Hloov (Switch) txhais tau tias "hloov" thiab yog ib lub cuab yeej siv rau kev xa hluav taws xob (optical) teeb liab. Nws tuaj yeem muab txoj kev teeb liab hluav taws xob tshwj xeeb rau ob lub network nodes ntawm qhov hloov nkag. Cov hloov feem ntau yog Ethernet hloov. Lwm cov uas feem ntau yog cov hloov suab hauv xov tooj, cov hloov fiber thiab lwm yam.
Cov haujlwm tseem ceeb ntawm lub switch suav nrog kev teeb tsa lub cev, network topology, kev kuaj xyuas qhov yuam kev, cov kab ke ntawm cov duab, thiab kev tswj hwm kev ntws. Lub switch kuj muaj qee cov haujlwm tshiab, xws li kev txhawb nqa rau VLAN (Virtual Local Area Network), kev txhawb nqa rau kev sib sau ua ke, thiab qee qhov txawm tias muaj lub luag haujlwm ntawm firewall.
1. Ib yam li cov hub, cov switches muab ntau qhov chaw nres nkoj rau cabling, tso cai rau cabling hauv lub hnub qub topology.
2. Ib yam li cov repeaters, hubs, thiab bridges, lub switch rov ua dua ib lub teeb liab hluav taws xob square uas tsis muaj kev cuam tshuam thaum nws xa cov thav duab mus rau pem hauv ntej.
3. Ib yam li cov choj, cov switches siv tib lub logic forwarding lossis filtering ntawm txhua qhov chaw nres nkoj.
4. Ib yam li tus choj, lub qhov hloov pauv faib lub network hauv zos ua ntau qhov chaw sib tsoo, txhua tus muaj bandwidth ywj pheej, yog li txhim kho qhov bandwidth ntawm lub network hauv zos.
5. Ntxiv rau cov haujlwm ntawm cov choj, cov hubs, thiab cov repeaters, cov switches muab cov yam ntxwv siab dua xws li virtual local area networks (VLANs) thiab kev ua tau zoo dua.
Lub sijhawm tshaj tawm: Lub Peb Hlis-17-2022