Yuav ua li cas yog lub hub thiab yuav ua li cas nws ua hauj lwm?

Hub - ib tug sab heev tswvyim. Nws yog siv tsis tau tsuas yog nyob rau hauv lub network terminology. Tsis tas li ntawd, piv txwv li, muaj yog lub tswvyim ntawm ib tug USB hub. Qhov no ntaus ntawv, uas Nws yog siv los txuas rau ib tug tib qhov chaw nres nkoj ntawm ib tug xov tooj ntawm txawv USB-pab kiag li lawm. Tab sis qhov no yog tsis tag nrho cov ntau yam ntawm possibilities ntawm daim ntawv thov ntawm concentrators ntawm cov xwm sib txawv.

Nyob rau hauv kev tsim tej cua ntsawj ntshab teeb meem tshwm sim ua ntej los yog tom qab nyob rau hauv cov ntaub ntawv ya mus ua ke ib yam tus naj npawb ntawm cais cov ntaub ntawv ua kiag li lawm. Qhov teeb meem no yuav yooj yim solved kom lub tsev network. Yuav kom siv no ua hauj lwm, muaj cov heev ib tug xov tooj ntawm technologies. Pib npaj rau kev tsim kho ntawm nws cov network, koj yuav tsum tam sim ntawd seb zoo li cas rau aggregate ntaub ntawv txaus pab kiag li lawm yuav tsum tau siv nyob rau hauv tus txheej txheem ntawm kev tswj cov operability ntawm network kev sib txuas. Lub network hub (hub) - yog ib tug ntawm xws kiag li lawm.

Lub ntsiab qhov txawv feature ntawm tus tes hloov qhov, uas muaj ib tug hub - nws yog ib tug feature ntawm broadcasting cov ntaub ntawv ntws. Nws muaj tag nrho cov ports muaj cai ib yam nkaus. Yog li ntawd, cov ntaub ntawv txaus tau txais los ntawm ib tug ntawm lawv, nws muab nws cov los tso rau tag nrho lwm cov active ports. Roughly hais lus, to taub li cas cov hub, nws yog tsim nyog los nkag siab txog nws cov essence. Qhov no repeater tsim rau ib tug loj tus naj npawb ntawm ports thiab muaj ib tug pab tau nuj nqi avtosegmentatsii. Avtosegmentatsiya - yog ib tug txheej txheem uas tsis siv neeg tswj ntawm lub cov chaw nres nkoj (hloov lwm lub tsev ntawm ib tug ua tsis tau tejyam chaw nres nkoj muab sawv mus rau lwm cov txheej txheem - tshaj tawm qhov chaw nres nkoj tsaug zog). Nyob rau hauv lub neej yav tom ntej, yog hais tias tus txhaum yog muab tshem tawm, qhov chaw nres nkoj dua ua lub active hom.

Qhov no yog cov lus teb rau lo lus nug ntawm yog dab tsi lub hub thiab yuav ua li cas nws txawv ntawm tus tes hloov qhov. Properties hub network yuav ho txhim kho lub zuag qhia tag nrho qib muaj kev cia siab thiab network resiliency. Ntxiv mus, hais tias cov tshuaj ntawm tag nrho cov tshwm sim kev tsis sib haum thiab kom ntseeg tau tag nrho cov tswj lub xeev affiliate channel yog muab ncaj qha mus rau tus ntaus ntawv nws tus kheej tsis muaj ntxiv cov vaj tse, ob qho tib si software thiab kev kho vajtse.

Hubs yuav muab tag nrho nrog txhua lwm yam, uas koj mus tsim ib tug network topologies thiab kiag li kev loj. Tsis tas li ntawd lawv cia ib tug kev twb kev txuas ntawm lub caj qaum, li no siv topology "log". Tab sis hubs muaj ib tug loj drawback: lawv yog cov heev nyob rau hauv lub network topology, qhov uas siv tau, uas yog, yog tsis universal. Yog li ntawd, lawv hom hubs yog muaj rau txhua tus topology.

Nyob rau hauv kev, thaum kawg paub tias xws li ib tug hub, ib tug yuav tsum to taub - nws tso cai rau kom muab ib tug neeg pab kiag li lawm teej tug mus rau lub network rau hauv ib lub ntiaj teb no (es zos) ua hauj lwm pab pawg neeg.

Peb tau sim los nkag siab txog nyob rau hauv nqe lus dav dav li cas rau hauv lub hub thiab "yog dab tsi nws noj thiab haus." Lub versatility thiab sab applicability ua hubs ntau nyob rau hauv hnub no lub NWS ua lag luam. Nrog lawv pab nws yog ua tau los mus daws cov kev sib tw ntawm qhov kev siv ntawm lub computer tes hauj lwm , thiab tsis tsuas yog lawv.