Nrog kev qhia txog 400G optical module, kev sib tshuam ntawm cov chaw zov me nyuam cov ntaub ntawv kuj tseem maj mam tsim tawm ntawm 800G Ethernet. Tsis ntev los no OFC 2020 lub rooj sib tham hauv San Diego tsom mus rau 800G Ethernet, 800G thev naus laus zis thiab cov fiber ntau dhia rau 800G tes hauj lwm, ua 800G Ethernet lwm qhov chaw kub kub tom qab 400G tes hauj lwm. Txawm li cas los xij, 800G Ethernet tseem tab tom sim thiab ua kom zoo tshaj plaws, thiab nws cov kev ua haujlwm loj-tseem muaj kev ua haujlwm ntev.
800G Ethernet thiab Optical module txuj
Piv nrog 200G thiab 400G Ethernet, 800G Ethernet yog hom tshiab. Tam sim no, ntau pawg neeg ua haujlwm tau thov tawm tswv yim txog 800G Ethernet. Cov lus qhia tshwj xeeb no yuav piav qhia txhua yam hauv qab no.
1. 800GBase-R yuav hloov mus rau 400G Ethernet thev naus laus zis rau kev txuag nyiaj ntau tshaj plaws
Tam sim no, IEEE (Lub Koom Haum Hluav Taws Xob thiab Hluav Taws Xob Cov Hluav Taws Xob) tsis muaj tus qauv rau 800G Ethernet, tab sis 25G Ethernet Alliance (tam sim no hu ua Ethernet Technology Alliance (ETC)) tau tsim kev cai 800GBase-R rau 800G Ethernet thaum Lub Plaub Hlis 2020 . ETC tshaj tawm tias qhov tshwj xeeb siv 400GbE tus qauv los tsim 800GbE MAC (xov xwm nkag tswj) thiab PCS (lub cev coding sub txheej) cov ntsiab lus ntau li ntau tau, thiab txo tus nqi uas cov neeg siv tuaj yeem ua tiav ntau tus nqi ntawm Ethernet ports. 800GBase-R cov ntsiab lus tseem siv US 106 cov chaw uas twb muaj lawm 106.25g nyob rau hauv 400G Ethernet, nrog rau lub hom phiaj ua kom ob npaug ntawm tag nrho cov kuav tau muaj rau PCS (uas yog, ntawm plaub mus rau yim). Ntawm lub ntsej muag ntawm nws, nws zoo li yooj yim kev hloov pauv lub tswv yim, tab sis khi txoj kev tshiab ua ke hauv txoj hauv kev no yuav tsum muaj neeg, khoom siv thiab nyiaj txiag ntau.
2. 800G Lub Koom Haum Pab Koom Tes nrog MSA txhais tau meej rau daim ntawv thov daim ntawv thov ntawm 800G-SR8 thiab FR4 lub teeb
800Gbase-R tshwj xeeb txhais tau lub hauv paus txheej ntawm 800G network, uas xav tias yuav ua ob zaug ntxiv kom tau raws li cov ntaub ntawv nruab nrab. Ntxiv nrog rau txheej txheej hauv lub network, 800G Pluggable MSA pab neeg tau tshaj tawm 800Gbps Ethernet kis tshwj xeeb rau cov ntaub ntawv nruab nrab cov ntaub ntawv thov raws Pam-4 kev hloov kho thev naus laus zis hauv lub Cuaj Hli 2019.
● 800G SR8: Tus nqi tsim nyog 8 × 100G module haum rau cov ntawv xa xov luv luv, thiab tuaj yeem xa mus rau 60-100 metres ntawm cov tib hom fiber ntau.
● 800G FR4: 4x200G optical module, uas yuav tsum tau pab txhawb FEC haujlwm tshiab.
Ntxiv rau, nws yog qhov ua tau los siv pluggable teeb pom kev zoo li QSFP112-DD thiab OSFP32 pob hom, thiab nws ntseeg tau tias pluggable teeb lub teeb tseem yog qhov kev xaiv zoo tshaj plaws rau 800G cov ntaub ntawv chaw thiab cov neeg teb xov tooj.
