I-Ethernet kunye neeHlabhu zeNethiwekhi ezichazwe
Kwi-intanethi ye-intanethi, i- hub yinkqutyana encinci, elula, engabizi kwi-computer edibanisa iikhomputha ezininzi kunye.
Kuze kube ngama-2000, ama-hubs e- Ethernet asetyenziswa ngokubanzi kwi-intanethi yekhaya ngenxa yokulula kunye neendleko eziphantsi. Ngelixa iibarti zesebhanti zithatha indawo yazo emakhaya, ii-hubs zisasebenza ngenjongo efanelekileyo. Ngaphandle kweEthernet, ezinye iindidi zamanethiwekhi amanethiwekhi zikhoyo ziquka ii- hubs ze- USB .
Iimpawu zeeHebhu zeEthernet
I-hub ibhokisi engxande, edlalwa yiplastiki, efumana amandla ayo kwi-out wall. I-hub idibanisa iikhomputha ezininzi (okanye ezinye iisetyenziselwano zenethiwekhi) kunye kunye nokwenza inxalenye enye yenethiwekhi. Kulo candelo lenethiwekhi, zonke iikhomputha ziyakwazi ukunxibelelana ngqo.
Ii-hubs ze-Ethernet ziyahluka kwijubane (isantya sedatha yenethiwekhi okanye umda wendlela ). Ii-hubs zangaphambili ze-Ethernet zanikela nge-10 Mbps kuphela ezilinganiswe ngesivinini. Iindidi ezintsha ze-hubs zongeze inkxaso engu-100 Mbps kwaye zihlala zibonelelwa ngee-10 Mbps kunye ne-100 Mbps amandla (okubizwa ngokuba yi- double-speed or 10/100 hubs).
Inani lamachweba i-Ethernet hub inkxaso isebenza. Ii-hubs ze-Ethernet ze-Ethernet eziqhelekileyo zixhaphake kakhulu kumanethiwekhi asekhaya, kodwa ii-hubs ze-port-16 zingafumaneka kwezinye iindawo zasekhaya nakwii-ofisi ezincinane. IiHubs zinokuxhumeka komnye nomnye ukunyusa inani elipheleleyo lamadivaysi inethiwekhi ye-hub inokuxhasa.
Ama-hubs asebekhulile a-Ethernet ayekhulu kakhulu ngobukhulu kwaye ngamanye amaxesha anomsindo njengoko ayequlethe abalandeli abakhelwe ukulungiswa kweyunithi. Izixhobo zanamhlanje zincinci, zenzelwe ukuhamba, kwaye zingabonakali.
I-Passive, Active and Intelligent Hubs
Iintlobo zentathu ezisisiseko zezikhokelo zikhona:
- i-passive
- esebenzayo
- bulumko
Ama-hubs angapheliyo akhuliseli uphawu lwegesi lwamapakethi angenayo ngaphambi kokuba asasaze kwi-network. Ngaphandle kolunye uhlangothi, yenza oku kuphakanyiswa, njengoko kwenza uhlobo oluhlukeneyo lweedivaysi yonxibelelwano olubizwa ngokuba yi- repeater . Abanye abantu basebenzisa i- concentrator xa bebhekisela kwi-hub ehamba phambili kunye nomphindaphindi wee-multiport xa bebhekise kwi-hub esebenzayo.
Izixhobo ezinengqondo zidibanisa iinkcukacha ezongezelelweyo kwi-hub esebenzayo ebaluleke kakhulu kumashishini. I-hub ehlakaniphile ngokuqhelekileyo ishicilelwe (yenziwe ngendlela enokuthi ifakwe amanqaku amaninzi ngaphezu komnye ukugcina indawo). Iikhomputha ze-Ethernet ze-Intelligence nazo ziquka amandla okulawula okude nge- SNMP kunye ne -LAN (VLAN) inkxaso.
Ukusebenza ngeeHebhu zeEthernet
Ukunxibelelana, iqela leikhomputha usebenzisa i-hub ye-Ethernet, qalisa ukudibanisa ikhebula ye-Ethernet kwiyunithi, uze uqhagamshelane nomnye umgca wekhebula kwikharityhulam yomsebenzisi womnatha wekhompyutha (NIC) nganye . Zonke i-Ethernet hubs zamkela ii- RJ-45 ezixhunyiwe zee-standard Ethernet.
Ukwandisa inethiwekhi ukulungiselela amacebo amaninzi, ii-Ethernet hubs nazo zinokuxhumeka komnye nomnye, ukutshintsha , okanye ukuhamba.
Xa i-Ethernet Hub ifuneka
I-Ethernet hubs isebenza njengezixhobo ze- Layer 1 kwisimo se- OSI . Nangona i-hubs isebenza ngokufana, cishe zonke izixhobo zonxibelelwano ze-Ethernet ezisetyenziswayo namhlanje zisebenzisa i-teknoloji yokutshintsha inethiwekhi esikhundleni, ngenxa yeenzuzo zokusebenza zitshintshi. I-hub ingaba luncedo ekutshintsheni okwethutyana ukutshintshwa kwenethiwekhi okanye xa ukusebenza kungeyona nto ebalulekileyo kwinethiwekhi.