Ngokwezi mpawu, kukho izisombululo ze-DCI ezimbini eziqhelekileyo:
1. Sebenzisa izixhobo ze-DWDM ezicocekileyo, kwaye usebenzise i-color optical module + i-DWDM multiplexer/demultiplexer kwiswitshi. Kwimeko ye-single-channel 10G, ixabiso liphantsi kakhulu, kwaye ukhetho lwemveliso luninzi. I-10G color light module ikwikhaya. Sele ivelisiwe, kwaye ixabiso sele liphantsi kakhulu (enyanisweni, inkqubo ye-10G DWDM yaqala ukuthandwa kwiminyaka embalwa eyadlulayo, kodwa ngokufika kweemfuno ze-bandwidth ezinkulu, kwafuneka isuswe, kwaye i-100G color light module yayingekafumaneki. Ivele.) Okwangoku, i-100G isandula ukuqala ukuvela kwiimodyuli ze-color optical ezinxulumene neTshayina, kwaye ixabiso alikho phantsi ngokwaneleyo, kodwa iya kuhlala inegalelo elikhulu kwinethiwekhi ye-DCI.
2. Sebenzisa izixhobo ze-OTN zokudlulisa ezinoxinano oluphezulu, ziyi-220V AC, izixhobo ze-19-intshi, i-1~2U ephezulu, kwaye ukusasazwa kulula ngakumbi. Umsebenzi we-SD-FEC ucinyiwe ukunciphisa ukulibaziseka, kwaye ukhuseleko lokuhambisa kwi-optical layer lusetyenziselwa ukuphucula uzinzo, kwaye ujongano olulawulwayo oluya emantla lukwaphucula amandla ophuhliso lwemisebenzi yokwandisa izixhobo. Nangona kunjalo, itekhnoloji ye-OTN isagciniwe, kwaye ulawulo luya kuba nzima kakhulu.
Ukongeza, into eyenziwa ngabakhi benethiwekhi ye-DCI yokuqala ngoku kukwahlulahlula inethiwekhi yothumelo lwe-DCI, kubandakanya ukwahlulahlula i-optical kumaleko 0 kunye nombane kumaleko 1, kunye ne-NMS kunye nezixhobo zehardware zabavelisi bendabuko. Indlela yendabuko kukuba izixhobo zokucubungula umbane zomenzi othile kufuneka zisebenzisane nezixhobo ezifanayo ze-optical zomenzi, kwaye izixhobo zehardware kufuneka zisebenzisane nesoftware ye-NMS yomenzi yolawulo. Le ndlela yendabuko ineengxaki ezininzi ezinkulu:
1. Itekhnoloji ivaliwe. Ngokwethiyori, inqanaba le-optoelectronic linokwahlulwa omnye komnye, kodwa abavelisi bemveli abawahlukanisi ngabom ukuze balawule igunya letekhnoloji.
2. Ixabiso lenethiwekhi yothumelo lwe-DCI ligxile kakhulu kumaleko wokucubungula isignali yombane. Ixabiso lokuqala lokwakha le nkqubo liphantsi, kodwa xa umthamo wandiswa, umenzi uya kunyusa ixabiso phantsi kwesoyikiso sobungcali obukhethekileyo, kwaye iindleko zokwandisa ziya kunyuka kakhulu.
3. Emva kokuba umaleko we-optical wenethiwekhi yothumelo lwe-DCI usetyenzisiwe, unokusetyenziswa kuphela zizixhobo zombane zomenzi ofanayo. Izinga lokusetyenziswa kwezixhobo zezixhobo liphantsi, elingahambelani nolwalathiso lophuhliso lokudibanisa izixhobo zenethiwekhi, kwaye alilungelelani nokucwangciswa kwezixhobo zomaleko we-optical odibeneyo. Umaleko we-optical odibeneyo utyalwe ngokwahlukeneyo kwinqanaba lokuqala lokwakhiwa, kwaye awuthintelwa kukusetyenziswa kwexesha elizayo kwenkqubo yomaleko we-optical omnye ngabavelisi abaninzi, kwaye udibanisa ujongano oluya emantla lomaleko we-optical kunye netekhnoloji ye-SDN ukwenza ucwangciso lwezikhokelo zezixhobo zetshaneli kumaleko we-optical, Phucula ukuguquguquka kweshishini.
4. Izixhobo zenethiwekhi ziqhagamshela ngaphandle komthungo neqonga lolawulo lwenethiwekhi yenkampani ye-intanethi ngokuthe ngqo ngesakhiwo sedatha se-YANGmodel, esigcina utyalo-mali lophuhliso lweqonga lolawulo kwaye sisuse isoftware ye-NMS ebonelelwa ngumvelisi, ephucula ukusebenza kakuhle kokuqokelelwa kwedatha kunye nolawulo lwenethiwekhi.