3. QSFP-DD800 MSA pab pawg ua haujlwm tsim kho qhov teeb meem kho vajtse rau 800G optical module
Lub OPTICAL module MSA ua haujlwm pab pawg, muaj Cisco, Broadcom, Juniper, Intel, thiab lwm yam, tseem ntseeg tias pluggable optical modules yog qhov kev xaiv zoo tshaj plaws rau cov ntaub ntawv nruab nrab sib txuas. Pab pawg neeg ua haujlwm nyuam qhuav tsim thawj 800G QDFP dual-density pluggable lub teeb module qauv, txiav txim siab qhov loj ntawm 800G lub teeb module, QFPP-DD800. Nws tau tshaj tawm tias qhov qauv kho qhov muag no tuaj yeem txhawb 8 txoj kev kub ceev, txhua channel' s tus nqi yog 100G / s, thiab tuaj yeem sib haum nrog OPTICAL modules xws li QSFP-DD, QSFP +, QSFP28, QSFP56, thiab lwm yam muab qhov yooj yim zoo thiab qhov zoo rau cov koom tes ua haujlwm hauv 800G Ethernet xa tawm.
Cov xwm txheej txhim kho ntawm 800G lub teeb ci thiab tshuab thev naus laus zis
Txawm hais tias cov ntsiab lus tshwj xeeb rau 800G Ethernet thiab cov khoos phis tawm kho qhov muag tau tsim, lawv yuav yuav tsum tau hloov kho lossis kho kom zoo dua yav tom ntej raws li cov ntawv thov siv tiag (qhov xwm txheej no yuav tsis cuam tshuam rau qhov kev loj hlob ntawm qhov kho qhov muag ntawm cov khoos phis tawm hauv cov chaw sib txuas lus). Lwm qhov muaj txiaj ntsig zoo ua rau kev hloov pauv bandwidth yog qhov tshwm sim ntawm ntau ntawm cov xov hluav taws xob uas tsis muaj nqi. Thaum lub network ceev nce mus txog 800Gbps, lub pluggable optical devices yuav muaj teeb meem xws li tsis txaus thiab muaj hwj chim dhau. Thaum qhov no tshwm sim, thev naus laus zis xws li co-encapsulated kho qhov muag ntsiab (CPO) kuj yuav xav tau los daws cov teeb meem zoo li no.
Tab sis tam sim no, lub network xav tau kev txhim kho mus rau qhov siab nrawm dua thiab tuav qhov ua tau zoo dua, uas yog tsis muaj kev ntseeg tsis yog kev sib tw zoo rau cov khoom siv kho qhov muag. Nyob rau tib lub sijhawm, vim cov qauv ua haujlwm nyuaj, 800G pluggable lub teeb module yuav tsis sai sai tsim thiab muab tso rau hauv kev siv" cov neeg siv khoom sab" ;. Pab pawg 800G Pluggable MSA tau tshaj tawm tias lawv tau ua 800G lub teeb module coj mus kuaj, thiab thawj cov teeb tsa cov qauv hluav taws xob tau cia siab tias yuav ua tiav nyob rau xyoo 2021. Inphi tsis ntev los no tshaj tawm tias nws yog piv txwv ntawm Spica 800G 7nm PAM4 DSP tshiab, uas nws tau thov yog qhov kev lag luam' s thawj 800Gbit / s (lossis 8x100Gbit / s) PAM4 DSP, ua rau 800G optical modules txhawb nqa qFP-DD800 lossis OSFP pob qhov ntau thiab tsawg.
Txawm li cas los xij, rau" kab sab" ntawm 800 g, 800 g kho qhov muag rau lub hom nto moo tsis yog lub tuam txhab network tshiab, thiab nws txoj haujlwm tseem ceeb yog" daim npav" (cov teeb meem hluav taws xob hluav taws xob Circuit Court, cov muag khoom sib txuas lus muag khoom tuaj yeem tsim kho lawv tus kheej hauv online daim npav network daws teeb meem, thiab lwm cov tuam ntxhab ntawm daim npav tsis muaj kev cuam tshuam thiab cuam tshuam) ntawm kev siv.
Ntev ntev npaum li cas txog 800G lub teeb hluav taws xob tuaj txog?
Txoj kev loj hlob tsis tu ncua ntawm huab xam thiab cov ntaub ntawv chaw tsheb thiab bandwidth tsis yog tsuas nqa cov kev xav tau loj ntawm 800G optical module, tab sis kuj tso rau pem hauv ntej siab dua rau qhov hloov qhov muaj peev xwm ntawm cov hloov thiab routers. Nrog 400GbE tiam tsim los npaj rau hauv kev ua lag luam, 800G pluggable module tau npaj tiav. Lub ecosystem tshiab no yuav siv los muab qhov muaj zog ntau dua thiab raug tus nqi them siab rau ib leeg-channel 100G thiab ib-tshooj 200G sib txuas rau lwm tiam 25.6T thiab 51.2T hloov.
