Mgwirizano wamitundu yambiri wa QSFP-DD umazindikira zolumikizira zolumikizana ziwiri: CS, SN, ndi MDC.
Cholumikizira cha MDC cha US Conec chimachulukitsa kachulukidwe ndi zolumikizira zitatu pa LC.MDC yamitundu iwiri imapangidwa ndiukadaulo wa 1.25-mm ferrule.
Wolemba Patrick McLaughlin
Pafupifupi zaka zinayi zapitazo, gulu la ogulitsa 13 linapanga QSFP-DD (Quad Small Form-Factor Pluggable Double Density) Multi-source agreement (MSA) Group, ndi cholinga chopanga ma transceiver optical optical QSFP.M'zaka kuyambira pomwe idakhazikitsidwa, gulu la MSA lapanga ma QSFPs kuti athandizire 200- ndi 400-Gbit/sec Ethernet application.
Ukadaulo wam'badwo wakale, ma module a QSFP28, amathandizira 40- ndi 100-Gbit Ethernet ntchito.Amakhala ndi mayendedwe anayi amagetsi omwe amatha kugwira ntchito pa 10 kapena 25 Gbits / sec.Gulu la QSFP-DD lakhazikitsa ndondomeko za misewu isanu ndi itatu yomwe imagwira ntchito mpaka 25 Gbits / sec kapena 50 Gbits / sec-yothandizira 200 Gbits / sec ndi 400 Gbits / sec, motsatira, pamodzi.
Mu Julayi 2019 gulu la QSFP-DD MSA linatulutsa mtundu 4.0 wa Common Management Interface Specification (CMIS).Gululi linatulutsanso mtundu wa 5.0 wa mawonekedwe ake a hardware.Gululo lidalongosola panthawiyo, "Pamene kukhazikitsidwa kwa 400-Gbit Ethernet kukukula, CMIS idapangidwa kuti ikwaniritse mawonekedwe osiyanasiyana a mawonekedwe a gawo, magwiridwe antchito ndi ntchito, kuyambira pamisonkhano yamkuwa yamkuwa kupita ku DWDM yogwirizana [dense wavelength-division multiplexing. ] ma module.CMIS 4.0 itha kugwiritsidwa ntchito ngati mawonekedwe wamba ndi zina za 2-, 4-, 8-, ndi 16-lane mawonekedwe, kuphatikiza pa QSFP-DD.
Kuphatikiza apo, gululi lidazindikira kuti mtundu wa 5.0 wamatchulidwe ake "amaphatikiza zolumikizira zatsopano, SN ndi MDC.QSFP-DD ndiye premier 8-lane data center module form factor.Machitidwe opangidwira ma module a QSFP-DD amatha kukhala kumbuyo-ogwirizana ndi mawonekedwe a QSFP omwe alipo ndipo amapereka kusinthasintha kwakukulu kwa ogwiritsa ntchito mapeto, opanga mapulatifomu ndi ophatikiza. "
Scott Sommers, membala woyambitsa komanso wapampando wa QSFP-DD MSA, adati, "Kupyolera mu mgwirizano wanzeru ndi makampani athu a MSA, tikupitiriza kuyesa kugwirizana kwa ma modules ambiri ogulitsa, zolumikizira, makola ndi zingwe za DAC kuti titsimikizire zamphamvu. chilengedwe.Tili odzipereka kupanga ndikupereka mapangidwe amibadwo yotsatira omwe amasintha ndikusintha kwaukadaulo. ”
Cholumikizira cha SN ndi MDC chidalumikizana ndi cholumikizira cha CS ngati njira zolumikizirana ndi gulu la MSA.Onse atatu ndi zolumikizira ziwiri zomwe zimadziwika ngati mawonekedwe ang'onoang'ono (VSFF).
Mgwirizano wa MDC
US Conecimapereka cholumikizira cha EliMent cha MDC.Kampaniyo imalongosola EliMent kuti "idapangidwa kuti ithetse zingwe za multimode ndi singlemode fiber mpaka 2.0 mm m'mimba mwake.Cholumikizira cha MDC chimapangidwa ndi ukadaulo wotsimikiziridwa wa 1.25-mm wogwiritsidwa ntchito pazolumikizira zamagetsi za LC, zomwe zimakwaniritsa zofunikira za IEC 61735-1 Grade B zotayika."
US Conec ikufotokozanso kuti, "Ma MSA angapo omwe akubwera atanthauzira zomanga zomwe zimafunikira cholumikizira chapawiri chokhala ndi phazi laling'ono kuposa cholumikizira cha LC.Kukula kocheperako kwa cholumikizira cha MDC kudzalola kuti transceiver yamtundu umodzi avomereze zingwe zingapo za MDC patch, zomwe zimafikirika payekhapayekha panjira yolumikizira.
"Mawonekedwe atsopanowa athandizira zingwe zinayi za MDC pamtundu wa QSFP ndi zingwe ziwiri za MDC pamtundu wa SFP.Kuchulukirachulukira kolumikizira pa module/panel kumachepetsa kukula kwa hardware, zomwe zimadzetsa kutsika kwa ndalama ndi ndalama zogwirira ntchito.Nyumba ya 1-rack-unit imatha kukhala ndi ulusi 144 wokhala ndi zolumikizira ndi ma adapter a LC.Kugwiritsa ntchito cholumikizira chaching'ono cha MDC kumawonjezera kuchuluka kwa fiber mpaka 432 pamalo omwewo 1 RU. "
Kampaniyo imayendera nyumba zolimba za cholumikizira cha MDC, kuumba molunjika kwambiri, komanso kutalika kwa chinkhoswe - kunena kuti mawonekedwewa amalola MDC kupitilira zofunikira za Telcordia GR-326 monga cholumikizira cha LC.MDC imaphatikizapo kansalu-koka boot yomwe imalola oyikapo kuti alowetse ndi kuchotsa cholumikizira m'malo olimba, otsekedwa popanda kukhudza zolumikizira zoyandikana nazo.
MDC imathandizanso kusinthika kosavuta kwa polarity, popanda kuwonetsa kapena kupotoza ulusi."Kuti musinthe polarity," US Conec akufotokoza, "kokani boot kuchokera pa cholumikizira nyumba, tembenuzani boot madigiri 180, ndikugwirizanitsanso gulu la boot kubwerera ku nyumba yolumikizira.Zizindikiro za polarity pamwamba ndi mbali ya cholumikizira zimapereka chidziwitso cha polarity yosinthidwa. "
US Conec itayambitsa cholumikizira cha MDC mu February 2019, kampaniyo idati, "Kapangidwe kamakono kolumikizira kameneka kamayambitsa nthawi yatsopano yolumikizana ndi ma fiber awiri pobweretsa kachulukidwe osayerekezeka, kuyika / kutulutsa kosavuta, kusanja kwamunda komanso kukwanira bwino. magwiridwe antchito amtundu wa EliMent mtundu wa single-fiber connector portfolio.
"Ma adapter a MDC okhala ndi madoko atatu amalumikizana mwachindunji ndi ma adapter a duplex LC, ndikuwonjezera kuchuluka kwa ulusi ndi katatu," US Conec inapitiliza."Mawonekedwe atsopanowa athandizira zingwe zinayi za MDC pamtundu wa QSFP ndi zingwe ziwiri za MDC pamtundu wa SFP."
CS ndi SN
Zolumikizira za CS ndi SN ndizinthu zaSenko Advanced Components.Mu cholumikizira cha CS, ma ferrules amakhala mbali ndi mbali, ofanana ndi masanjidwe a cholumikizira cha LC koma chocheperako kukula kwake.Mu cholumikizira cha SN, ma ferrule amayikidwa pamwamba ndi pansi.
Senko amayambitsa CS mu 2017. Mu pepala loyera lomwe linalembedwa ndi eOptolink, Senko akufotokoza kuti, "Ngakhale kuti LC duplex connectors ingagwiritsidwe ntchito mu QSFP-DD transceiver modules, bandwidth yotumizira imakhala yochepa pa injini imodzi ya WDM pogwiritsa ntchito 1:4 mux/demux kuti mufikire kutumiza kwa 200-GbE, kapena 1:8 mux/demux kwa 400 GbE.Izi zimawonjezera mtengo wa transceiver ndi zofunika kuziziziritsa pa transceiver.
"Cholumikizira chaching'ono cholumikizira cha CS cholumikizira chimalola awiri aiwo kuti akhazikike mkati mwa gawo la QSFP-DD, lomwe zolumikizira za LC duplex sizingakwaniritse.Izi zimalola kupanga injini yapawiri ya WDM pogwiritsa ntchito 1: 4 mux / demux kuti ifike ku 2 × 100-GbE kutumiza, kapena 2 × 200-GbE kutumiza pa transceiver imodzi ya QSFP-DD.Kuphatikiza pa ma transceivers a QSFP-DD, cholumikizira cha CS chimagwiranso ntchito ndi OSFP [octal small form-factor pluggable] ndi COBO [Consortium for On Board Optics].
Dave Aspray, Senko Advanced Components 'woyang'anira malonda ku Ulaya, posachedwapa analankhula za kugwiritsa ntchito zolumikizira za CS ndi SN kuti zifike pa liwiro la 400 Gbits / sec."Tikuthandiza kuchepetsa kutsika kwa malo omwe ali ndi kachulukidwe kakang'ono kwambiri pochepetsa ma fiber," adatero."Malo omwe alipo pano amagwiritsa ntchito kwambiri zolumikizira za LC ndi MPO ngati njira yolumikizirana kwambiri.Izi zimapulumutsa malo ambiri poyerekeza ndi zolumikizira wamba za SC ndi FC.
"Ngakhale zolumikizira za MPO zitha kukulitsa mphamvu popanda kukulitsa malo, ndizovuta kupanga komanso zovuta kuyeretsa.Tsopano timapereka zolumikizira zokulirapo zomwe zimakhala zolimba m'munda momwe zidapangidwira pogwiritsa ntchito ukadaulo wotsimikiziridwa, ndizosavuta kuzigwira ndikuyeretsa, komanso zimapereka mapindu opulumutsa malo.Mosakayikira iyi ndi njira yopitira patsogolo.”
Senko akufotokoza cholumikizira cha SN ngati njira yolumikizirana kwambiri ndi 3.1-mm.Imathandizira kulumikizana kwa ma fiber 8 mu transceiver ya QSFP-DD.
"Ma transceivers opangidwa ndi MPO masiku ano ndi msana wa malo opangira deta, koma mapangidwe a data center akusintha kuchoka ku chitsanzo cha hierarchical kupita ku chitsanzo cha tsamba ndi msana," Aspray anapitiriza."Muchitsanzo cha tsamba ndi msana, ndikofunikira kuthyola mayendedwe amtundu uliwonse kuti mulumikizane ndi masiwichi a msana ndi masiwichi aliwonse amasamba.Pogwiritsa ntchito zolumikizira za MPO, izi zingafune gulu lapadera lokhala ndi makaseti ophulika kapena zingwe zoduka.Chifukwa ma transceivers opangidwa ndi SN adasweka kale pokhala ndi zolumikizira 4 za SN pa mawonekedwe a transceiver, amatha kulumikizidwa mwachindunji.
"Zosintha zomwe ogwiritsira ntchito amapangira malo awo opangira ma data tsopano zitha kuwatsimikizira mtsogolo motsutsana ndi kuchuluka kosapeweka, chifukwa chake ndi lingaliro labwino kuti ogwiritsa ntchito aganizire zopereka mayankho ochulukirapo ngati zolumikizira za CS ndi SN - ngakhale sizofunikira. kumapangidwe awo apano a data center."
Patrick McLaughlinndiye mkonzi wathu wamkulu.
Nthawi yotumiza: Mar-13-2020
