Imvumelwano ye-QSFP-DD yemithombo emininzi iyanakana iziqhagamshelo ezintathu ze-duplex optical: i-CS, i-SN, ne-MDC.
Isidibanisi se-MDC yase-US Conec yonyusa ingxinano ngefaktha ye-3 ngaphezulu kweziqhagamshelo zeLC.I-MDC enefiber ezimbini yenziwe nge-1.25-mm ferrule technology.
NguPatrick McLaughlin
Phantse kwiminyaka emine edlulileyo, iqela labathengisi be-13 benza isivumelwano se-QSFP-DD (i-Quad Small Form-Factor Pluggable Double Density) ye-multi-source (MSA), ngenjongo yokudala i-transceiver optical ye-QSFP ephindwe kabini.Kwiminyaka ukususela ekusekweni kwayo, iqela le-MSA lenze iinkcukacha ze-QSFPs ukuxhasa izicelo ze-Ethernet ze-200 kunye ne-400-Gbit / sec.
I-teknoloji yesizukulwana sangaphambili, iimodyuli ze-QSFP28, inkxaso ye-40- kunye ne-100-Gbit Ethernet izicelo.Zineendlela ezine zombane ezinokusebenza kwi-10 okanye i-25 Gbits / sec.Iqela le-QSFP-DD liseke iinkcukacha kwiindlela ezisibhozo ezisebenza ukuya kwi-25 Gbits / sec okanye i-50 Gbits / sec-ixhasa i-200 Gbits / sec kunye ne-400 Gbits / sec, ngokulandelanayo, ngokubanzi.
NgoJulayi ka-2019 iqela le-QSFP-DD MSA likhuphe inguqulelo 4.0 yeNgcaciso ye-Common Management Interface Specification (CMIS).Iqela liphinde lakhupha inguqulo ye-5.0 yenkcazo ye-hardware yayo.Iqela lachaza ngelo xesha, "Njengoko ukwamkelwa kwe-400-Gbit Ethernet ikhula, i-CMIS yenzelwe ukugubungela uluhlu olubanzi lweemodyuli zefom yemodyuli, ukusebenza kunye nezicelo, ukusuka kwiindibano zeekhebula zethusi ukuya kwi-DWDM ehambelanayo [i-dense wavelength-division multiplexing. ] iimodyuli.I-CMIS 4.0 inokusetyenziswa njengonxibelelwano oluqhelekileyo ngezinye ii-2-, 4-, 8-, kunye ne-16-lane form factor, ukongeza kwi-QSFP-DD.”
Ukongeza, iqela liqaphele ukuba i-version 5.0 ye-hardware specication “ibandakanya iziqhagamshelo ezitsha ze-optical, i-SN kunye ne-MDC.I-QSFP-DD yinkulumbuso ye-8-lane yedatha yemodyuli yefom factor.Iinkqubo ezenzelwe iimodyuli ze-QSFP-DD zinokubuyela ngasemva-zihambelane nezinto ezikhoyo zefom ye-QSFP kwaye zibonelele ngokuguquguquka okuphezulu kubasebenzisi bokugqibela, abayili beqonga lenethiwekhi kunye nabahlanganisi.
UScott Sommers, ilungu elisekayo kunye nosihlalo we-QSFP-DD MSA, uthe, “Ngentsebenziswano ecwangcisiweyo kunye neenkampani zethu ze-MSA, siyaqhubeka nokuvavanya ukusebenzisana kweemodyuli zabathengisi abaninzi, izihlanganisi, iikheji kunye neentambo zeDAC ukuze siqinisekise ukomelela. inkqubo yendalo.Sizibophelele ekuphuhliseni nasekuboneleleni ngoyilo lwesizukulwana esilandelayo oluvela ngokutshintsha kwetekhnoloji. ”
Umdibaniso we-SN kunye ne-MDC wajoyina i-CS connector njenge-optical interfaces ezamkelwa liqela le-MSA.Zontathu ziziqhagamshelo eziphindwe kabini eziphawulwa njengeyona nto incinci kakhulu (VSFF).
Isidibanisi seMDC
US Conecibonelela ngesidibanisi seMDC yohlobo lwe-EliMent.Inkampani ichaza i-EliMent "njengeyilelwe ukupheliswa kweentambo ze-multimode kunye ne-singlemode fiber ukuya kwi-2.0 mm ububanzi.Isidibanisi se-MDC senziwa ngobuchwephesha obuvunyiweyo be-1.25-mm obusetyenziswa kushishino lwe-LC ye-optical connectors, ehlangabezana neemfuno ze-IEC 61735-1 zeBanga B zokulahleka.
