Okwangoku, iimodyuli ze-IO ze-SFP28 / SFP56 kunye ne-QSFP28 / QSFP56 zisetyenziselwa ikakhulu ukudibanisa utshintsho kunye nokutshintsha kunye neeseva kwiikhabhinethi eziqhelekileyo kwiimarike.Ngeminyaka yobudala be-56Gbps izinga, ukwenzela ukuba baqhube ubuninzi be-port density, abantu baye baphuhlisa ngakumbi imodyuli ye-QSFP-DD IO ukufezekisa umthamo we-400G we-port.Ngokuphindwe kabini kwezinga lomqondiso, umthamo we-port ye-QSFP DD imodyuli iphindwe kabini kwi-800G, ebizwa ngokuba yi-OSFP112.Ihlanganiswe ngamashaneli asibhozo anesantya esiphezulu, kwaye izinga lokudluliselwa kwesiteshi esisodwa linokufikelela kwi-112G PAM4.Ireyithi yokuhanjiswa kwepakethe yonke ifikelela kwi-800G.Umva uhambelana NE-OSFP56, xa kuthelekiswa nexesha elifanayo ukuphinda kabini isantya, ukuhlangabezana nomgangatho wombutho we-IEEE 802.3CK;Ngenxa yoko, ilahleko yekhonkco iya kunyuka ngokukhawuleza kwaye umgama wokuhanjiswa kwemodyuli ye-CABLE IO yobhedu iya kucuthwa ngakumbi.Ngokusekelwe kwimithintelo ebonakalayo ebonakalayo, iqela le-IEEE 802.3CK, eliqulunqa inkcazo ye-112G, yanciphisa ubude obuninzi bekhonkco yekhebula yobhedu ukuya kwiimitha ezi-2 ngesiseko se-56G ikhebula le-IO kunye nesantya esiphezulu seemitha ezi-3.
QSFP-DD X 2 port 1.6Tbps ibhodi yokuvavanya
I-QQSFP -DD 800G iza ngokuchasene nomoya
Ubunakho beziko ledatha bumiselwa ziiseva, utshintsho, kunye nemiba yoqhagamshelo elungelelana kwaye ityhalana ukuya ngokukhawuleza, ukukhula okuphantsi kweendleko.Ukutshintsha itekhnoloji yeyona nto iphambili yokuqhuba iminyaka emininzi.Njengoko i-OFC2021 ifikelela esiphelweni kutshanje, abavelisi bonxibelelwano lwamehlo abaqhelekileyo abanje nge-Intel, Finisar, Xechuang, Opticexpress kunye ne-New Yisheng bonke babonise iimodyuli ze-800G zothotho lweemodyuli.Ngelo xesha, iinkampani ze-optical chip zangaphandle zibonise iimveliso eziphezulu ze-chip ze-800G, kwaye isicwangciso sendabuko sisenokuba nendawo kwixesha le-800G.Sicinga ukuba i-800G indlela ye-teknoloji ye-optical module icacile ngakumbi, i-800GDR8 kunye ne-2 * FR4 inamandla amaninzi;Njengoko i-OFC2021 imodyuli ye-optical engundoqo kunye neenkampani ze-optical chip ziye zasungula iimveliso ezintsha emva kwenye, indawo yexesha kunye nendlela yeteknoloji yophuculo lwe-800G ichaziwe.Ireyithi yoshishino lwemodyuli ye-data center iyaqhubeka nokuphindaphinda, kwaye uphawu lokukhula kwexesha elide luye lwamiselwa.Sikholelwa ukuba kwixesha ledijithali kunye nobukrelekrele, ukuqhuma okuqhubekayo kwetrafikhi yedatha yedatha kwazisa imfuno yokuqhubeka nokuphindaphinda kweemodyuli ze-optical.Indlela yeteknoloji ecacileyo ye-800G ibonisa ukuba i-400G iya kuba yinto enkulu.
