Tam sim no, cov IO modules ntawm SFP28/SFP56 thiab QSFP28/QSFP56 feem ntau yog siv los txuas cov keyboards thiab cov keyboards thiab cov servers hauv cov txee tseem ceeb hauv kev ua lag luam. Hauv lub hnub nyoog ntawm 56Gbps tus nqi, txhawm rau kom ua tiav qhov chaw nres nkoj siab dua, tib neeg tau tsim kho QSFP-DD IO module kom ua tiav 400G chaw nres nkoj muaj peev xwm. Nrog rau ob npaug ntawm tus nqi teeb liab, qhov chaw nres nkoj muaj peev xwm ntawm QSFP DD module tau ob npaug rau 800G, uas hu ua OSFP112. Nws tau ntim nrog yim txoj kev ceev ceev, thiab tus nqi xa ntawm ib txoj kev tuaj yeem ncav cuag 112G PAM4. Tag nrho tus nqi xa ntawm tag nrho pob yog txog li 800G. Rov qab sib xws NROG OSFP56, piv nrog tib lub sijhawm kom ob npaug qhov ceev, ua tau raws li IEEE 802.3CK tus qauv koom tes; Yog li ntawd, kev poob txuas yuav nce ntxiv thiab qhov deb ntawm kev xa ntawm passive tooj liab CABLE IO module yuav luv dua. Raws li qhov kev txwv ntawm lub cev tiag tiag, pab pawg IEEE 802.3CK, uas tau tsim cov lus qhia 112G, tau txo qhov ntev tshaj plaws ntawm cov xov tooj liab txuas mus rau 2 meters ntawm lub hauv paus ntawm 56G xov tooj liab IO nrog qhov ceev tshaj plaws ntawm 3 meters.
QSFP-DD X 2 chaw nres nkoj 1.6Tbps lub rooj tsavxwm kuaj
QQSFP -DD 800G tawm tsam cua
Cov peev xwm ntawm cov chaw khaws ntaub ntawv yog txiav txim siab los ntawm cov servers, switches, thiab cov yam ntxwv sib txuas uas sib npaug thiab thawb ib leeg mus rau kev loj hlob sai dua thiab pheej yig dua. Kev siv tshuab hloov pauv tau yog lub zog tseem ceeb rau ntau xyoo. Raws li OFC2021 xaus rau lub sijhawm tsis ntev los no, cov chaw tsim khoom sib txuas lus optical xws li Intel, Finisar, Xechuang, Opticexpress thiab New Yisheng tau tso tawm 800G series optical modules. Tib lub sijhawm, cov tuam txhab optical chip txawv teb chaws tau qhia cov khoom lag luam chip siab rau 800G, thiab cov phiaj xwm ib txwm muaj tseem yuav muaj qhov chaw hauv 800G era. Peb xav tias 800G optical module technology txoj kev yog qhov meej dua, 800GDR8 thiab 2 * FR4 muaj peev xwm tseem ceeb tshaj plaws; Raws li OFC2021 mainstream optical module thiab optical chip tuam txhab tau tsim cov khoom tshiab ib qho tom qab ib qho, lub sijhawm node thiab mainstream technology txoj kev ntawm 800G upgrade tau txhais. Tus nqi ntawm kev lag luam optical module chaw khaws ntaub ntawv txuas ntxiv mus, thiab tus cwj pwm loj hlob mus sij hawm ntev tau txiav txim siab. Peb ntseeg tias nyob rau hauv lub caij nyoog ntawm digitalization thiab kev txawj ntse, qhov kev tawg tas mus li ntawm cov ntaub ntawv chaw khiav tsheb tau coj qhov kev thov rau kev rov ua dua ntawm cov khoom siv optical. Txoj kev siv tshuab meej ntawm 800G qhia tau tias 400G yuav loj heev.
