Yog hais tias koj muaj kev nkag tau mus rau hauv Internet los yog rau tej cheeb tsam network router (aka ib router) tej zaum yuav yog ib tug ntawm lub ntsiab Cheebtsam uas muaj kev cob cog rau lub computer. Nws muaj peev xwm sawv ntawm ib tug ceev ceev kev twb kev txuas mus rau koj lub tsev network rau cov sab nraud. Qhov no ntaus ntawv tso cai rau tag nrho cov ntaub ntawv los ntawm tus kws kho mob propagating uniformly muab tso rau hauv tag nrho cov computers network. Nyob rau hauv cov ntaub ntawv no, lub router yuav siv sij hawm nyob rau hauv qhov tseem ceeb ua hauj lwm ntawm kom qhov kev ruaj ntseg ntawm tus txheej txheem. Yog li ntawd, peb saib yog dab tsi yog ib tug router?
Lub router yog siv los txuas rau lub ntiaj teb no tes hauj lwm, uas ntau npaum mus faib tsheb thiab siv lwm txoj kev nyob nruab nrab ntawm network ntshav. Yog li, lub hom phiaj tseem ceeb ntawm lub router yog lub lwm qhov kev pab paths thiab kuj union ntawm txawv tes hauj lwm.
Vim li cas kuv xav tau ib tug router?
Nyob qhov twg lub router yuav siv, nws nyob nkaus rau yuav ua li cas nws yog txawm peem rau nrog tus naj npawb ntawm ports. Piv txwv li, nws yuav siv tau nyob rau hauv lub zos, zoo tswj tsheb thaum nws los txog rau mas segmented network. Nrog rau qhov no ntaus ntawv yuav ua kev cob cog rua Ethernet hom network nrog lwm yam, thiab yuav tau muab kev sib txuas lus nrog lub ntiaj teb no network.
Tab sis hais tias tsis yog tag nrho cov, nyob rau cov nqe lus nug, yog dab tsi lub router. Cov pab kiag li lawm yog tsis tau tsuas yog txuam nrog lub ntiaj teb no network, los yog mus rau txhua lwm yam. Lawv kuj nqa tawm tsheb tswj nyob rau hauv network txheej raws tu qauv, uas yog, ib theem uas yog ho siab tshaj tus tes hloov qhov. Xws li ib tug router yog tsim nyog thaum tswj ua complexity ntawm network topology, raws li zoo raws li vim qhov kev nce rau hauv lub xov tooj ntawm ntshav. Lub network yog lub koom haum los ntawm ib tug ntau txoj kev los ntawm cov uas mus npaj lub feem ntau high-zoo thiab ceev ceev tus me nyuam ntawm tej yam lus qhia packets. Yog li ntawd, yog tias ib lo lus nug ntawm yog dab tsi yog ib tug router, nws yuav ntau dua los yog tsawg ntshiab, nws yog tsim nyog nyob rau hauv kev kawm ntawm "routing twg". Lawv muaj ob theem pib: OSPF thiab RIP. Thaum uas siv cov thawj yuav tau xav txog tsis tsuas lub xov tooj ntawm pab kiag li lawm ntawm ntshav, tab sis kuj ua tau zoo ntawm cov network, thiab pob ntawv kis tau tus mob ncua, thiab lwm yam tsis. Qhov no hom ntawm raws tu qauv siv nyob rau hauv loj tes hauj lwm, uas yuav tsum tau ib tug tham routers, kev khiav hauj lwm nyob rau hauv lub hauv paus ntawm haib processors. Nyob rau hauv lub thib ob xaiv ntawm qhov zoo tshaj txoj kev yuav ua li cas rau ib tug tsawg kawg nkaus naj npawb ntawm cov network pab kiag li lawm ntawm cov ntshav. Configuring nyob rau hauv cov ntaub ntawv no yuav yooj yim, thiab lub router yog loaded nrog heev me ntsis.
Yog li ntawd, yog tias ib lo lus nug ntawm yog dab tsi yog ib tug router, koj ua kom meej, ces peb yuav tau muab siv nws nyob rau hauv tsev. Lub tsev network los ntawm lub router yog lub union ntawm computers nyob rau hauv ib lub zos network, thaum muab lawv nkag mus rau hauv Internet network. Feem ntau, xws li yog nruab nrog plaub ports uas muaj peev xwm txuas rau lawv 4 computer. Thiab yuav muaj ib lo lus nug: "WiFi-router, yog dab tsi?". Qhov no hom ntawm routers lwm tshaj lub ports, thiab ntxiv nruab nrog antennas uas tso cai rau computers ua xov tooj cua nkag network. Nws hloov tawm hais tias lub xub ntiag ntawm pab kiag li lawm nrog Wi-nkaus-module, koj tsis tas yuav mus cuag nws mus rau lub router los ntawm ib tug pa network cable, siv lub built-txaus.
Yog li ntawd tam sim no koj paub tias dab tsi yog ib tug router.