Itheminali yomgca we-Optical vs Tshintsha

I-PrefatoryNgokoqhagamshelo lwe-intanethi, kukho izixhobo ezininzi ezinceda umsebenzisi ukuba azidibanise kwiWebhu eBanzi yeHlabathi. Ukutshintsha kunye neetheminali zomgca we-optical (OLTs) zezinye izixhobo eziqhelekileyo. Izixhobo ze-NET kunye ne-OD zinezakhono ezahlukeneyo kunye nemisebenzi. Kweli nqaku, siza kuxubusha into abayenzayo kwaye kutheni ufuna enye phezu komnye. Uluhlu lweziqulathoYintoni i-Optical Line Terminal (OLT)? Isixhobo se-terminal ye-optical line sibizwa ngokuba yi-OLT ngokufutshane, ebonelela ngoqhagamshelwano phakathi kwenethiwekhi yokufikelela komsebenzisi kunye neenethiwekhi zedatha yoluntu. I-OLT ikwisiphelo somboneleli wenkonzo kwaye ihluza yonke i-traffic ehamba ngeFiber yayo. I-OLT iguqula imiqondiso yombane yesixhobo somthengi kwiimpawu ze-optical, ezinokuthi zihanjiswe ngentambo ye-fiber-optic. Xa le miqondiso ye-optical idluliswa ifunyenwe yi-ONU (iyunithi yenethiwekhi ye-optical) ekupheleni komsebenzisi ukuyiguqula kwakhona kwifom yombane eqhelekileyo. Yintoni iTshintsho? Ukutshintsha, nangona kunjalo, sisixhobo esinokusetyenziswa ukubopha izinto ezahlukeneyo ngenjongo yothungelwano. Isetyenziselwa ukulawula itrafikhi ethunyelwe phakathi kwezixhobo ezahlukeneyo kuthungelwano. Utshintsho luqhele ukusetyenziswa kuthungelwano lwengingqi (LANs) kuba lusebenza ngokukhawuleza kune hub yenethiwekhi yemveli. Ezi ziyilelwe ukuqinisekisa ukuba idatha ethunyelweyo ifikelela kwisixhobo ebisenzelwa yona hayi enye. Izibonelelo ze-Optical Line TerminalsOLT zigqithisa utshintsho kwimbali. Omnye umahluko obalulekileyo phakathi kwe-OLT kunye nokutshintsha kukuba izixhobo ze-OLT zibonelela nge-intanethi ngokukhawuleza kunokutshintsha okuqhelekileyo. Oku kubangelwa ikakhulu kukuba iintambo zefiber-optic zine-bandwidth ephezulu kakhulu kuneentambo zobhedu ekusekwe kuzo iiswitshi. Ngokufanayo, iiOLT ziyakwazi ukugubungela indawo ende emva koko zitshintshele ukuthumela idatha. Ke ngoko, ezi zilungele ukubonelela ngezixhobo ze-intanethi kwimimandla yasemaphandleni. IiterminalsOLT zeOptical Line ziya ziba krelekrele kwaye izinto ezintsha ziyafika. Ngokomzekelo, ezinye ii-OLT ngoku ziqonda i-software-defined networking (SDN) ubuchule bokukhathalela ulawulo lwenethiwekhi ngokukhawuleza. Kungenjalo, itekhnoloji efana nothungelwano lwe-passive optical network (PONs) lubonisa inkqubela phambili ethoba iindleko zeziseko zophuhliso ngokuvumela abasebenzisi abaninzi ngoqhagamshelo olulodwa lwefiber-optic. Ukhuseleko lwe-Optical Line TerminalsOLTs zikhuselekile ukusebenza nazo. Ukuzisebenzisa kubantu ngaphandle kokuziphatha, siya kubangela iingozi ezinkulu zokhuseleko. I-AOL kufuneka ifakwe ngokufanelekileyo kwaye isetyenziswe ngokwemiyalelo yomenzi ukwenzela ukhuseleko olufanelekileyo lwabo bonke ababandakanyekayo. Ukusebenzisa i-Optical Line TerminalUkusebenzisa izibane, kufuneka ube noqhagamshelo lwefiber optic apho uqhagamshela khona. Xa uqhagamshelo lwemayile yokugqibela lubekiwe, emva koko umniki wenkonzo oyikhethileyo uya kuthi ngembuyekezo aqalise ukuhlohla iOLT yakhe ekupheleni kwabathengi. Iyunithi yenethiwekhi yokukhanya (i-ONU) kufuneka iqhagamshelwe kwi-Optical Line Terminal (OLT), esetyenziswa njenge-OLT. Emva koko, iya kudityaniswa kwisixhobo sakho usebenzisa intambo ye-Ethernet. Umgangatho wenkonzo ye-OLTUmgangatho wenkonzo uqhele ukuba phezulu ukusuka kwicala le-OLT. Ukulahleka kwepakethi kubangelwa i-bandwidth ephezulu yeentambo zefayibha / iiswitshi ezichasene neengcingo zobhedu ezisetyenziswa ngokutshintsha. Ngaphaya koko, iiOLT zidla ngokuqhutywa ngababoneleli abathi: babeke iliso kuthungelwano ukuqinisekisa ukuba lusebenza kwinqanaba eliphezulu; I-Optical Line Terminals ApplicationsOLTs zisetyenziswa kakhulu ukunika ukufikelela kwi-intanethi ebantwini. Ziluncedo ngakumbi apho kukho iintambo zobhedu ezintsha endaweni. Okwesibini, iiOLTs zikwasetyenziswa kula mashishini anemfuno ye-intanethi enesantya esiphezulu njengamaziko edatha kunye namaziko emali ambalwa. Isishwankathelo Kwinqanaba eliphezulu, nangona Zombini zizixhobo eziluncedo ekupheleni kosuku zisebenza kwiimfuno ezahlukeneyo zokubonelela ngeenkonzo ze-intanethi;IsipheloOLTs kunye noTshintsho zombini zibalulekile endaweni yazo. IiOLT zibonelela ngezakhono zesantya esikhawulezayo kunye nokuhanjiswa kwedatha yomgama omde kunokutshintsha. Ii-OLTs, kwelinye icala ziphantsi kokuphuculwa rhoqo kunye nokuphuculwa kobugcisa obutsha (njenge-PON, i-SDN) ephuhlisiwe. Utshintsho lusetyenziswa ikakhulu ukudibanisa izixhobo kwinethiwekhi, ngelixa i-OLT isenza uqhagamshelo lwe-intanethi olutofotofo lwabasebenzisi bokugqibela.