Xa abanikazi beziko ledatha bakha i-cross-data data network interconnections, baqwalasela ngokukodwa imiba efana ne-bandwidth enkulu, i-latency ephantsi, i-high density, ukuthunyelwa ngokukhawuleza, ukusebenza lula kunye nokugcinwa, kunye nokuthembeka okuphezulu.Okwangoku, itekhnoloji ye-OTN ye-bandwidth enkulu ilawulwa ikakhulu ngabavelisi bezixhobo ze-telecom (iitshiphusi zixoxwa ngokwahlukeneyo), njengeHuawei, iZTE, kunye neAran.Abona bathengi baphambili abajongana nabo ngabaqhubi bemfonomfono bemveli, ngoko ke iimpawu zemveliso ye-OTN ziyilelwe ikakhulu ukuhlangabezana neempawu zenkonzo zaba baqhubi.Ngenxa yoku, i-OTN isetyenziswa ngakumbi kwi-DCI yenethiwekhi yezicelo kwishishini le-Intanethi.Iingxaki ezininzi zokungavisisani.
Iimpawu zezixhobo ze-OTN ziingxaki ezifanayo ezijongene ne-DCI, i-overhead yoshishino olutyebileyo, amandla e-OAM anamandla othungelwano, ukucwangcisa kunye ne-multiplexing ye-bandwidths ezahlukeneyo zegranular, ukunyamezela komgca phantsi kweemeko ezide, kunye nokusetyenziswa kwe-low-voltage ngqo. yangoku.Iimpawu ezinje ngesantya esisezantsi sokusetyenziswa kwamandla okusetyenziswa kwezixhobo.
1. Ubuchule benkcitho yeshishini elityebileyo bufuna ukuba abasebenzi be-O&M babe nobungcali ngakumbi, bathembele ngakumbi kwinkxaso yobugcisa evela kubavelisi, kwaye babe nobuchwepheshe obuvalekileyo ngakumbi.
2. Izakhono ze-OAM ezinamandla, imigangatho engahambelaniyo, uxhulumaniso olunzima kunye nokuzimela ngokuzimeleyo kunye ne-cross-networks, kunye nemisebenzi engenamsebenzi nayo izisa iindleko ezininzi zokuhambisa kunye nokusebenza kwinethiwekhi ye-DCI.
3. Izakhono ezahlukeneyo zokucwangcisa igranule zenza ulwakhiwo lwesakhelo se-encapsulation lwenkonzo lube nzima kwaye lube ne-nested bytes.
4. Ukunyamezela impazamo yomgca wexesha elide kwenza i-FEC algorithm eyinkimbinkimbi, idle ngaphezulu kwaye ithatha ixesha elide ukuqhutyelwa phambili.
5. Imowudi ye-48V-DC yokubonelela ngombane yezixhobo ze-OTN ihluke kwiikhabhinethi eziqhelekileyo ze-19-intshi ze-220V-AD (okanye i-240V-DC) ezisetyenziswa kumaziko amaninzi edatha.Ufakelo luyinkimbinkimbi kwaye lufuna ukuguqulwa kwamandla kwigumbi lekhompyutha
6. Izixhobo ze-OTN zendabuko zinesakhelo esikhulu, esingafanelanga ukufakwa kwiikhabhinethi eziqhelekileyo, kwaye ubuninzi bomthamo abukho phezulu.Ukwandiswa kamva kuyinkathazo kwaye kufuna ukuba iikhabhathi zisuswe okanye zakhiwe kwakhona.
Okwangoku, uthungelwano lwethu lwe-DCI lubonelela ikakhulu ngemibhobho yedatha yeziko ledatha.Iimpawu eziphambili zemodeli yoshishino yilezi: iimfuno ezidibeneyo kunye ne-single bandwidth granularity, i-bandwidth enkulu, iinkonzo ze-cross-data center (ngokukodwa i-IDC esebenzayo, iinkonzo ezinkulu zedatha)) ineemfuno eziphantsi ze-latency kunye neemfuno eziphezulu zokuzinza kwenethiwekhi;ngelo xesha, ngenxa yokunqongophala kwabasebenzi abafanelekileyo kunye nobugcisa kwishishini le-Intanethi, ukusebenza kunye nokugcinwa kothungelwano lwe-DCI kufuneka kube "lula" "lula" kwaye "lula" - izinto ezibalulekileyo zithethwa kathathu (apho Isn Ngaba luhlobo lwenethiwekhi?);uphuhliso oluqhumayo lwe-Intanethi lwenza ulwakhiwo kunye neemfuno zomjikelo wokwandisa zibe mfutshane (umjikelo wokwandisa we-OTN wabaqhubi isiqingatha sonyaka ukuya kunyaka omnye, ngelixa iimfuno zokwandiswa kwe-DCI ye-Intanethi zi-1 ukuya kwiinyanga ezi-3), ke ngoko, kuyimfuneko ukucinezela. ixesha kuzo zonke iinkalo.
Ngoko ke, i-OTN ibonelela ngesisombululo esisebenzisekayo se-DCI, kodwa i-OTN ayisosisombululo sifanelekileyo kwi-DCI.Ngoku njengoko uthungelwano lwe-DCI lukhula, kukho imfuneko eyandayo yezisombululo ezithile ezifanelekileyo zokusombulula iingxaki ukusuka kwiindleko ukuya kulwakhiwo, ukusebenza kunye nolondolozo.iingxaki ezahlukeneyo ekuhlangabezene nazo.Kwaye ezi ngxaki azikho ngaphezu kweemfuno ezintandathu zenethiwekhi ye-DCI (i-bandwidth enkulu, i-latency ephantsi, i-high density, ukuthunyelwa ngokukhawuleza, ukusebenza okulula kunye nokugcinwa, kunye nokuthembeka okuphezulu):
1. I-bandwidth enkulu, inethiwekhi yokuhanjiswa kwe-DCI ayinayo iintlobo ezityebileyo ze-granules njengabaqhubi, i-bandwidth granules ye-DCI yokudlulisa inethiwekhi ilula, ngoku isetyenziswa ngokuqhelekileyo i-10G okanye i-100G, kwixesha elizayo i-200G / 400G, njl., ngoko akukho mfuneko. ukuyenza ngeBandwidth enkulu yobubanzi kwezinye iigranularities.Ngenxa yokuba umgama womgama wothungelwano lwe-DCI ngokuqhelekileyo awukho mde kakhulu, usebenzisa inkqubo ye-400G esekelwe kwi-200G PM-16QAM imodyuli ye-dual-carrier, umgama wothumelo ngaphandle kwe-relay yombane unokuba malunga neekhilomitha ezingama-500 (PM-64QAM yi. malunga neekhilomitha ezingama-200) , ukuze ukuhanjiswa kwe-metro backbone ye-DCI kungathintelwa ngumgama.
2. I-latency ephantsi, iimfuno zeshishini le-DCI, ngakumbi xa i-computing yefu isetyenziselwa ukudibanisa izibonelelo kunye namaziko edatha asebenzayo amaninzi, i-latency ibalwa kwinqanaba le-microsecond, ngoko ixesha lokudluliselwa kwedatha kufuneka libe lifutshane kangangoko kunokwenzeka, linqwenela ukudlula i-microsecond. isantya sokukhanya.Ukuphelisa umsebenzi ongeyomfuneko wokucubungula idatha kunye nokunciphisa iindlela zokuhambisa umqondiso.Ngokomzekelo, ngokususa umsebenzi we-SD-FEC osetyenziswa yi-100G OTN, enye i-back-back-back ingagcina i-microseconds ye-200, kwaye ukususa i-OST ye-cross-level encapsulation inokugcina amashumi e-microseconds, kwaye isebenzise ngokunengqiqo i-hubspoke topology kwiinkonzo eziphambili. ukuqinisekisa eyona ndlela imfutshane.Ngokuqinisekileyo, inokubambisana ne-MPLS kunye ne-QOS kwinqanaba le-IP ukuze uzame ukuqinisekisa ukuba ukulibaziseka kwinqanaba lokuthunyelwa kwedatha kungcono.
