Kodi Fast Efaneti luso

Kwa nthawi yaitali maukonde desyatimegabitnaya ndi njira yokhayo kulumikiza makompyuta a. Ngakhale njira imeneyi anali zingapo zochititsa (pulagi-terminators, mbendera kugunda, zofanana yoweyula impedance), ndi ambiri ofala. Zipangizo anali zimakhalanso zotsika mtengo unsembe - losavuta, ndi liwiro 1,25 MB / s suti aliyense. Komabe, buku deta opatsirana kupeza zazikulu chaka chilichonse, ndi zofunika maukonde hardware omangika. Choncho, zaka 90 m'malo chisankho chakale anabwera luso Fast Efaneti. atatengedwa kupita ku nkhani, Intaneti "matenda ubwana" 10 Mbit zimagonjetsedwa mu chitukuko cha zofuna za owerenga opanga.

Fast Efaneti. mafotokozedwe

Nthawi ya kubadwa kwa 1992 tinganene kuti chaka luso. Zinali ndiye kuti gulu la makampani chinkhoswe mu chilengedwe zida mgwirizano, kuphatikizapo 3Com, SYNOptics ndi ena angapo analenga wapadera olowa kucheza amatchedwa "Fast Efaneti Alliance". ntchito zake zikuphatikiza ndi kusanthula zochitika za opanga zosiyanasiyana angagwiritsidwe ntchito kulenga mkulu-liwiro deta kufala njira. Komanso, mfundo za mapangidwe ndi kufala kwa mapaketi deta siziyenera kukhala osiyana kwambiri pa Intaneti 10 megabit. Izi kunali kofunika kukhalabe ngakhale kupeza CSMA / CD.

Mu chaka chomwecho mu IEEE Mfundo Association unakhazikitsidwa, amene ntchito anali kuphunzira anapereka makampani njira mwayi 100 megabit. Choncho anayamba makampani covert atasemphana ndi zochitika zawo. Lililonse mapulogalamu anafuna kuonetsetsa kuti anali maganizo ake anavomerezedwa kukhala muyezo.

Chifukwa, monga zambiri choncho, anthu ambiri anali ndi nsembe ndi kukondera a. Mwachitsanzo, akufuna 100VG-AnyLAN luso ku HP ndi AT & T, yomwe zipangizo mfundo zatsopano za mwayi Kuuza Patsogolo, anakanidwa chifukwa sanali m'mbuyo-yogwirizana ndi wogwila njira 10Base.

The chifukwa cha ntchito anali kuzindikira mu 1995 100-megabit njira Fast Efaneti muyezo lakuti 802.3u.

Features

Chachikulu kusiyana pakati Fast Efaneti kuchokera kuloŵedwa m'malo - 10 Mbps Base-T - anali kusintha kukhazikitsa thupi.

Kuwonjezera ngakhale ndi njira yapita, ubwino waukulu njira imeneyi ndi:

- kuwonjezeka mlingo deta kuti 12,5 Mbytes / s (yemweyo 100 Mbps);

- kugwiritsa ntchito mwayi mwachisawawa;

- n'zotheka kutsatira njira ochiritsira, chifukwa ntchito anasunga kulenga Intaneti nyenyezi woboola pakati, ndipo angagwiritsidwe ntchito chakale wochititsa: zopotoka awiri ndi CHIKWANGWANI.

Popeza mtundu wa Fast Efaneti deta mapaketi ndodo wakhala yemweyo, n'zotheka kukwaniritsa pafupifupi m'mbuyo ngakhale. Choncho, ngakhale tsopano, njira yonse maukonde 100 Mbps ndipo ngakhale 1 gigabit kupereka 10 Mbps mode (kuti angathe kukakamiza mu dalaivala).

Komabe, pali kusiyana. Mwachitsanzo, chimango kufala intervals nthawi akhala yafupika ndi pafupifupi 10 nthawi (zoona, n'zotheka kuti apindule ndi mkulu liwiro).

Features zigawo

Monga njira Efaneti, musagwiritsire ntchito chingwe coaxial, 100 Mbps Fast Efaneti amafuna kugwirizana kwa malekezero onse a nthambi za amalandira. Izi zikhoza kukhala maukonde makadi makompyuta, Aang'onoang'ono ndi likulu (likulu). Pa mzere kutalika malire chikangoperekedwa malingana ndi mtundu wa kondakitala. Choncho, zopotoka awiri chachisanu gulu kololeka mtunda mamita 100, koma amalola ntchito CHIKWANGWANI mamita 400 (theka duplex) 2 Km.

Ngakhale chiwerengero cha repeaters (repeater) amadziwikanso okha, izo sizitanthauza kuti chilengedwe Intaneti zovuta za Mipikisano doko dera ndi zipangizo zimenezi.