I-US Conec ihlabela mgama icacisa, "Ii-MSA ezininzi ezivelayo ziye zachaza ulwakhiwo lwe-port-breakout olufuna isiqhagamshelo esiphindwe kabini esinonyawo oluncinci kunesiqhagamshelo seLC.Ubungakanani obuncitshisiweyo besidibanisi se-MDC buya kuvumela i-transceiver ene-single-array ukuba yamkele iintambo zeepatch ze-MDC ezininzi, ezikwaziyo ukufikelela kumntu ngamnye ngqo kwi-transceiver interface.
“Ifomathi entsha iya kuxhasa iikheyibhile ezine zeMDC nganye kwi-QSFP footprint kunye neentambo ezimbini ze-MDC ezikwi-SFP footprint.Ukuxinana komdibanisi okwandisiweyo kwimodyuli/iphaneli yehlisa ubungakanani behardware, nto leyo ekhokelela ekuncitshisweni kwenkunzi kunye neendleko zokusebenza.I-1-rack-unit-unit yezindlu inokuthatha iifiber ze-144 ezine-LC duplex connectors kunye ne-adapters.Ukusebenzisa umdibaniso omncinci we-MDC kwandisa i-fiber count ukuya kwi-432 kwindawo efanayo ye-RU ye-1. "
Inkampani ikhupha i-MDC edibeneyo yezindlu ezinqabileyo, ukubunjwa okuphezulu, kunye nobude bokubandakanya-ithi ezi mpawu zivumela i-MDC ukuba idlule iimfuno ezifanayo zeTelcordia GR-326 njenge-LC connector.I-MDC ibandakanya i-push-pull boot evumela ukuba abafakeli bafake kwaye bakhuphe umdibaniso kwiindawo eziqinileyo, ezivaliweyo ngaphandle kokuchaphazela izixhumi ezingabamelwane.
I-MDC ikwavumela ukuguqulwa okulula kwepolarity, ngaphandle kokuvezwa okanye ukujija imicu."Ukutshintsha i-polarity," i-US Conec iyacacisa, "tsala i-boot ukusuka kwisidibaniso sendlu, ujikeleze i-boot 180 degrees, kwaye uphinde udibanise indibano ye-boot kwi-connector house.Iimpawu zePolarity phezulu kunye necala lesidibanisi zibonelela ngesaziso sokubuyela umva kwepolarity yesiqhagamshelo. "
Xa i-US Conec yazisa isinxibelelanisi seMDC ngoFebruwari ka-2019, inkampani yathi, “Olu yilo lwangoku lolona nxibelelwano lungenisa ixesha elitsha kuqhagamshelo lweefayibha ezimbini ngokuzisa ingxinano engenakuthelekiswa nanto, ukufakwa ngokulula / ukutsalwa, ukucwangciswa kwentsimi kunye nokulunga. ukusebenza kwebakala lomthwali kwipotfoliyo yohlobo lwe-EliMent yefayibha enye.
"Iiadaptha ze-MDC ezineechwephesha ezintathu zihambelana ngokuthe ngqo kwiindawo zokuvula iipaneli eziqhelekileyo ze-duplex LC adapters, ukwandisa ubuninzi befiber nge-factor of three," i-US Conec yaqhubeka."Ifomathi entsha iya kuxhasa iintambo ezine zeMDC nganye kwindawo ye-QSFP kunye neentambo ezimbini zeMDC nganye kwindawo ye-SFP."
CS kunye ne-SN
I-CS kunye nezihlanganisi ze-SN zimveliso zeSenko Advanced Components.Kwisidibanisi se-CS, ii-ferrules zihlala ecaleni-ne-cala, zifana ngendlela efanayo kwikhonkco yeLC kodwa encinci ngobukhulu.Kwisidibanisi se-SN, ii-ferrules zipakishwe phezulu nasezantsi.
