Puas yog VLANs nce kev tshaj tawm xov xwm?
Puas yog VLANs nce kev tshaj tawm xov xwm?

Video: Puas yog VLANs nce kev tshaj tawm xov xwm?

Video: Puas yog VLANs nce kev tshaj tawm xov xwm?
Video: Luag puas hlub koj - Mang Vang [Official Music Video] 2022 2024, Tej zaum
Anonim

VLAN nce qhov loj ntawm tshaj tawm cov domains tab sis ua tsis txo tus naj npawb ntawm kev sib tsoo domains -> D tsis yog lawm. VLANs nce tus lej ntawm tshaj tawm cov domains thaum txo qhov loj ntawm cov tshaj tawm cov domains uas nce kev siv cov kev sib txuas.

Ua raws li qhov no, puas VLANs rhuav tshem cov npe tshaj tawm?

A VLAN raug kho zoo li nws tus kheej subnet lossis tshaj tawm tus sau , uas txhais tau hais tias thav ntawv tshaj tawm mus rau hauv lub network tsuas yog hloov ntawm cov chaw nres nkoj logically pawg hauv tib yam VLAN . Ua ntej VLAN cov , peb muaj hubs rau txhua pem teb txuas nrog lub router, uas rhuav tshem cov domains rau txhua pem teb.

Ib sab saum toj no, txoj kev tshaj tawm xov xwm thiab VLANs cuam tshuam li cas? Tshaj tawm cov domains tam sim no yog cov chaw muaj kev sib txuas nrog "virtual choj" hauv cov cuab yeej. Txhua tus choj virtual teeb tsa hauv LAN hloov chaw tsim kom muaj qhov sib txawv tshaj tawm tus sau , los yog VLAN . Ncej los ntawm ib qho VLAN tsis tuaj yeem hla ncaj qha mus rau lwm tus VLAN ntawm LAN hloov (lossis lwm yam koj tsim ib qho loj VLAN los yog tshaj tawm tus sau ).

Qhov thib ob, VLANs puas tsim cov ntawv tshaj tawm?

A VLAN yog ib qho laj thawj tshaj tawm tus sau uas tuaj yeem hla ntau ntu LAN lub cev. A VLAN tuaj yeem tsim los muab kev ywj pheej tshaj tawm cov domains rau cov chaw nres tsheb logically segmented los ntawm kev ua haujlwm, pab pawg ua haujlwm, lossis cov ntawv thov, tsis hais txog cov neeg siv lub cev qhov chaw.

Puas yog VLAN yog qhov sib tsoo?

VLANs tsis muaj dab tsi ua nrog kev sib tsoo domains . Rau qib CCNA koj yuav tsum paub tias hauv cov keyboards txhua qhov chaw nres nkoj muaj nws tus kheej kev sib tsoo domain (Switches nce tus naj npawb ntawm kev sib tsoo domains thiab txo qhov loj ntawm kev sib tsoo domains ).

Pom zoo: