Isivumelwano se-QSFP-DD semithombo eminingi samukela izixhumi ezintathu zokubuka eziphindwe kabili: i-CS, SN, ne-MDC.
Isixhumi se-MDC ye-US Conec sikhuphula ukuminyana ngesici sezixhumi ezintathu phezu kwe-LC.I-MDC enezintambo ezimbili yakhiwe ngobuchwepheshe be-ferrule obuyi-1.25-mm.
Ibhalwe nguPatrick McLaughlin
Cishe eminyakeni emine edlule, iqembu labathengisi be-13 lakha i-QSFP-DD (i-Quad Small Form-factor Pluggable Double Density) yesivumelwano semithombo eminingi (MSA) Group, ngenhloso yokudala i-double-density QSFP optical transceiver.Eminyakeni kusukela ekusungulweni kwayo, iqembu le-MSA lidale imininingwane yokuthi ama-QSFP asekele izinhlelo zokusebenza ze-Ethernet ezingama-200- kanye ne-400-Gbit/sec.
Ubuchwepheshe besizukulwane sangaphambilini, amamojula we-QSFP28, asekela izinhlelo zokusebenza ze-Ethernet ze-40- ne-100-Gbit.Zinemizila emine kagesi engasebenza ku-10 noma 25 Gbits/sec.Iqembu le-QSFP-DD lisungule ukucaciswa kwemizila eyisishiyagalombili esebenza kufika ku-25 Gbits/sec noma 50 Gbits/sec—isekela u-200 Gbits/sec kanye no-400 Gbits/sec, ngokulandelanayo.
NgoJulayi 2019 iqembu le-QSFP-DD MSA likhiphe inguqulo 4.0 ye-Common Management Interface Specification (CMIS).Iqembu liphinde lakhipha inguqulo 5.0 yokucaciswa kwehadiwe.Iqembu lachaza ngaleso sikhathi, "Njengoba ukwamukelwa kwe-400-Gbit Ethernet kukhula, i-CMIS yayiklanyelwe ukumboza izinhlobonhlobo zezinto zemodyuli, ukusebenza kanye nezinhlelo zokusebenza, kusukela ekuhlanganiseni kwekhebula le-copper kuya ku-DWDM ehlangene [dense wavelength-division multiplexing. ] amamojula.I-CMIS 4.0 ingasetshenziswa njengesixhumi esibonakalayo esivamile ezinye izici zefomu le-2-, 4-, 8-, kanye ne-16-lane, ngaphezu kwe-QSFP-DD."
Ukwengeza, leli qembu liphawule ukuthi inguqulo 5.0 yokucaciswa kwayo kwehadiwe “ihlanganisa izixhumi ezintsha zokubona, i-SN ne-MDC.I-QSFP-DD iyisici sokuqala semojula yesikhungo sedatha yemigqa engu-8.Amasistimu aklanyelwe amamojula e-QSFP-DD angabuyela emuva-ahambisane nezinto ezikhona zefomu le-QSFP futhi anikeze ukuguquguquka okukhulu kubasebenzisi bokugcina, abaklami benkundla yenethiwekhi nabadidiyeli.”
UScott Sommers, oyilungu elingumsunguli kanye nosihlalo we-QSFP-DD MSA, uphawule wathi, “Ngokubambisana kwamasu nezinkampani zethu ze-MSA, siyaqhubeka nokuhlola ukusebenzisana kwamamojula abathengisi abaningi, izixhumi, amakheji nezintambo ze-DAC ukuze siqinisekise ukuqina. i-ecosystem.Sizibophezele ekuthuthukiseni nasekuhlinzekeni imiklamo yesizukulwane esilandelayo eguqukayo nesimo sobuchwepheshe.”
Isixhumi se-SN ne-MDC sijoyine isixhumi se-CS njengokuxhumana okubonwa yiqembu le-MSA.Zontathu ziyizixhumi eziyi-duplex ezibonakala njenge-form factor encane (VSFF).
Isixhumi seMDC
I-US Conecinikeza isixhumi se-MDC somkhiqizo we-EliMent.Le nkampani ichaza i-EliMent “njengeklanyelwe ukunqanyulwa kwezintambo ze-multimode ne-singlemode fiber ezifika ku-2.0 mm ububanzi.Isixhumi se-MDC sakhiwe ngobuchwepheshe obufakazelwe be-ferrule obungu-1.25-mm obusetshenziswa embonini yokuxhuma i-LC optical, ehlangabezana nezidingo ze-IEC 61735-1 zeBanga B zokulahlekelwa.
I-US Conec iqhubeka ichaza, “Ama-MSA amaningi asafufusa achaze izakhiwo ze-port-breakout ezidinga isixhumi se-duplex optical esinonyawo oluncane kunesixhumi se-LC.Usayizi oncishisiwe wesixhumi se-MDC uzovumela i-transceiver yohlelo olulodwa ukuthi yamukele izintambo eziningi ze-MDC, ezifinyeleleka ngazinye ngokuqondile kusixhumi esibonakalayo se-transceiver.
“Indlela entsha izosekela izintambo ezine ze-MDC ngayinye endaweni ye-QSFP kanye nezintambo ezimbili ze-MDC ngayinye endaweni ye-SFP.Ukuminyana kwesixhumi esikhuphukile kumojula/iphaneli kunciphisa usayizi wezingxenyekazi zekhompuyutha, okuholela emalini encishisiwe nezindleko zokusebenza.I-1-rack-unit house ingahlalisa amafayibha angu-144 ngezixhumi ze-LC duplex nama-adaptha.Ukusebenzisa isixhumi esincane se-MDC kwandisa isibalo sefayibha sifike ku-432 endaweni efanayo ye-RU eyi-1.
Inkampani incoma ukwakhiwa kwezindlu ezimazombezombe zesixhumi seMDC, ukubumba okunembayo okuphezulu, nobude bokusebenzisana—ithi lezi zimpawu zivumela iMDC ukuthi yeqe izimfuneko ezifanayo zeTelcordia GR-326 njengesixhumi seLC.I-MDC ihlanganisa i-push-pull boot evumela abafakeli ukuthi bafake futhi bakhiphe isixhumi ezindaweni eziqinile, ezivalekile ngaphandle kokuthinta izixhumi ezingomakhelwane.
I-MDC iphinde yenza kube lula ukuguqulwa kwe-polarity, ngaphandle kokuveza noma ukusonta imicu."Ukuze ushintshe i-polarity," kuchaza i-US Conec, "donsela ibhuthi kundlu yesixhumi, uzungezisa ibhuthi ngamadigri angu-180, bese uhlanganisa kabusha umhlangano webhuthi uyibuyisele endaweni yesixhumi.Izimpawu ze-polarity phezulu nasohlangothini lwesixhumi zinikeza isaziso sokuhlehliswa kwesixhumi polarity.”
Ngenkathi i-US Conec yethula isixhumi se-MDC ngoFebhuwari 2019, inkampani yathi, “Lokhu kuklanywa kwesixhumi sesimanje kuletha inkathi entsha ekuxhumekeni kwama-fiber amabili ngokuletha ukuminyana okungenakuqhathaniswa, ukufakwa okulula/ukukhipha, ukucushwa kwenkundla kanye nokufaneleka. ukusebenza kwebanga lenkampani yenethiwekhi kuphothifoliyo yesixhumi se-fiber eyodwa yomkhiqizo we-EliMent.
"Ama-adaptha e-MDC angamachweba amathathu angena ngqo ekuvulekeni kwephaneli ejwayelekile yama-adaptha e-LC e-duplex, okwandisa ukuminyana kwefayibha ngesici sokuthathu," kuqhuba i-US Conec."Ifomethi entsha izosekela izintambo ezine ze-MDC ngayinye endaweni ye-QSFP kanye nezintambo ezimbili ze-MDC endaweni ye-SFP."
CS kanye ne-SN
Izixhumi ze-CS ne-SN ziyimikhiqizo yeIzingxenye Ezithuthukile ze-Senko.Kusixhumi se-CS, ama-ferrules ahlala ngapha nangapha, ngokufanayo ngesakhiwo sesixhumi se-LC kodwa ngosayizi omncane.Kusixhumi se-SN, ama-ferrules astakwe phezulu naphansi.
