Ua ntej tshaj plaws, peb yuav tsum tau qhia meej txog lub tswv yim: nkag mus rau txheej txheej hloov, txheej txheej sib sau ua ke, thiab cov txheej txheem tseem ceeb tsis yog kev faib tawm thiab cov cwj pwm ntawm cov keyboards, tab sis muab faib los ntawm cov dej num lawv ua. Lawv tsis muaj qhov yuav tsum tau ua kom ruaj khov, thiab feem ntau yog nyob ntawm qhov loj ntawm lub network ib puag ncig, lub peev xwm xa tawm ntawm lub cuab yeej, thiab qhov chaw nyob hauv cov qauv network. Piv txwv li, tib txheej txheej 2 hloov yuav siv tau ntawm txheej nkag los yog txheej txheej sib xyaw hauv cov qauv sib txawv. Thaum siv los ntawm txheej txheej nkag, qhov hloov pauv yog hu ua kev nkag mus rau txheej txheej, thiab thaum siv ntawm txheej txheej txheej, qhov hloov pauv yog hu ua txheej txheej sib sau.
Cov yam ntxwv thiab qhov sib txawv ntawm cov txheej txheem nkag, txheej txheej thiab cov txheej txheem tseem ceeb
Cov txheej txheem tseem ceeb tuaj yeem muab kev sib txuas lus zoo sib xws, txheej txheej sib sau ua ke tuaj yeem muab txoj cai sib txuas, thiab txheej txheej nkag tuaj yeem muab cov neeg siv nkag mus rau lub network rau ntau daim ntawv thov kev pabcuam thiab lwm yam kev siv network.
1. Access txheej
TUsually ib feem ntawm lub network uas ncaj qha ntsib tus neeg siv los txuas lossis nkag mus rau hauv lub network yog hu ua txheej txheej nkag, uas yog sib npaug rau cov neeg ua haujlwm hauv paus hauv cov tuam txhab architecture, yog li txheej txheej nkag.hloovmuaj tus nqi qis thiab high-end port ceev tus yam ntxwv.
Cov txheej txheem nkag tau muab cov neeg siv muaj peev xwm nkag mus rau hauv daim ntawv thov system ntawm ntu ntu hauv zos. Cov txheej txheem nkag tau muab cov bandwidth txaus rau kev nkag mus ntawm cov neeg siv nyob sib ze. Cov txheej txheem nkag mus kuj yog lub luag haujlwm rau kev tswj hwm cov neeg siv khoom (xws li chaw nyob authentication thiab user authentication) thiab cov ntaub ntawv sau cov neeg siv (xws li IP chaw nyob, MAC chaw nyob, thiab cov ntawv nkag).
2. Txheej txheej
Aggregation txheej, tseem hu ua txheej txheej, yog "intermediary" ntawm txheej txheej txheej txheej thiab cov txheej txheem tseem ceeb. Nws yog sib npaug rau kev tswj nruab nrab ntawm lub tuam txhab thiab yog siv los txuas cov tub ntxhais txheej thiab txheej txheej nkag. Nyob rau hauv nruab nrab txoj hauj lwm, lub convergence txheej yog ua ua ntej lub workstation nkag mus rau hauv lub core txheej kom txo cov load ntawm cov tub ntxhais txheej pab kiag li lawm.
Nws tsis yooj yim rau kev nkag siab tias txheej txheej sib sau ua ke, tseem hu ua txheej txheej sib sau ua ke, muaj ntau yam haujlwm xws li kev siv cov cai, kev ruaj ntseg, kev nkag mus rau pawg neeg ua haujlwm, routing ntawm virtual cheeb tsam network (vlans), thiab qhov chaw nyob lossis qhov chaw nyob lim. Nyob rau hauv lub aggregation txheej, ahloovuas txhawb Layer 3 hloov tshuab thiab VLAN yuav tsum tau siv los ua kom tiav kev sib cais network thiab segmentation.
3. Core txheej
Cov txheej txheem tseem ceeb yog lub nraub qaum ntawm lub network, uas lav kev ua haujlwm ntawm tag nrho lub network, thiab nws cov khoom siv suav nrogrouters, firewalls, core txheej keyboards, thiab lwm yam, uas yog sib npaug rau cov kev tswj saum toj kawg nkaus hauv cov tuam txhab architecture.
Cov txheej txheem tseem ceeb ib txwm tau suav tias yog qhov kawg tau txais thiab sib sau ua ke ntawm tag nrho cov tsheb, yog li cov txheej txheem tseem ceeb thiab cov khoom siv hauv lub network yuav tsum nruj heev, nws txoj haujlwm yog tsuas yog ua kom tau txais kev pom zoo ntawm kev sib kis ntawm cov pob txha caj qaum, lub pob txha txheej txheej tsim ua haujlwm yog feem ntau yog ua kom pom tseeb ntawm redundancy, kev ntseeg siab thiab kev sib kis ceev. Yog li ntawd, nws yog ib qho tsim nyog rau cov txheej txheem tseem ceeb ntawm cov cuab yeej siv los siv dual-system redundancy kub thaub qab, thiab cov khoom sib npaug tuaj yeem siv los txhim kho kev ua haujlwm hauv network. Kev tswj kev ua haujlwm ntawm lub network yuav tsum tau muab coj los siv rau ntawm lub nraub qaum txheej kom tsawg li sai tau.
Qhov sib txawv ntawm cov txheej txheem nkaghloov, lub aggregation txheejhloovthiab core txheejhloovyog lub ntsiab lus tseem ceeb ntawm kev paub saum toj no. Covhloovhais los saum toj no yog cov khoom siv sib txuas lus kub muag hauv Shenzhen HDV Phoelectron Technology LTD., xws li: Ethernethloov, Fiber Channelhloov, Ethernet Fiber Channelhloov, thiab lwm yam, cov keyboards saum toj no tuaj yeem siv rau hauv ntau qhov chaw, muab kev xaiv ntau rau cov neeg siv khoom sib txawv, txais tos kom nkag siab, peb yuav muab cov kev pabcuam zoo tshaj plaws.
