1. Cov qib ua haujlwm sib txawv:

Txheej 2 hloovua haujlwm ntawm cov ntaub ntawv txuas txheej, thiabTxheej 3 keyboardsua haujlwm ntawm txheej txheej network.Txheej 3 hloov tsis tau tsuas yog ua tiav high-speed forwarding ntawm cov ntaub ntawv packets, tab sis kuj ua tau zoo network kev ua tau zoo raws li kev sib txawv network.

2. Lub hauv paus ntsiab lus txawv:

Lub hauv paus ntsiab lus ntawm txheej 2 hloov yog tias thaum hloov pauv tau txais cov ntaub ntawv pob ntawv los ntawm ib qho chaw nres nkoj, nws yuav xub nyeem qhov chaw nyob MAC hauv pob ntawv, tom qab ntawd nyeem qhov chaw nyob MAC hauv pob ntawv, thiab saib qhov chaw sib txuas hauv lub rooj chaw nyob., yog tias muaj qhov chaw nres nkoj sib raug rau qhov chaw nyob MAC nyob rau hauv lub rooj, luam cov ntaub ntawv ncaj qha mus rau qhov chaw nres nkoj no.Lub hauv paus ntsiab lus ntawm Layer 3 hloov yog qhov yooj yim, uas yog, ib txoj kev sib pauv ntau zaus.Feem ntau hais lus, nws yog thawj qhov chaw mus rau qhov chaw.Qhov chaw mus rau qhov chaw tuaj yeem pauv tau sai.

3. Muaj nuj nqi sib txawv:

Layer 2 hloov yog raws li MAC chaw nyob, tsuas yog xa cov ntaub ntawv, thiab tsis tuaj yeem teeb tsa nrog tus IP chaw nyob, thaum txheej txheej 3 hloov ua ke nrog txheej txheej 2 hloov tshuab nrog txheej 3 xa mus, uas txhais tau hais tias txheej txheej 3 hloov yog raws li txheej txheej 2 hloov.Txoj haujlwm routing tau ntxiv rau saum toj no, thiab IP chaw nyob ntawm vlans sib txawv tuaj yeem teeb tsa, thiab kev sib txuas lus ntawm vlans tuaj yeem pom tau los ntawm peb txheej routing.

4. Kev siv sib txawv:

Txheej 2 keyboards feem ntau yog siv nyob rau hauv lub network nkag txheej thiab aggregation txheej, thaum txheej 3 keyboards feem ntau yog siv nyob rau hauv lub core txheej ntawm lub network, tab sis kuj muaj ib tug me me ntawm txheej 3 keyboards siv nyob rau hauv lub aggregation txheej.

5. Cov txheej txheem txhawb nqa yog txawv:

Txheej 2 keyboards txhawb nqa lub cev txheej thiab cov ntaub ntawv txuas txheej txheej txheem, xws li Ethernet keyboards thiab Txheej 2 keyboards.Lub HUB muaj cov haujlwm zoo sib xws, thaum Layer 3 hloov pauv txhawb lub cev txheej, cov ntaub ntawv txuas txheej thiab txheej txheej txheej txheej txheej txheem.