Okwangoku, iimodyuli ze-IO ze-SFP28/SFP56 kunye ne-QSFP28/QSFP56 zisetyenziswa kakhulu ukuqhagamshela iiswitshi kunye neeswitshi kunye neeseva kwiikhabhathi eziphambili kwimarike. Kwiminyaka yesantya se-56Gbps, ukuze kulandelwe uxinano oluphezulu lwezibuko, abantu baye baphuhlisa ngakumbi imodyuli ye-QSFP-DD IO ukufikelela kumthamo wezibuko we-400G. Ngokuphindaphindwa kwesantya sesignali, umthamo wezibuko wemodyuli ye-QSFP DD uphindwe kabini ukuya kwi-800G, ebizwa ngokuba yi-OSFP112. Ipakishwe ngeetshaneli ezisibhozo zesantya esiphezulu, kwaye izinga lokudluliselwa kwetshaneli enye linokufikelela kwi-112G PAM4. Izinga lokudluliselwa lilonke lephakheji lifikelela kwi-800G. Ukubuyela umva kuhambelana ne-OSFP56, xa kuthelekiswa nexesha elifanayo lokuphindaphinda isantya, hlangabezana nomgangatho wokudibana kwe-IEEE 802.3CK; Ngenxa yoko, ukulahleka kwekhonkco kuya kwanda kakhulu kwaye umgama wokudluliselwa kwemodyuli ye-CABLE IO yekopolo engasebenziyo uya kufinyezwa ngakumbi. Ngokusekelwe kwimida ebonakalayo, iqela le-IEEE 802.3CK, elaqulunqa iinkcukacha ze-112G, linciphise ubude obuphezulu bonxibelelwano lwentambo yobhedu ukuya kwiimitha ezi-2 ngokusekelwe kwintambo yobhedu ye-56G IO enesantya esiphezulu seemitha ezi-3.
Ibhodi yovavanyo ye-QSFP-DD X 2 port 1.6Tbps
I-QQSFP -DD 800G isondela emoyeni
Amandla eziko ledatha amiselwa ziiseva, iiswitshi, kunye nezinto zonxibelelwano ezilungelelanisa kwaye zityhalelana ekukhuleni okukhawulezayo, okungabizi kakhulu. Ubuchwepheshe bokutshintsha bube yeyona nto iphambili iminyaka emininzi. Njengoko i-OFC2021 iphela kutshanje, abavelisi bonxibelelwano lwe-optical abaphambili abafana ne-Intel, i-Finisar, i-Xechuang, i-Opticexpress kunye ne-New Yisheng bonke babonise iimodyuli ze-optical ze-800G series. Kwangaxeshanye, iinkampani ze-optical chip zaphesheya zibonise iimveliso ze-chip eziphezulu ze-800G, kwaye iskimu sendabuko sisenokuba nendawo kwixesha le-800G. Sicinga ukuba indlela yetekhnoloji ye-optical module ye-800G icacile ngakumbi, i-800GDR8 kunye ne-2 * FR4 zinamandla amakhulu; Njengoko iinkampani ze-OFC2021 mainstream optical module kunye ne-optical chip ziqalise iimveliso ezintsha enye emva kwenye, i-time node kunye nendlela yetekhnoloji eqhelekileyo yokuphucula i-800G ichaziwe. Izinga loshishino lwe-optical module ye-optical center liyaqhubeka nokuphindaphinda, kwaye uphawu lokukhula kwexesha elide luchaziwe. Sikholelwa ukuba kwixesha lokwenziwa kwedijithali kunye nobukrelekrele, ukuqhuma okuqhubekayo kwethrafikhi yeziko ledatha kuye kwazisa imfuno yokuphindaphinda okuqhubekayo kweemodyuli ze-optical. Indlela ecacileyo yetekhnoloji ye-800G ibonisa ukuba i-400G iya kuba nkulu.
