100% rau lawv tus kheej xwb. Nws kuj tseem nyuaj dua rau cov ntawv thov kom sau 1000 Gbps kev sib txuas nrog cov ntaub ntawv dua li sau 100 Mbps kev sib txuas. Txawm li cas los xij, nrog rau cov ntawv thov raug thiab cov qauv kev sib txuas lus, cov ntaub ntawv tiag tiag tuaj yeem ncav cuag ntau dua 90% ntawm qhov theoretical siab tshaj plaws thaum siv lub ncov.
