Txawm hais tias ntau lub tuam txhab domestic thiab txawv teb chaws tau lees tias tau tsim 400G khoom, puas yog qhov tshwm sim loj no txhais tau tias qhov tuaj txog ntawm 400G era? Qhov tseeb, 400G thev naus laus zis tsis tau paub tab. Raws li kev sib tham sab nraud ntawm cov neeg rau zaub mov, kev txhim kho ntawm optical module tus nqi yog system engineering, thiab 400G optical module tseem ntsib ntau yam kev cov nyom.
Kev sib tw 1:
Nws yuav siv qee lub sijhawm rau tus neeg rau zaub mov ua cov ntaub ntawv bandwidth los txhim kho
Hais txog qhov xav tau, daim ntawv thov ntawm 400G optical module tau tsav los ntawm kev nce ntawm cov neeg rau zaub mov ua cov ntaub ntawv ua bandwidth.
Tsuas yog thaum cov neeg rau zaub mov ua ntaub ntawv ua cov bandwidth nce mus txog 100G tuaj yeem sib cuam tshuam ntawm kev hloov mus rau 400G (4 * 100G), thaum lub PCIe 4.0 tus qauv ntawm 100G neeg rau zaub mov ua cov ntaub ntawv bandwidth tau khov thaum kawg ntawm 2017, thiab 400G kev lag luam nplai tseem ntau dua a xyoo deb.
Kev sib tw 2:
Nws yuav siv qee lub sijhawm los hloov kho cov hloov hluav taws xob thiab tshuab hluav taws xob interface
Nyob rau hauv cov nqe lus ntawm kev siv tshuab, kev sib txuas ntawm 400G optical module yuav tsum tsis tsuas yog cov kev hloov kho ntawm kev sib txuas lus kho tshuab, tab sis kuj sib piv hloov ntawm cov hloov nti thiab hluav taws xob interface technology.
Ntawm ib sab tes, hloov chips ua feem ntau siv Broadcom chips, los ntawm cov qauv ntawm Broadcom chips ntawm txhua tiam mus rau kev thauj khoom ntawm cov coj tus nqi kho qhov muag cov qauv, qhov luv sib txawv yog li 2 xyoos, lub sijhawm ntawd nws siv rau debugging hloov chips thiab optical khoom siv Cov. Ntawm qhov tod tes, 400G optical module yuav tsum tau siv PAM4 qhov kev hloov kho kom nce ib qho-channel feem rau 56G ntawm lub kho qhov muag, thiab cov hluav taws xob sib txuas kuj xav tau kev pab txhawb rau ib-channel 56G. Thaum kho kom nce siab dua rau tus nqi siab dua, qhov hluav taws xob teeb liab interface yuav tsum tau kho tshiab kom haum. Feem ntau, qhov sib txuas ntawm lub tshuab hluav taws xob high-speed interface siv cov tshuab SerDes (cov hluav taws xob tsis sib xws) thiab ua raws li CEI (hluav taws xob hluav taws xob interface) cov qauv. Tam sim no, CEI 4.0, uas ua kom txog li 58 GB / s kev sib txuas, yuav tso tawm thaum kawg ntawm 2017, thiab nws yuav qee lub sijhawm ua ntej SerDes chips tau npaj rau kev siv lag luam.
Txoj Kev Sib Tw 3:
Nws yuav siv qee lub sijhawm los kov yeej cov kev cov nyom ntawm cov pob sib txawv
Hais txog cov qauv kev ntim khoom, tam sim no 400G optical modules feem ntau suav nrog CFP8, OSFP, QSFP-DD, COBO, thiab lwm yam, ntawm cov uas QSFP-DD thiab OSFP cia siab los ua cov khoom ntim tseem ceeb. Tam sim no, txawm hais tias qee tus neeg xa khoom tau tshaj tawm txog 400G optical module kuaj, tab sis cov pob khoom sib txawv ntawm 400G optical module tau ntsib ntau yam kev sib tw, xws li QSFP-DD laser vim tsis muaj cua sov tsis zoo los yog tsis ua hauj lwm lig, OSFP tsis tuaj yeem rov qab tau zoo thiab lwm yam.