I-3.Ubuninzi obuphezulu, i-U eyodwa, okanye i-2U, inokufezekisa i-bandwidth ukuya kwi-T, i-DWDM i-optical layer kunye ne-signal signal layer decoupling, ukuphucula i-interface ye-density yesixhobo, kunye nokunciphisa ubungakanani bemodyuli ye-optical.Ngokomzekelo, ukusetyenziswa kweemodyuli ze-QSFP28 optical kunokuqinisekisa ukuba i-100G yokukwazi ukufikelela kwisixhobo esisodwa iphuculwe kakhulu, kwaye ukusetyenziswa kweemodyuli ze-CFP2 zokukhanya kwelanga kwicala lomgca kunokuqinisekisa ukuba i-bandwidth yokuhanjiswa kwesixhobo esipheleleyo siphuculwe, i-1U inakho. ibe 1.6T, 3.2T.Okwangoku, iimveliso ezininzi ezinxulumene nazo zivele kwihlabathi, njenge-ADVA, i-coriant, i-ciena kunye nezinye iinkampani.Ewe kunjalo, iHuawei yasekhaya ikhuphe iimveliso ezinxulumene ne-902.Nangona kunjalo, ekugqityweni kweli nqaku, kubonakala ngathi uvavanyo lokufikelela kwinethiwekhi yeSebe lezoShishino kunye neTekhnoloji yoLwazi alukagqitywa.Ukuxinana okuphezulu kuya kubangela ukusetyenziswa kwamandla aphezulu kunye nokutshatyalaliswa kobushushu.Ke ngoko, indlela yokuqala ye-OTN yokuphelisa ubushushu yomoya wasekhohlo nasekunene ngaphakathi nangaphandle, kunye nomoya onyukayo naphantsi ngaphakathi nangaphandle kufuneka ilahlwe.
Iimfuno zokupholisa isixhobo.
4. Ukuthunyelwa ngokukhawuleza, usebenzisa i-IDC esemgangathweni ye-19-intshi ye-rack, efana nohlobo lweeseva eziqhelekileyo, usebenzisa i-AC-220V yokunikezelwa kwamandla ngokuthe ngqo, ukuphelisa imfuno yamandla kunye nokuguqulwa kwekhabhinethi, kunye nokuqonda ukuba iimpahla zinokufakwa. iishelufu ngoko nangoko emva kokuba zifikile kwigumbi lekhompyutha, kwaye zinokuqwalaselwa emva kokuplaga kubonelelo lwamandla.ishishini, kwaye wenze umsebenzi olungileyo kumsebenzi wokwamkelwa osemgangathweni ukufezekisa ukuthunyelwa ngokukhawuleza.
5. Ukusebenza okulula kunye nokugcinwa, iimfuno zemodeli yeshishini le-DCI, umgama kumaziko edatha awuyi kuba kude kakhulu, kunye ne-complex management overhead, i-OAM kunye neminye imisebenzi ayimfuneko ukuba idlale indima enkulu kule meko, kunye nokucubungula okuyinkimbinkimbi kuyancitshiswa. Iphucula ukusebenza kakuhle kokuhanjiswa kwedatha, iphucula ixesha lokucwangcisa idatha, kwaye ineemfuno eziphezulu zetekhnoloji kwaye ivalwe ngakumbi.Ukudibanisa imiqondiso ngokuthe ngqo nge-Ethernet kuphelisa ubunzima obunzima be-OTN, ngoko ke iinjineli zenethiwekhi ye-IP yendabuko inokusebenza kwaye igcine inkqubo ye-DCI.Emva kokudibanisa ujongano olutsha oluya kumntla olufana nemodeli ye-YANG, i-REST API, kunye netconf, ulawulo lwezixhobo zothumelo lwe-DCI kunye nolawulo lwezixhobo zenethiwekhi ye-IP ziphuhliswa ngojongano olufanayo, ukuze kuqhutywe ngcono ulawulo lwenethiwekhi olumanyeneyo olusekwe kwiqonga.
6. Ukuthembeka okuphezulu, i-multi-physical routing kunye nokukhusela iteknoloji engaqapheliyo umaleko ophezulu uya kuqhubeka nokudlala indima kwinethiwekhi yokuhanjiswa kwe-DCI.Ukungaphumeleli kwinqanaba lekhonkco elingaphantsi akufanele libe nefuthe kwiinkonzo ngaphandle kokuba ziphazamiseke ngokupheleleyo.Umbono okanye impembelelo, nokuba kukutshintsha kokukhusela, i-jitter yekhonkco, ukunyuka kokulibaziseka, njl.
Ixesha lokuposa: Feb-13-2023