I-Senko yazisa i-CS ngo-2017. Kwiphepha elimhlophe elibhalwe kunye ne-eOptolink, uSenko uyachaza, "Nangona i-LC duplex connectors ingasetyenziselwa kwiimodyuli ze-transceiver ze-QSFP-DD, i-bandwidth yokudlulisa mhlawumbi inqunyelwe kwi-injini yoyilo enye ye-WDM nokuba isebenzisa 1: 4 mux / demux ukufikelela 200-GbE transmission, okanye 1: 8 mux / demux 400 GbE.Oku kwandisa ixabiso le-transceiver kunye nemfuneko yokupholisa kwi-transceiver.
"Indawo encinci ye-connector footprint ye-CS connectors ivumela ukuba ezimbini zazo zifakwe kwimodyuli ye-QSFP-DD, apho i-LC duplex connectors ayinakuyenza.Oku kuvumela i-injini ye-WDM ye-double design usebenzisa i-1: i-4 mux / i-demux ukufikelela kwi-2 × 100-GbE ukuhanjiswa, okanye ukuhanjiswa kwe-2 × 200-GbE kwi-transceiver eyodwa ye-QSFP-DD.Ukongeza kwii-transceivers ze-QSFP-DD, isinxibelelanisi se-CS sikwahambelana ne-OSFP [i-octal encinci ye-factor pluggable] kunye ne-COBO [Consortium for On Board Optics] iimodyuli.
UDave Aspray, uSenko Advanced Components 'umphathi wokuthengisa waseYurophu, usandul 'ukuthetha malunga nokusetyenziswa kwe-CS kunye ne-SN izixhumi zokufikelela kwizantya eziphakamileyo kwi-400 Gbits / sec.“Sinceda ukucutha unyawo lwamaziko edatha axineneyo ngokucutha iziqhagamshelo zefiber,” utshilo.“Amaziko edatha angoku asebenzisa ikakhulu indibaniselwano yeLC kunye neMPO iziqhagamshelo njengesisombululo esinoxinano oluphezulu.Oku konga indawo eninzi xa kuthelekiswa neziqhagamshelo zeSC eziqhelekileyo kunye neFC.
“Nangona iziqhagamshelo ze-MPO zinokonyusa umthamo ngaphandle kokunyusa unyawo, zingumsebenzi onzima ukuvelisa kwaye kunzima ukuzicoca.Ngoku sinikezela ngoluhlu lweziqhagamshelo ze-ultra-compact ezomeleleyo ngakumbi ebaleni njengoko ziyilwe kusetyenziswa itekhnoloji eqinisekisiweyo, kulula ukuyiphatha kunye nokucoca, kwaye ibonelela ngezibonelelo zokonga indawo.Ngaphandle kwamathandabuzo le yindlela eya phambili.”
I-Senko ichaza umdibaniso we-SN njengesisombululo se-ultra-high-density duplex kunye ne-3.1-mm pitch.Yenza uxhulumaniso lweefiber ze-8 kwi-transceiver ye-QSFP-DD.
"Ii-transceivers ezisekelwe kwi-MPO zanamhlanje ziyintsika ye-topography yeziko ledatha, kodwa uyilo lweziko ledatha lutshintsha ukusuka kwimodeli ye-hierarchical ukuya kwimodeli yeqabunga kunye nomqolo," waqhubeka uAspray."Kwimodeli yegqabi kunye nomqolo, kuyimfuneko ukuqhawula iziteshi zomntu ngamnye ukuze udibanise iiswitshi zomqolo kuzo naziphi na iiswitshi zamagqabi.Ukusebenzisa izihlanganisi ze-MPO, oku kuya kufuna ipatch panel eyahlukileyo enekhasethi okanye iintambo zokuqhawuka.Ngenxa yokuba i-transceivers esekwe kwi-SN sele iqhekezwe ngokuba ne-4 iziqhagamshelo ze-SN kwi-interface ye-transceiver, zinokuthi zifakwe ngokuthe ngqo.
"Utshintsho olwenziwa ngabaqhubi kumaziko abo edatha ngoku lunokubangqina kwixesha elizayo ngokuchasene nokunyuka okungenakuthintelwa kwemfuno, yiyo loo nto ingumbono olungileyo kubaqhubi ukuba bacinge ngokuthumela izisombululo ezinoxinano oluphezulu njenge-CS kunye nezihlanganisi zeSN-nokuba akunyanzelekanga. kuyilo lwabo lwangoku lwedatha. "
UPatrick McLaughlinngumhleli wethu oyintloko.
Ixesha lokuposa: Mar-13-2020