Ngoko ke, ukuqhawulwa kwe-optoelectronic yindlela entsha yophuhliso lwenethiwekhi yothumelo lwe-DCI. Kwixesha elizayo elibonakalayo, umaleko we-optical wenethiwekhi yothumelo lwe-DCI unokuba yiteknoloji ye-SDN eyenziwe yi-ROADM+ ujongano olusenyakatho-ntshona, kwaye itshaneli inokuvulwa, icwangciswe kwaye ibuyiselwe ngokungacwangciswanga. Kuya kwenzeka ukusebenzisa izixhobo zombane ezixutyiweyo zabavelisi, okanye ukusetyenziswa okuxutyiweyo kwe-Ethernet interfaces kunye ne-OTN interfaces kwinkqubo efanayo yokujonga. Ngelo xesha, ukusebenza kakuhle komsebenzi ngokubhekiselele ekwandisweni kwenkqubo kunye notshintsho kuya kuphucuka kakhulu, kwaye umaleko we-optical uya kusetyenziswa. Kulula ukwahlulahlula, ulawulo lwe-logic yenethiwekhi lucacile, kwaye iindleko ziya kuncitshiswa kakhulu.
Kwi-SDN, eyona nto iphambili kukulawula kunye nokwabiwa kwezixhobo zenethiwekhi. Ngoko ke, zeziphi izixhobo zenethiwekhi yokudlulisa i-DWDM ezinokulawulwa kwinethiwekhi yokudlulisa i-DCI yangoku?
Kukho iindlela ezintathu, iindlela, kunye neebhendi (i-frequency). Ke ngoko, ukukhanya ngokusebenzisana kokukhanya + i-IP kwenziwa ngokulawula nokusasazwa kwezi ngongoma zintathu.
Iitshaneli ze-IP kunye ne-DWDM ziyaqhekeka, ngoko ke ukuba ubudlelwane obuhambelanayo phakathi kwekhonkco le-IP elinengqondo kunye netshaneli ye-DWDM bucwangciswe kwinqanaba lokuqala, kwaye ubudlelwane obuhambelanayo phakathi kwetshaneli kunye ne-IP kufuneka bulungiswe kamva, ungasebenzisa i-OXC. Le ndlela isetyenziselwa ukwenza utshintsho olukhawulezayo lwetshaneli kwinqanaba le-millisecond, olunokwenza umaleko we-IP ungazi. Ngokulawulwa kwe-OXC, ulawulo oluphakathi lwesixhobo setshaneli yokudlulisa kwisiza ngasinye lunokuphunyezwa, ukuze kusetyenziswane ne-SDN yeshishini.
Uhlengahlengiso lokwahlulahlula itshaneli enye kunye ne-IP yinxalenye encinci. Ukuba ucinga ngokulungelelanisa i-bandwidth ngelixa ulungisa itshaneli, ungayisombulula ingxaki yokulungisa iimfuno ze-bandwidth zeenkonzo ezahlukeneyo ngamaxesha ahlukeneyo. Phucula kakhulu izinga lokusetyenziswa kwe-bandwidth eyakhiweyo. Ke ngoko, ngelixa ulungelelanisa ne-OXC ukulungisa itshaneli, kunye ne-multiplexer kunye ne-demultiplexer yetekhnoloji yegridi eguquguqukayo, itshaneli enye ayisenawo ubude be-wavelength obuzinzileyo, kodwa ivumela ukuba igubungele uluhlu lwefrikhwensi olunokukhuliswa, ukuze kufezekiswe uhlengahlengiso oluguquguqukayo lobungakanani be-bandwidth. Ngaphezu koko, kwimeko yokusebenzisa iinkonzo ezininzi kwi-topology yenethiwekhi, izinga lokusetyenziswa kwefrikhwensi yenkqubo ye-DWDM linokuphuculwa ngakumbi, kwaye izixhobo ezikhoyo zingasetyenziswa ekugcwalisweni.
Ngenxa yezakhono zolawulo olutshintshayo lwezimbini zokuqala, ulawulo lwendlela yenethiwekhi yothumelo lunokunceda lonke i-topology yenethiwekhi ukuba ibe nozinzo oluphezulu. Ngokweempawu zenethiwekhi yothumelo, indlela nganye inezixhobo zetshaneli yothumelo ezizimeleyo, ngoko ke kubaluleke kakhulu ukulawula nokwabela iziteshi kwindlela nganye yothumelo ngendlela edibeneyo, eya kubonelela ngokukhethwa kweendlela ezifanelekileyo kwiinkonzo zeendlela ezininzi, kwaye kuphuculwe ukusetyenziswa kwezixhobo zetshaneli kuzo zonke iindlela. Njengakwi-ASON, igolide, isilivere kunye nobhedu zahlulwe kwiinkonzo ezahlukeneyo ukuqinisekisa uzinzo lwenqanaba eliphezulu leenkonzo.
Umzekelo, kukho inethiwekhi yeringi eyakhiwe ngamaziko edatha amathathu u-A, u-B, kunye no-C. Kukho inkonzo i-S1 (efana nenkonzo yedatha enkulu ye-intranet), ukusuka ku-A ukuya ku-B ukuya ku-C, ethatha amaza ayi-1 ~ 5 ale nethiwekhi yeringi, igagasi ngalinye line-bandwidth ye-100G, kwaye isithuba se-frequency yi-50GHz; kukho inkonzo i-S2 (inkonzo yenethiwekhi yangaphandle), Ukusuka ku-A ukuya ku-B ukuya ku-C, amaza ayi-6 ~ 9 ale nethiwekhi yeringi ahlala, igagasi ngalinye line-bandwidth ye-100G, kwaye isithuba se-frequency yi-50GHz.