Thaum tus nqi teeb liab 25Gbps raug hloov kho mus rau tus nqi teeb liab 56Gbps tam sim no, vim yog kev qhia txog PAM4 (Pulse Amplitude Modulation) lub teeb liab system (IEEE 802.3BS pawg), Lub ntsiab lus zaus ntawm lub teeb liab xa mus rau Serdes Ethernet txuas tsuas yog txav mus los ntawm 12.89ghz mus rau 13.28ghz, thiab lub ntsiab lus zaus teeb liab tsis hloov pauv ntau. Cov kab ke uas tuaj yeem txhawb nqa kev xa xov zoo ntawm 25Gbps teeb liab tuaj yeem hloov kho mus rau 56Gbps teeb liab nqi nrog kev ua kom zoo me ntsis. Kev hloov kho los ntawm 56Gbps teeb liab nqi mus rau 112Gbps teeb liab nqi tsis yooj yim heev. Lub teeb liab PAM4 system qhia thaum tus qauv nqi 56Gbps tau tsim yuav feem ntau rov siv dua ntawm 112Gbps nqi. Qhov no hloov qhov tseem ceeb zaus ntawm 112Gbps Ethernet teeb liab mus rau 26.56ghz, uas yog ob npaug ntawm 56Gbps teeb liab nqi. Hauv tiam ntawm 112Gbps nqi, cov kev xav tau ntawm cov thev naus laus zis cable yuav ntsib kev sim ntau dua. Tam sim no, 400Gbps high-speed cable txuas nrog cov khoom. Cov hom lag luam thaum ntxov yog cov hom lag luam txawv teb chaws, xws li TE, LEONI, MOLEX, Amphenol, thiab lwm yam. Cov hom lag luam hauv tsev kuj tau pib dhau los hauv xyoo tas los no. Los ntawm cov txheej txheem tsim khoom, cov khoom siv thiab cov ntaub ntawv, peb tau ua ntau yam kev tsim kho tshiab. Tam sim no, muaj cov tuam txhab lag luam hauv tsev uas tsim 800G tooj liab cable, tab sis peb tsis tau sau ntau. Shenzhen Hongteda, Dongguan Zhongyou Electronics, Dongguan Jinxinuo, Shenzhen Simic Communication, thiab lwm yam, tab sis qhov teeb meem kev siv tshuab uas twb muaj lawm feem ntau yog nyob rau hauv qhov hlau liab qab. Tam sim no, nws nyuaj heev rau daws cov kev ua haujlwm hluav taws xob zaus siab thiab qhov xav tau ntawm cov xov hlau tib lub sijhawm. DAC tooj liab cable yuav ntsib lub sijhawm ntawm kev txhim kho sai. Tsuas muaj ob peb lub tuam txhab tsim hlau hauv zos xwb.
Lub lag luam hloov pauv sai, thiab nws yuav hloov pauv sai dua yav tom ntej. Cov xov xwm zoo yog tias muaj kev vam meej tseem ceeb thiab muaj kev cia siab, los ntawm cov koom haum qauv mus rau kev lag luam, kom cov chaw khaws ntaub ntawv hloov mus rau 400GB thiab 800GB. Tab sis kev tshem tawm cov teeb meem thev naus laus zis tsuas yog ib nrab ntawm qhov kev sib tw. Ib nrab ntxiv yog lub sijhawm. Thaum muaj kev txiav txim siab tsis raug, tus nqi yuav siab dua. Lub hauv paus ntawm lub chaw khaws ntaub ntawv hauv tsev uas twb muaj lawm yog 100G. Ntawm cov chaw khaws ntaub ntawv 100G uas tau xa tawm, 25% yog tooj liab, 50% yog ntau hom fiber, thiab 25% yog ib hom fiber. Cov lej ib ntus no tsis yog qhov tseeb, tab sis qhov kev thov nce ntxiv rau bandwidth, peev xwm, thiab latency qis dua yog tsav tsheb tsiv mus rau qhov ceev ntawm network. Yog li txhua xyoo, kev hloov pauv tau thiab kev ua tau zoo ntawm cov chaw khaws ntaub ntawv huab loj yog qhov kev sim. Tam sim no, 100GB tab tom ntws dej hauv kev lag luam, nrog rau 400GB xav tias yuav muaj rau xyoo tom ntej. Txawm li ntawd los, cov ntaub ntawv ntws tseem txuas ntxiv mus ntxiv, qhov kev nyuaj siab rau cov chaw khaws ntaub ntawv yuav txuas ntxiv mus ntxiv, tom qab 400G, QSFP-DD 800G tau los.
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Lub sijhawm tshaj tawm: Lub Yim Hli-16-2022