Xa umlinganiselo wesignali we-25Gbps uphuculwe kwizinga lesignali ye-56Gbps yangoku, ngenxa yokuqaliswa kwe-PAM4 (i-Pulse Amplitude Modulation) inkqubo yesignali (iqela le-IEEE 802.3BS), Inqanaba eliphambili le-frequency yesignali ehanjiswe kwi-Serdes Ethernet ikhonkco ihambela phezulu kuphela. ukusuka kwi-12.89ghz ukuya kwi-13.28ghz, kwaye indawo yophawu olusisiseko ayitshintshi kakhulu.Iinkqubo ezinokuxhasa ukuhanjiswa kakuhle kweempawu ze-25Gbps zinokuphuculwa ukuya kwi-56Gbps imilinganiselo yesignali kunye nokulungiswa okuncinci.Ukuphucula ukusuka kwi-56Gbps izinga lesignali ukuya kwi-112Gbps isantya somqondiso akulula kangako.Inkqubo yomqondiso we-PAM4 yaziswa xa umgangatho wezinga le-56Gbps uphuhlisiwe uya kusetyenziswa kwakhona kwiireyithi ze-112Gbps.Oku kutshintsha indawo esisiseko ye-frequency point ye-112Gbps isignali ye-Ethernet ukuya kwi-26.56ghz, ephindwe kabini kumlinganiselo wesignali ye-56Gbps.Kwisizukulwana se-112Gbps izinga, iimfuno zeteknoloji yekhebula ziya kujongana novavanyo olunzima kakhulu.Okwangoku, i-400Gbps intambo ye-high-speed cable ixhunyiwe kwimveliso.Iibrendi zakwangoko ziziimpawu zangaphandle, ezinje ngeTE, LEONI, MOLEX, Amphenol, njl.Ukususela kwinkqubo yokuvelisa, izixhobo kunye nezixhobo, senze izinto ezininzi ezintsha.Okwangoku, kukho amashishini asekhaya enza i-800G ikhebula lobhedu, kodwa asizange siqokelele kakhulu.I-Shenzhen Hongteda, i-Dongguan Zhongyou Electronics, i-Dongguan Jinxinuo, i-Shenzhen Simic Communication, njl., kodwa ubunzima obukhoyo bobugcisa buyinxalenye ye-wire part.Okwangoku, kunzima kakhulu ukusombulula iiparamitha ezisebenza rhoqo zombane kunye neemfuno zokuthamba kweentambo zentambo ngaxeshanye.Intambo yobhedu yeDAC iya kujongana nexesha lophuhliso olukhawulezayo.Bambalwa kuphela abavelisi bocingo bendawo.
Imakethi itshintsha ngokukhawuleza, kwaye iya kuvela ngokukhawuleza nakwixesha elizayo.Iindaba ezilungileyo kukuba inkqubela phambili ebalulekileyo kwaye ethembisayo yenziwe, ukusuka kwimigangatho yemigangatho ukuya kwishishini, ukwenzela ukuba amaziko edatha ahambe kwi-400GB kunye ne-800GB.Kodwa ukususa imiqobo yetekhnoloji sisiqingatha kuphela somngeni.Esinye isiqingatha lixesha.Nje ukuba ukugweba kakubi kwenzeke, iindleko ziya kuba phezulu.Eyona nto iphambili kwiziko ledatha yasekhaya ekhoyo yi-100G.Phakathi kwamaziko edatha ye-100G esetyenzisiweyo, i-25% yobhedu, i-50% i-fiber ye-multi-mode, kunye ne-25% i-fiber-module eyodwa.La manani okwethutyana akachanekanga, kodwa imfuno ekhulayo ye-bandwidth, umthamo, kunye ne-latency ephantsi iqhuba ukufuduka kwizantya zenethiwekhi ezikhawulezayo.Ke minyaka le, ukuguquguquka kunye nokusebenza kwamaziko amakhulu edatha yelifu luvavanyo.Okwangoku, i-100GB ikhukula kwimarike, kunye ne-400GB ekulindeleke kunyaka ozayo.Nangona kunjalo, ukuhamba kwedatha kusaqhubeka nokunyuka, uxinzelelo kumaziko edatha luya kuqhubeka nokunyuka, emva kwe-400G, i-QSFP-DD 800G ifikile.
%2NXCT3.png)
Ixesha lokuposa: Aug-16-2022