Ngamaxesha aqhelekileyo, olu hlobo lwe-bandwidth kunye nokusetyenziswa kwetshaneli lunokwanelisa imfuno, kodwa xa ngamanye amaxesha, umzekelo, kongezwa iziko ledatha elitsha, kwaye ishishini lifuna ukufudusa isiseko sedatha ngexesha elifutshane, ngoko ke imfuno ye-intranet bandwidth ngeli xesha iya kuba iphindwe kabini, i-bandwidth yokuqala ye-500G (5 100G), ngoku ifuna i-bandwidth ye-2T. Emva koko itshaneli kwinqanaba lokudlulisela zinokubalwa kwakhona, kwaye itshaneli ezintlanu ze-400G zifakwa kumaleko wamaza. Isithuba sefrikhwensi yetshaneli nganye ye-400G sitshintshiwe ukusuka kwi-50GHz yokuqala ukuya kwi-75GHz. Nge-flexible grating ROADM kunye ne-multiplexer/demultiplexer, yonke indlela kwinqanaba lokudlulisela, ngoko ke ezi channel zintlanu zithatha izixhobo ze-spectrum ze-375GHz. Emva kokuba izixhobo ezikwinqanaba lothumelo zilungile, lungisa i-OXC ngeqonga lolawulo eliphakathi, kwaye ulungise iziteshi zothumelo ezisetyenziswa ngamaza okuqala e-1-5 emiqondiso yenkonzo ye-100G ukuya kwi-5 esandula ukulungiswa ngokulibaziseka kwinqanaba le-millisecond. Itshaneli yenkonzo ye-400G iyaphakama, ukuze umsebenzi wohlengahlengiso oluguquguqukayo lwe-bandwidth kunye netshaneli ngokweemfuno zenkonzo ye-DCI ugqitywe, nto leyo enokwenziwa ngexesha langempela. Kakade ke, izihlanganisi zenethiwekhi zezixhobo ze-IP kufuneka zixhase imisebenzi yohlengahlengiso lwe-100G/400G rate adjustable kunye ne-optical signal frequency (wavelength), engayi kuba yingxaki.
Ngokuphathelele itekhnoloji yenethiwekhi ye-DCI, umsebenzi onokugqitywa ngothumelo uphantsi kakhulu. Ukuze kufezekiswe inethiwekhi ye-DCI ekrelekrele ngakumbi, kufuneka yenziwe kunye ne-IP. Umzekelo, sebenzisa i-MP-BGP EVPN+VXLAN kwi-intranet ye-IP ye-DCI ukuze usasaze ngokukhawuleza inethiwekhi yomaleko wesi-2 kwii-DC, enokuhambelana kakhulu nezixhobo zenethiwekhi ezikhoyo kwaye ihlangabezane neemfuno zoomatshini abaqeshisayo ukuze bahambe ngokuguquguquka kwii-DC. ;Sebenzisa uthumelo lwecandelo kwinethiwekhi yangaphandle ye-IP ye-DCI ukwenza ucwangciso lwendlela yethrafikhi olusekwe kumahluko weshishini lomthombo, ukuhlangabezana neemfuno zokuboniswa kwethrafikhi enqamlezileyo ye-DC, ukubuyiselwa kwendlela ngokukhawuleza, kunye nokusetyenziswa kwe-bandwidth ephezulu; inethiwekhi yothumelo engaphantsi isebenzisana nenkqubo ye-OXC enemilinganiselo emininzi, xa ithelekiswa ne-ROADM yangoku eqhelekileyo, inokufezekisa umsebenzi wokuhlela indlela yenkonzo ecolekileyo; ukusetyenziswa kwetekhnoloji yokuguqula ubude bexesha lothumelo olungengombane kunokusombulula ingxaki yokuqhekeka kwezixhobo ze-channel spectrum. Ukuhlanganiswa kwezixhobo zomaleko ophezulu kunye nomaleko osezantsi wolawulo lweshishini kunye nokuthunyelwa, ukuthunyelwa okuguquguqukayo, kunye nokusetyenziswa kwezixhobo okuphuculweyo kuya kuba yindlela engenakuphepheka kwixesha elizayo. Okwangoku, ezinye iinkampani ezinkulu zasekhaya zinika ingqalelo kule ndawo, kwaye ezinye iinkampani ezikhethekileyo ezisaqalayo sele zenza uphando kunye nophuhliso lweemveliso zobugcisa ezinxulumene nazo. Ndiyathemba ukubona izisombululo ezinxulumene nazo zizonke kwimarike kulo nyaka. Mhlawumbi kungekudala, i-OTN nayo iya kunyamalala kwiinethiwekhi zeklasi zabathwali, ishiye i-DWDM kuphela.
Ixesha lokuthumela: Februwari-15-2023