I-Ethernet ne-Hub Hubs echazwe
Ekuxhumaneni kwekhompyutha, ihabhu liyidivayisi encane, elula, engabizi kakhulu ehlanganisa ama-computer amaningi ndawonye.
Kuze kube ngama-2000s, ama-hubs e- Ethernet asetshenziselwa kakhulu ukuxhumana kwenethiwekhi ngenxa yezinto zabo ezilula kanye nezindleko eziphansi. Ngenkathi ama-router broadband ethatha indawo yawo emakhaya, ama-hubs asasebenza ngenjongo ewusizo. Ngaphandle kwe-Ethernet, ezinye izinhlobo ezimbalwa zamanethiwekhi amanethiwekhi nazo zikhona kubandakanya ama-hubs e- USB .
Izinhlamvu ze-Hubs Ethernet
Ihabhu liyibhokisi elingenxantathu, elivame ukwenziwa ngepulasitiki, elitholayo amandla avela egumbini elijwayelekile lomdonga. Ihabhu lijoyina ama-computer amaningi (noma amanye amadivaysi enethiwekhi) ndawonye ukudala ingxenye eyodwa yenethiwekhi. Kule nethiwekhi yenethiwekhi, wonke amakhompyutha angakwazi ukuxhumana ngokuqondile nomunye nomunye.
Ama-hubs e-Ethernet ahluka ngesivinini (isilinganiso senethiwekhi yenethiwekhi noma umkhawulokudonsa ) asekela. Ama-hubs okuqala e-Ethernet anikeze u-10 Mbps kuphela okulinganiselwe ukulinganisa. Izinhlobo ezintsha ze-hubs zenezela ukwesekwa okungu-100 Mbps futhi ngokuvamile zinikelwa kokubili amakhono we-Mb Mbitha kanye no-100 Mbps (okuthiwa yi- double-speed noma i-hubs 10/100 ).
Inombolo yamapayipi ihabhu le-Ethernet isekela libuye lihluka. Ama-hubs e-Ethernet e-Four-five-port ajwayelekile kakhulu kumanethiwekhi omkhaya, kepha ama-hubs ayisishiyagalombili nama-16-port angatholakala kwezinye izindawo zasekhaya nasezindaweni ezincane. Ama-Hubs angaxhunyaniswa komunye nomunye ukuze anwebe inani lenani lamadivaysi yenethiwekhi ye-hub angase asekele.
Ama-hubs asekudala ase-Ethernet ayesayizikhulu kakhulu futhi ngezinye izikhathi anomsindo njengoba ayequkethe abalandeli abakhelwe ngaphakathi ekupholiseni i-unit. Amadivaysi anamuhla ancane kakhulu, aklanyelwe ukuhamba, futhi angaboni kahle.
Ama-Hub, asebenzayo futhi ahlakaniphile
Kunezinhlobo ezintathu ezisisekelo eziyisisekelo:
- okungahambi kahle
- esebenzayo
- ohlakaniphile
Ama-hubs angasebenzi awakhulise isignali kagesi yamaphakethe angenayo ngaphambi kokuba asakaze enethiwekhi. Ama-hubs asebenzayo , ngakolunye uhlangothi, enza lokhu kukhuliswa, njengoba kwenza uhlobo oluhlukile lwedivaysi yenethiwekhi ezinikezele ngokuthi i- repeater . Abanye abantu basebenzisa igama elithi concentrator uma bebhekisele kubhubhe elincane kanye nokuphindaphindiwe kwama-multiport lapho bebhekisela kwihabhu elisebenzayo.
Ama-hubs ahlakaniphile angeza izici ezengeziwe kwi-hub esebenzayo ebaluleke kakhulu emabhizinisini. I-hub ehlakaniphile ngokuvamile i-stackable (eyakhiwe ngendlela yokuthi ama unit amaningi angabekwa omunye ngaphezulu kwesinye ukugcina isikhala). I-Intelligent Ethernet hubs iphinde ibandakanye amakhono okuphatha okude nge- SNMP kanye ne- virtual LAN (VLAN) ukwesekwa.
Ukusebenza namaHhobhu Ethernet
Ukuxhumanisa, iqembu lama-computer usebenzisa i-hub ye-Ethernet, qala ukuxhuma ikhebula le-Ethernet ngaphakathi kwunithi, bese uxhuma elinye ukuphela kwekhebula kwikhadi lokuboniswa kwenethiwekhi yikhompyutha ngayinye (i-NIC) . Wonke ama-hubs e-Ethernet amukela izixhumi ze- RJ-45 zezintambo ezijwayelekile ze-Ethernet.
Ukwandisa inethiwekhi ukuze ubeke amadivaysi amaningi, ama-hubs e-Ethernet angabuye axhumeke komunye nomunye, aguqule noma ahambe .
Uma iHubhu ye-Ethernet idinga
Ama-Ethernet hubs asebenza njengamadivayisi we- Layer 1 ku- model ye-OSI . Nakuba ama-hubs asebenza ngendlela efanayo, cishe yonke imishini yenethiwekhi ye-Ethernet ejwayelekile namuhla isebenzisa ubuchwepheshe be-switch switch kunalokho, ngenxa yezinzuzo zokusebenza zamasishintshi. Ihabhu lingasiza ekungenikeni okwesikhashana ukushintshwa kwenethiwekhi noma uma ukusebenza akuyona into ebalulekile kwinethiwekhi.