Static VLAN vs Dynamic VLAN
Virtual Local Area Network (VLAN) yog ib txheej ntawm cov chaw nres nkoj xaiv los ntawm kev hloov pauv raws li koom nrog tib lub npe tshaj tawm. Feem ntau, txhua qhov chaw nres nkoj nqa tsheb mus rau ib qho chaw nyob subnet yuav yog tib VLAN. Static VLANs yog VLANs uas tau teeb tsa los ntawm kev muab lub npe, VLAN ID (VID) thiab chaw nres nkoj. Dynamic VLANs yog tsim los ntawm kev khaws cia cov chaw nyob kho vajtse ntawm cov khoom siv hauv lub chaw khaws ntaub ntawv kom qhov hloov pauv tuaj yeem muab VLAN dynamically txhua lub sijhawm thaum tus tswv tsev txuas rau qhov hloov. VLANs tso cai rau koj los pab pawg neeg siv nyob ntawm qhov kev ua haujlwm zoo dua li lawv qhov chaw nyob.
VLAN Static VLAN yog dab tsi?
Static VLANs uas tseem hu ua Port-based VLANs yog tsim los ntawm manually muab cov chaw nres nkoj rau VLAN. Thaum ib lub cuab yeej txuas nrog rau qhov chaw nres nkoj nws cia li xav tias VLAN uas qhov chaw nres nkoj tau muab rau. Yog tias tus neeg siv hloov chaw nres nkoj thiab tseem xav tau nkag mus rau tib VLAN, tus thawj tswj hwm lub network yuav tsum tau muab qhov chaw nres nkoj rau VLAN. Static VLANs feem ntau yog siv los txo kev tshaj tawm thiab ua kom muaj kev ruaj ntseg. Txij li VLANs zoo li qub muaj kev tswj hwm me me thiab muab kev ruaj ntseg zoo dua li cov keyboards ib txwm siv, lawv tau siv dav. Lwm qhov tseem ceeb ntawm VLANs zoo li qub yog qhov muaj peev xwm tswj tau qhov twg tus neeg siv txav mus rau hauv lub network loj. Los ntawm kev muab cov chaw nres nkoj tshwj xeeb ntawm cov keyboards hauv lub network, cov thawj coj hauv lub network tuaj yeem tswj kev nkag mus thiab txwv cov peev txheej network uas siv tau los ntawm cov neeg siv.
Dynamic VLAN yog dab tsi?
Raws li tau hais ua ntej, dynamic VLANs yog tsim los ntawm kev muab tus tswv tsev rau VLAN thaum tus tswv tsev txuas rau qhov hloov pauv siv cov chaw nyob kho vajtse khaws cia hauv cov ntaub ntawv. Dynamic VLANs siv lub hauv paus server hu ua VMPS (VLAN Membership Policy Server). VMPS yog siv los tswj cov chaw nres nkoj teeb tsa ntawm txhua qhov hloov pauv ntawm VLAN network. VMPS server tuav cov ntaub ntawv uas muaj MAC chaw nyob ntawm txhua qhov chaw ua haujlwm nrog VLAN nws nyob. Qhov no muab VLAN-rau-MAC chaw nyob daim ntawv qhia. Cov phiaj xwm phiaj xwm no tso cai rau cov tswv txav mus rau hauv lub network thiab txuas mus rau ib qho kev hloov, uas yog ib feem ntawm VMPS network thiab tseem tuav nws qhov kev teeb tsa VLAN. Kev ua haujlwm pib xav tau rau kev teeb tsa VMPS yog qhov loj vim li no dynamic VLANs tsis tshua muaj. Thaum tus tswv tsev txuas nrog rau qhov hloov pauv, nws raug tshuaj xyuas tawm tsam VMPS cov ntaub ntawv rau nws cov tswv cuab VLAN ua ntej qhov chaw nres nkoj qhib thiab muab rau VLAN. Qhov no tiv thaiv tus tswv tsev txawv teb chaws nkag mus rau lub network los ntawm tsuas yog ntsaws rau hauv qhov chaw ua haujlwm rau lub qhov (socket) phab ntsa.
Qhov txawv ntawm Static VLAN thiab Dynamic VLAN yog dab tsi?
Qhov sib txawv tseem ceeb ntawm VLANs zoo li qub thiab dynamic VLANs yog tias VLANs zoo li qub tau teeb tsa manually los ntawm kev muab cov chaw nres nkoj rau VLAN thaum dynamic VLANs siv cov ntaub ntawv khaws cia VLAN-rau-MAC daim phiaj los txiav txim VLAN uas tus tswv tsev tshwj xeeb. txuas nrog. Qhov no muab kev hloov pauv ntau dua hauv dynamic VLANs tso cai rau cov tswv txav mus rau hauv lub network uas tsis yog cov network zoo li qub. Tab sis kev teeb tsa VMPS neeg rau zaub mov uas muaj VLAN-rau-MAC daim ntawv qhia yuav tsum tau ua haujlwm ntau heev. Vim tias qhov nyiaj siv ua haujlwm network no nyiam nyiam VLANs zoo li qub.