Xa izinga lesignali ye-25Gbps liphuculwe ukuya kwinqanaba lesignali ye-56Gbps yangoku, ngenxa yokwaziswa kwenkqubo yesignali ye-PAM4 (Pulse Amplitude Modulation) (iqela le-IEEE 802.3BS), inqaku le-frequency elisisiseko lesignali edluliselwe kwikhonkco le-Serdes Ethernet linyuka kuphela ukusuka kwi-12.89ghz ukuya kwi-13.28ghz, kwaye inqaku le-frequency elisisiseko lesignali alitshintshi kakhulu. Iinkqubo ezinokuxhasa ukuhanjiswa okulungileyo kwezibonakaliso ze-25Gbps zinokuphuculwa ukuya kumazinga esignali ye-56Gbps ngokwenziwa ngcono kancinci. Ukuphucula ukusuka kwinqanaba lesignali ye-56Gbps ukuya kwinqanaba lesignali ye-112Gbps akulula kangako. Inkqubo yesignali ye-PAM4 eyaziswa xa umgangatho wezinga le-56Gbps wawuphuhliswa kusenokwenzeka ukuba isetyenziswe kwakhona kumazinga e-112Gbps. Oku kutshintsha inqanaba le-frequency elisisiseko lesignali ye-112Gbps ye-Ethernet ukuya kwi-26.56ghz, eliphindwe kabini kunezinga lesignali ye-56Gbps. Kwimveliso yezinga le-112Gbps, iimfuno zobuchwepheshe bekhebula ziya kujongana novavanyo olunzima ngakumbi. Okwangoku, intambo yesantya esiphezulu ye-400Gbps iqhagamshelwe kwimveliso. Iimpawu ezivuthiweyo zakuqala ziimpawu zangaphandle, ezifana ne-TE, i-LEONI, i-MOLEX, i-Amphenol, njl. Iimpawu zasekhaya nazo ziqalile ukudlula kwiminyaka yakutshanje. Ukususela kwinkqubo yokuvelisa, izixhobo kunye nezixhobo, senze izinto ezintsha ezininzi. Okwangoku, kukho amashishini asekhaya avelisa intambo yobhedu ye-800G, kodwa asiqokelelanga kakhulu. I-Shenzhen Hongteda, i-Dongguan Zhongyou Electronics, i-Dongguan Jinxinuo, i-Shenzhen Simic Communication, njl., kodwa ubunzima obukhoyo bobuchwephesha bukwinxalenye yentambo engenanto. Okwangoku, kunzima ukusombulula iiparameter zokusebenza kombane ezisebenza rhoqo kunye neemfuno zokuthamba kwentambo ngaxeshanye. Intambo yobhedu ye-DAC iya kujongana nexesha lophuhliso olukhawulezileyo. Kukho abavelisi bentambo basekuhlaleni abambalwa kuphela.
Imakethi itshintsha ngokukhawuleza, kwaye iza kutshintsha ngokukhawuleza kwixesha elizayo. Iindaba ezimnandi zezokuba kwenziwe inkqubela phambili ebalulekileyo nethembisayo, ukusuka kwimigangatho ukuya kushishino, ukuvumela amaziko edatha ukuba atshintshele kwi-400GB kunye ne-800GB. Kodwa ukususa imiqobo yetekhnoloji sisiqingatha nje somceli mngeni. Esinye isiqingatha lixesha. Nje ukuba kuvele ukungagwebi kakuhle, iindleko ziya kuba phezulu. Eyona nto iphambili kwiziko ledatha lasekhaya elikhoyo yi-100G. Phakathi kwamaziko edatha e-100G asetyenzisiweyo, ama-25% yi-copper, ama-50% yi-multi-mode fiber, kwaye ama-25% yi-single-module fiber. La manani exesha alichanekanga, kodwa imfuno ekhulayo ye-bandwidth, umthamo, kunye ne-latency ephantsi iqhuba ukufuduka ukuya kwisantya senethiwekhi esikhawulezayo. Ngoko ke minyaka le, ukuguquguquka kunye nokusebenza kakuhle kwamaziko edatha e-cloud amakhulu luvavanyo. Okwangoku, i-100GB igcwele imarike, kwaye kulindeleke i-400GB kunyaka ozayo. Nangona kunjalo, ukuhamba kwedatha kusaqhubeka nokwanda, uxinzelelo kumaziko edatha luya kuqhubeka nokwanda, emva kwe-400G, i-QSFP-DD 800G ifikile.
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Ixesha lokuthumela: Agasti-16-2022
