Uma wena (noma umsebenzi wakho) udinga ikhebula le-crossover
Ikhebula le-crossover, elibizwa ngezikhathi ezithile ngekhebula , lixhuma amadivaysi amabili enethiwekhi ye- Ethernet komunye nomunye. Zakhiwe ukusekela ukuxhumana kwenethiwekhi okwesikhashana ezimweni lapho idivayisi ephakathi efana ne- router yenethiwekhi engekho.
Amakhodi e-Crossover abukeka acishe afane namakhodi ejwayelekile, eqondile (noma ama-Ethernet) noma e-Ethernet kuze kube yilapho kuqhathaniswa izakhiwo zabo zangaphakathi.
I-Crossover vs i-Straight Through Cable
Ikhebula elijwayelekile, eliyi-patch lisetshenziselwa ukuxhuma izinhlobo ezahlukene zamadivaysi ndawonye, ​​njengekhompyutha kuya kushintsho senethiwekhi. Ikhebula le-crossover lisho okuphambene - lixhuma amadivaysi amabili enhlobo efanayo.
Imikhawulo yekhebula le-patch ingasetshenziswa nganoma iyiphi indlela uma nje zombili iziphetho zifana. Uma kuqhathaniswa ngqo nezintambo ze-Ethernet, i-wiring yangaphakathi yekhebula le-crossover inqanda ukuthumela nokuthola izimpawu.
Izintambo ezifakwe embala eziguqulwa zingabonakala ngezixhumi ze-RJ-45 ekugcineni kwekhebula:
- Izintambo ezijwayelekile zihambisana ngokulandelana kwezintambo ezinemibala ekupheleni kwawo konke
- Izintambo ze-Crossover zinezintambo zokuqala nezesithathu (ukubala ukusuka kwesobunxele kuya kwesokudla) zawela, futhi izintambo zesibili nesithupha zawela
Ikhebula elihle le-crossover e-Ethernet lizobekwa uphawu ngokukhethekile ukuze lihlukanise kusuka ngqo ngqo. Abaningi banombala obomvu futhi banesibindi sokuthi bagxilile emaphaketheni ayo kanye ne-wire casing.
Ingabe Udinga ikhebula leCrossover?
Amakhodi e-Crossover ayevame ukusetshenziselwa ochwepheshe be-Information Technology (IT) ngonyaka we-1990 no-2000 kusukela amafomu athandwayo e-Ethernet ngaleso sikhathi awazange asekele ukuxhumeka kwekhebula eliqondile phakathi kwama-host.
Kokubili izindinganiso zokuqala nezokushesha ze-Ethernet zenzelwe ukusebenzisa izintambo ezithile zombili izimpawu zokudlulisa nokuthola. Lezi zindinganiso zidinga ukuthi iziphetho ezimbili zixhumana kanjani ngokusebenzisa idivaysi ephakathi ukugwema ukungqubuzana kokuzama ukusebenzisa izintambo ezifanayo zombili kokudlulisa nokwamukela.
Isici se-Ethernet esibizwa ngokuthi i-MDI-X sinikeza ukwesekwa okudingekayo ngokuzenzekelayo ukuvimbela lezi zingxabano zesignali. Ivumela isikhombimsebenzisi se-Ethernet ukuthi sinqume ngokuzenzakalelayo ukuthi iyiphi i-convention yokubonisa imboni ngakolunye uhlangothi lwabachwepheshe bekhebula futhi ixoxisana nokusetshenziswa kokudlulisa nokwamukela izintambo ngokufanele. Qaphela ukuthi ukuphela kokuphela kokuxhumeka kudinga ukusekela ukuzitholela okuzenzakalelayo kwalesi sici ukusebenza.
Amanethiwekhi amaningi asekhaya asebandleni (ngisho namamodeli amadala) afaka ukuxhaswa kwe-MDI-X kuma-interfaces awo e-Ethernet. I-Gigabit Ethernet nayo yamukela i-MDI-X njengendlela evamile.
Amakhodi we-Crossover adingekayo kuphela lapho exhuma amadivaysi amaklayenti amabili e-Ethernet lapho kungalungiselwe khona i-Gigabit Ethernet. Amadivaysi e-Ethernet yanamuhla manje athola ngokuzenzakalelayo ukusetshenziswa kwezintambo ze-crossover futhi asebenze nawo ngokukhululekile.
Indlela yokusebenzisa amakhodi e-Ethernet Crossover
Amakhodi e-Crossover kufanele asetshenziselwe kuphela ukuxhumana kwenethiwekhi ngqo. Ngenxa yesizathu esichazwe ngenhla, ezama ukuxhuma ikhompyutha kumgwaqo omdala noma ukushintshwa kwenethiwekhi ngekhebula le-crossover esikhundleni sekhebula elivamile, lingavimbela isixhumanisi ekusebenzeni.
Lezi zingcingo zingathengwa ngokukhethekile ngokusebenzisa izitolo ezihlukahlukene ze-elekthronikhi. Ama-Hobbyist kanye nabanye abaqeqeshiwe be-IT bangase bakhethe ukwenza izintambo zabo ze-crossover esikhundleni.
Ikhebula eliqonde ngqo lingashintsha ngokushesha ibe ikhebula le-crossover ngokususa isixhumi futhi senze kabusha izintambo ngezingcingo ezifanele zokudlulisela nokuthola.