ComputersNetwork

LVS - ib tug technology ntawm cov tam sim no

Tam sim no ib tug heev loj ntau computer tes hauj lwm. Nrog lawv, cov neeg siv yuav ua hauj lwm nrog tib pab, cov kev pab cuam, cov ntaub ntawv, ncaj qha los ntawm lawv tus kheej workstation.

Yuav ua li cas yog ib tug LAN?

Feem ntau hom ntawm tes hauj lwm - lub zos cheeb tsam tes hauj lwm.

LVS - ib tug computer network txuas lub zos tshuab cov neeg siv yog cov nyob rau ib co deb ntawm txhua lwm yam. Txawm hais tias ntau yam ntawm lub network mus txog ob peb kilometers, nws yog feem ntau yog siv rau kev twb kev txuas ntawm computers nyob rau hauv ib tug me me deb. Feem ntau, qhov no ua hauj lwm tshuab ntawm ib tug enterprise los yog lub tsev PCs.

configuration ntawm LAN

Configuration tej zaum yuav hais LANs thiab neeg rau zaub mov tswj tsis muaj ib tug (sib npaug zos).

Phooj ywg hauv zos network

Nyob rau hauv xws tes hauj lwm, tag nrho cov computers yog zoo xws li cov nyob rau hauv cov nqe lus ntawm specifications. Peer-to-LAN - ib lub zos network nyob rau hauv uas txhua workstation yuav ua tau tag nrho cov muaj zog ntawm ob thov kev pab thiab neeg rau zaub mov. Rau npaum load balancing nyob rau hauv ib tug xov tooj ntawm koom computer LAN tsis tau ntau tshaj li 10. Txwv tsis pub, tag nrho network kev kawm txom nyem.

Network tswj neeg rau zaub mov (multilevel)

Nyob rau hauv xws li ib tug LAN yog ib tug ntawm cov computers yog txawv kev kawm zoo, nco peev xwm, thiab lwm yam kev ntsuas. Qhov no PC yog muab los ntawm cov neeg rau zaub mov. Servers nyob rau LAN - yog computers rau siab kawm thiab loj tau nco piv rau cov neeg siv lub zos tshuab. Nws yog nws leej twg muab cov interface rau lwm computers rau lub network, khw muag khoom noj thiab npaaj pej xeem cov ntaub ntawv mus saib tau lawv, hau cov ntaub ntawv mus rau tus neeg nyob rau hauv daim ntawv ntawm cov ntaub ntawv rau cov txheej txheem los yog thaum kawg. LAN, nyob rau hauv uas lub neeg rau zaub mov yog tsuas yog siv kom haum raws li ntau cov ntaub ntawv, hu ua tes hauj lwm nrog ib tug siab cov ntaub ntawv neeg rau zaub mov. Nrog rau tej tshuab, muaj ib tug LAN, nyob rau hauv uas lub neeg rau zaub mov yog tseem nqa tawm thiab ua tej ntaub ntawv, thiab tus neeg tau txais tsuas yog tus tshwm sim. Qhov no thiaj li hu ua neeg neeg rau zaub mov systems.

LAN topology

Tag nrho cov computers nyob rau hauv network ntawm lub cev qib yog interconnected. LAN topology - ib txoj kev mus cuag lub zos tshuab. Tam sim no LANs tebchaw yog siv xws txoj kev raws li ib tug lub tsheb npav, lub hnub qub, thiab lub nplhaib.

chaw tos tsheb loj topology

Nyob rau hauv lub LAN, uas lub rooj sib txoos yog npaj raws li no topology yog siv nyob rau hauv lub rooj sib txoos muaj ib zaug xwb cable, koom zos computer siv. Yog li, cov ntaub ntawv los ntawm ib tug tshuab mus ntawm tag nrho cov lwm tus neeg. Lub workstation, uas yog nyob rau cov ntaub ntawv, xaiv lub Desired ntaub ntawv los ntawm cov kev kwj.