USenko wethula i-CS ngo-2017. Ephepheni elimhlophe elibhalwe ngokuhlanganyela ne-eOptolink, uSenko uyachaza, “Nakuba izixhumi ze-LC duplex zingasetshenziswa kumamojula we-QSFP-DD transceiver, umkhawulokudonsa wokudlulisa kungenzeka ukhawulelwe ekwakhiweni kwenjini eyodwa ye-WDM noma kusetshenziswa i- 1:4 mux/demux ukuze kufinyelelwe ekudluliseni okungu-200-GbE, noma i-1:8 mux/demux ku-400 GbE.Lokhu kwandisa izindleko ze-transceiver kanye nesidingo sokupholisa ku-transceiver.
“Isixhumi esincanyana sezixhumi ze-CS sivumela ezimbili zazo ukuthi zifakwe ngaphakathi kwemojuli ye-QSFP-DD, izixhumi ze-LC duplex ezingakwazi ukuyifeza.Lokhu kuvumela ukuklama kwenjini ye-WDM ekabili esebenzisa i-1:4 mux/demux ukuze kufinyelelwe ukudluliselwa kwe-2×100-GbE, noma ukudluliselwa kwe-2×200-GbE ku-transceiver eyodwa ye-QSFP-DD.Ngaphezu kwama-transceivers e-QSFP-DD, isixhumi se-CS siphinde sihambisane ne-OSFP [octal small form-factor pluggable] kanye namamojula e-COBO [Consortium for On Board Optics].”
U-Dave Aspray, umphathi wezokuthengisa we-Senko Advanced Components' European, usanda kukhuluma ngokusetshenziswa kwezixhumi ze-CS ne-SN ukuze kufinyelelwe isivinini esifinyelela ku-400 Gbits/sec."Sisiza ekunciphiseni umkhondo wezikhungo zedatha ezinabantu abaningi ngokunciphisa izixhumi ze-fiber," esho.“Izikhungo zedatha zamanje zisebenzisa kakhulu inhlanganisela yezixhumi ze-LC ne-MPO njengesixazululo sokuminyana okuphezulu.Lokhu konga isikhala esiningi uma kuqhathaniswa nezixhumi ezijwayelekile ze-SC ne-FC.
“Yize izixhumi ze-MPO zingakhuphula umthamo ngaphandle kokwandisa umkhondo, ziwumsebenzi onzima ukukhiqiza futhi kuyinselele ukuyihlanza.Manje sinikeza izinhlobonhlobo zezixhumi ezihlangene kakhulu ezihlala isikhathi eside ensimini njengoba ziklanywe kusetshenziswa ubuchwepheshe obufakazelwe, kulula ukuziphatha nokuhlanza, futhi zinikeza izinzuzo ezinkulu zokonga isikhala.Ngokungangabazeki lena indlela eya phambili.”
I-Senko ichaza isixhumi se-SN njengesixazululo se-ultra-high-density duplex esinephimbo elingu-3.1-mm.Inika amandla ukuxhumeka kwamafayili angu-8 ku-transceiver ye-QSFP-DD.
“Ama-transceivers asekelwe ku-MPO anamuhla awumgogodla we-topography yesikhungo sedatha, kodwa umklamo wesikhungo sedatha uyashintsha usuka kumodeli ye-hierarchical ukuya kumodeli yeqabunga nomgogodla,” kuqhubeka i-Aspray."Kumodeli yeqabunga nomgogodla, kuyadingeka ukunqamula imigudu ngayinye ukuze kuxhunywe amaswishi omgogodla kunoma yiziphi izinguquko zamaqabunga.Ngokusebenzisa izixhumi ze-MPO, lokhu kuzodinga iphaneli yesichibi ehlukile enamakhasethi aphumayo noma izintambo zokuphuma.Ngenxa yokuthi ama-transceiver asekelwe ku-SN asevele ephukile ngokuba nezixhumi ze-SN ezingazodwana ezi-4 kusixhumi esibonakalayo se-transceiver, angagxushwa ngokuqondile.
"Izinguquko ezenziwa opharetha ezikhungweni zabo zedatha manje zingabafakazela ngekusasa ngokumelene nokwanda okungenakugwemeka kwesidingo, yingakho kuwumqondo omuhle ukuthi opharetha bacabangele ukufaka izixazululo ezixinene kakhulu njengezixhumi ze-CS ne-SN-ngisho noma kungadingeki. ekwakhiweni kwabo kwamanje kwesikhungo sedatha.”
UPatrick McLaughlinungumhleli wethu omkhulu.
Isikhathi sokuthumela: Mar-13-2020
