Umthengisi wesiNqanawe lwesikhephe ngokwesintsha kwiSwitch

IntshayeleloNgokokudibana ne-intanethi, kukho izixhobo ezininzi ezinceda umsebenzisi ukuba aziqhagamshele kwi-World Wide Web. Izixhobo zokutshintsha kunye nezikhululo ze-optical line (OLTs) zezinye zezixhobo eziqhelekileyo. Izixhobo zeNET kunye neOD zinamandla nemisebenzi eyahlukileyo. Kweli nqaku, siza kuthetha ngezinto ezenziwa ziintsana nezizathu zokuba ufuna enye ngaphezu kwenye. I-Table of ContentsYintoni i-Optical Line Terminal (OLT)? Isixhobo sokugqibela somgca we-optical sibizwa ngokuba yi-OLT ngokufutshane, esibonelela ngokudibanisa phakathi kwenethiwekhi yokufikelela yomsebenzisi kunye neenethiwekhi zolwazi zoluntu. I-OLT ibekwe kwisiphelo somnikezeli wenkonzo kwaye ihluza yonke itrafikhi ehamba ngeFiber yayo. I-OLT iguqula imiqondiso yombane yesixhobo somthengi ibe yimiqondiso ebonakalayo, enokudluliselwa ngentambo yefayibha. Xa ezi mpawu zibonwayo zithunyelwa zifunyenwe yi-ONU (iyunithi yenethiwekhi ye-optical) ekupheleni komsebenzisi ukuyiguqula ibuyele kwifom eqhelekileyo yombane. Yintoni iSwitch? Noko ke, iswitshi sisixhobo esinokusetyenziselwa ukudibanisa izinto ezahlukeneyo ngenjongo yokunxibelelana. Isetyenziselwa ukulawula ukugcwala kwabantu phakathi kwezixhobo ezahlukeneyo kwinethiwekhi. Iitshintshi zisetyenziswa ngokuqhelekileyo kwiinethiwekhi zendawo (i-LANs) kuba zisebenza ngokukhawuleza kunenethiwekhi yemveli. Ezi zenzelwe ukuqinisekisa ukuba idatha ethunyelweyo ifikelela kwisixhobo esenzelwe sona hayi esinye. Iinzuzo ze-Optical Line TerminalsOLTs ziyadlula kwii-switches kwimbali. Enye yezona zinto zibalulekileyo ezahlukileyo phakathi kwee-OLT kunye ne-switches kukuba izixhobo ze-OLT zibonelela nge-intanethi ngokukhawuleza kune-switches eziqhelekileyo. Oku ikakhulu kungenxa yokuba i-fiber-optic cables inobubanzi obuphezulu kakhulu kunee-copper cables ezisekelwe kuzo ii-switches. Ngokufanayo, ii-OLT ziyakwazi ukugubungela indawo ende kunokucima ukuthumela idatha. Ngoko ke, ezi zilungele ukubonelela nge-intanethi kwimimandla yasemaphandleni. I-OLTs zifumana ubuchule ngakumbi kwaye ezintsha zifika. Umzekelo, ezinye ii-OLT ngoku ziyaziqonda iinkqubo ze-software-defined networking (SDN) ukuze zinyamekele ulawulo lwenethiwekhi ngokukhawuleza. Enye indlela, iteknoloji efana neenethiwekhi ezibonakalayo (PONs) ibonisa inkqubela phambili ephantsi kweendleko zeziseko zophuhliso ngokuvumela abasebenzisi abaninzi kunxibelelwano olunye lwefayibha ye-optic. Ukhuseleko lweziphelo ze-OLT ze-Optical Line nazo zikhuselekile ukuba zisebenze. Ukuzisebenzisa kubantu abangenazo iindlela zokuziphatha, siya kubangela ingozi enkulu yokhuseleko. I-AOL ifanele ifakwe kakuhle ize isetyenziswe ngokuvisisana nemiyalelo yomenzi ukuze wonke umntu obandakanyekayo akhuseleke. Ukusebenzisa i-Optical Line TerminalUkusebenzisa izibane, kufuneka ube ne-fiber optic connection apho ungaqhagamshela khona. Xa uqhagamshelo lwe mile yokugqibela lusetyenziswa, umboneleli wenkonzo akhethileyo uya kuqala ukufaka i-OLT yakhe kumthengi. Iyunithi yenethiwekhi ye-optical (ONU) kufuneka idityaniswe kwi-Optical Line Terminal (OLT), esetyenziswa njenge-OLT. Emva koko, iya kuqhagamshelwa kwisixhobo sakho usebenzisa intambo ye-Ethernet. Umgangatho wenkonzo ye-OLTUmgangatho wenkonzo udla ngokuba phezulu kwicala le-OLT. Ukulahleka kwepakethi kungenxa yobubanzi bebandwidth ephezulu yeentambo zefayibha/izitshintshi xa kuthelekiswa nentambo yobhedu esetyenziswa zizitshintshi. Ngaphezu koko, ii-OLT zihlala zilawulwa ngababoneleli: abajonga inethiwekhi ukuqinisekisa ukuba isebenza kwinqanaba eliphezulu lokusebenza; Izicelo ze-Optical Line Terminals Ii-OLT zisetyenziswa ikakhulu ukunika abantu ukufikelela kwi-intanethi. Ziluncedo ngokukodwa apho kukho iingcingo zobhedu ezintsha. Okwesibini, ii-OLT zisetyenziswa nakwimibutho enesidingo se-intanethi yesantya esiphezulu njengeziko leenkcukacha kunye namaziko ambalwa emali. Isifinyezo Kwinqanaba eliphezulu, nangona zombini zixhobo eziluncedo ekupheleni kosuku zisebenza iimfuno ezahlukeneyo zokubonelela ngeenkonzo ze-intanethi;IsipheloI-OLTs kunye neeSwitches zombini zibalulekile endaweni yazo. I-OLTs zibonelela ngezakhono zokuhambisa idatha ngesantya esithe kratya kunye nomgama omde kunama-switches. I-OLTs, kwelinye icala, ziphuculwa rhoqo kwaye kuphuhliswa ukuphuculwa kobugcisa obutsha (njengee-PON, ii-SDN). Iiswitches zisetyenziswa ikakhulu ukudibanisa izixhobo kwinethiwekhi, ngelixa i-OLT yenza ukuba i-intanethi ihlale ikhululekile kubasebenzisi bokugqibela. Ukuphendula ukuba ingaba ezi zixhobo zimbini zinezinto ezilungileyo nezingalunganga ekubancedeni ukuba ungene kwi-intanethi ukuba unyanzelekile.