Qhov zoo ntawm ib lub tsheb npav topology LAN:

  • ib tug malfunction ntawm ib lub zos computers yuav tsis cuam tshuam lub lag luam ntawm lwm cov cav tov thiab tes hauj lwm nyob rau hauv kev;
  • ib tug kuj yooj yim configuration thiab tsim ntawm tus LAN;
  • lub kuj tsis tshua muaj nqi ntawm consumables (nrog ib tug me me puag ncig ntawm kev txiav txim, piv txwv li, nyob rau hauv tib lub koom haum).

Tsis zoo topology:

  • Cable kev puas tsuaj sim network nyob rau hauv general;
  • tsawg ntau yam thiab ob peb cov neeg siv;
  • ib tus me ceev (nyob ntawm seb tus xov tooj ntawm computers nyob rau hauv network).

"Star" topology

Lub topology ntawm no zoo yuav tus sis ntawm cov zos computers ntawm network khoom (hub los yog hub) uas muab ib tug thaum uas tig mus kev twb kev txuas ntawm ua hauj lwm tov. Txhua qhov chaw nres tsheb yog kev cob cog rua rau ib tug tswv tsev ntaus ntawv los ntawm ib tug nyias muaj nyias ib cable network card. Raws li nyob rau hauv lub yav dhau los hauv daim ntawv ntawm topology, cov ntsaws cov ntaub ntawv yog muaj rau tag nrho cov computers rau cov network, thiab yuav tsuas tau txais los ntawm tus neeg siv rau cov uas lawv yog npaj.

Cov kev pab cuam topology:

  • tsis ntawm tso ib tug tshiab txoj hauj lwm;
  • high efficiency;
  • ceev txhaum los yog cable so;
  • nyob rau hauv cov lag luam ntawm lub network tsis cuam tshuam rau kev txhaum ntawm ib tug neeg hauv zos cov cav tov.

Tsis zoo topology:

  • tsis ua hauj lwm ntawm lub hauv paus unit nres lag luam tag nrho network;
  • lub xov tooj ntawm cov neeg siv yog txwv tus naj npawb ntawm ports ntawm lub hauv paus unit;
  • uneconomical noj nyob rau hauv cable;
  • nrhiav nqi Hub (los yog lwm yam network khoom).

Topology "nplhaib"

LAN installation uas yog ua raws li cov kev cai ntawm no hom ntawm topology, xws li ib tug series ntawm interconnected ua hauj lwm cov cav tov, txoj kev ua ib lub nplhaib. Cov ntaub ntawv nyob rau hauv cov ntaub ntawv no yog los ntawm ib lub computer mus rau lwm lub, thiab nyob rau hauv lub fact tias lawv no.

Zoo topology "nplhaib":

  • Yog tsis muaj nqi rau network khoom (hub, router);
  • muaj peev xwm mus hloov cov ntaub ntawv ntawm cov ntau yam computers ib txhij.

Tsis zoo topology:

  • qhov kev kawm ntawm cov tag nrho lub network yog nyob rau ntawm cov kev ceev ntawm txhua computer;
  • Rhuav cable los yog tsis ua hauj lwm ntawm ib lub computer yog muab tub lag luam thoob plaws hauv lub network;
  • lub complexity ntawm lub teeb thiab configuration;
  • Lub koom haum ntawm hauj lwm tshiab ib lub sij hawm ua kom xiam hoob khab ua hauj lwm ntawm lub LAN.

Lub topology ntawm lub "nplhaib" yog yuav luag yeej tsis siv nyob rau hauv kev xyaum vim hais tias ntawm cov kev insecurity, tab sis yog kev kawm mus rau ntau yam kev hloov kho.

Tam sim no, zoo tsis muaj lub koom haum yuav ua tau yam uas tsis muaj LAN. Ntau ntau "lub hnub qub" network topology vim lawv muaj kev cia siab thiab kev txhaum kam rau ua. LAN topology "nplhaib", los ntawm contrast, tsis tau raws li niaj hnub noj qab haus huv thiab kev nyab xeeb ntsuas. Txawm li cas los, cov LAN raws li ib tug tag nrho tau ua ib feem ntawm peb lub neej thiab pab txhawb kom cov hauj lwm zoo ntawm tej enterprise.

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