Nyob rau kaum xyoo dhau los, 10g thiab 40g thev naus laus zis tau siv feem ntau ntawm Ethernet kev ua lag luam. Txawm li cas los xij, nrog cov kev thov ntawm cov neeg siv rau kev siv bandwidth siab thiab kev loj hlob ntawm cov ntawv thov tshwj xeeb, 25g / 50g / 100g thev naus laus zis tau nyiam ntau dua thiab ntau dua ntawm cov neeg siv. Lawv maj mam sawv tawm hauv kev xaib network los ntawm muab cov hauv kev zoo rau kev kub ceev. Daim ntawv no yuav tsom rau 25g / 50g / 100g thev naus laus zis thiab kev sib raug zoo ntawm lawv.
25g Tshuab
Qhov zoo tseem ceeb ntawm 25g yog siv SerDes thev naus laus zis, uas yog lub sijhawm siv hluav taws xob ntau lub sijhawm sib faib (TDM), kis-rau-point (P2P) cov kev sib txuas lus thev naus laus zis. Nws tuaj yeem ua kom siv tag nrho cov peev xwm ntawm kev xa xov xwm, xa cov xov tooj sib kis thiab cov pins ntawm lub tshuab ua qhov loj tshaj plaws, thiaj li txhawm rau txhim kho cov teeb liab sib kis thiab zoo heev txo tus nqi sib txuas lus.
Tam sim no, feem ntau cov khoom siv hauv cov hloov hluav taws xob tau khiav SerDes nrog lub moos ntawm tus kwv yees li 10GHz, uas tuaj yeem muab 10Gbps kis tus nqi ntawm cov sib txawv. Xyoo tsis ntev los no, vim yog kev txhim kho sai ntawm SerDes thev naus laus zis, moos ntawm 25ghz SerDes tau dhau los ua ib qho kev xaiv ntawm kev lag luam, uas ua rau tus nqi thiab cov txiaj ntsig sib txawv ntawm 10g txog 40g thiab 25g. Piv txwv li:
10g vs 25g - kuj yog SerDes channel, qhov chaw muab tau los ntawm 25g yog 2.5 npaug siab dua li uas muab los ntawm 10g. Thaum lub 10G network tau nce mus rau 25g, 25g sfp28 optical module tuaj yeem siv lub LC jumper siv nyob rau hauv cov xov hluav taws xob ntawm 10G network tsis muaj qhov hloov pauv, yog li tus nqi yuav txuag tau zoo.
40g vs 25g - 40g adopts plaub 10Gbps fiber ntau kab (SerDes nrog moos ntawm 12.5ghz), thaum 25g adopts SerDes ib qho channel, yog li 25g tuaj yeem muab qhov chaw nres nkoj ntau dua. Nyob rau tib lub sijhawm, raws li feem ntau 40g qsfp + optical module ntawm kev ua lag luam yuav tsum tau siv nrog MTP / MPO cov neeg dhia, 10g-40g yuav zam tus nqi nce nqi cable.
50g Tshuab
Nrog kev loj hlob ntawm 25g thev naus laus zis thiab cov neeg siv' yuav tsum muaj kev kub ceev, kev lag luam muaj kev cia siab rau 50g. Xyoo 2018, IEEE tau pib tshaj 50g Ethernet tus qauv nrog tib lub tsev zoo ib yam li 400g / 200g Ethernet txuj. Tus txheej txheem txais yuav siv tshuab pam4, uas tuaj yeem txhim kho bandwidth siv ntau dua thiab dhau los ua qhov kev daws teeb meem txuas ntxiv rau kev kub ceev txuas ntawm cov servers thiab cov chaw zov me nyuam. Vim tias 50g tuaj yeem rov qab siv 25g cov khoom sib txuas hauv 100g network uas twb muaj lawm, nws tuaj yeem txo tus nqi. Tib lub sijhawm, tus nqi 50g yog ib nrab ntawm 40g, tab sis nws qhov kev ua tau zoo yog nce 25%.
Txij li thaum pam4 thev naus laus zis maps khub ntawm cov khoom me me rau hauv ib lub cim, tag nrho tus nqi baud ntawm txhua 50gbit / s channel yog 26.5625 gbaud. 50gbaud pam4 tuaj yeem muab 100g sib kis tau los ntawm 1 * 2 * 50 gbaud architecture (tsuas yog ib lub laser xav tau), uas txhais tau hais tias qhov kis tau tus mob tuaj yeem nce ntawm 10Gbps txog 100gbps nrog ib lub laser, uas yog kaum qhov nce ntxiv. Piv nrog rau kev siv NRZ thaum ntxov, technology pam4 tuaj yeem muab cov khoom xa hluav taws xob ntau dua ntawm tus nqi qis, yog li nws tau siv dav hauv qhov kev sib txuas lus high-speed.
100g Tshuab
100g Ethernet tau tso tawm xyoo 2010. Txhawm rau kom ua tau raws li qhov yuav tsum tau muaj kev kub ceev, kev deb thiab qee qhov tshwj xeeb, tus qauv tau hloov pauv dav. Vim tias kev txhim kho txuas ntxiv mus ntawm cov qauv, kev sib koom ua ke ntawm cov kev daws teeb meem, kev tsim cov txheej txheem kev lag luam thiab qhov xa tau ntau dua thiab kev sib kis tau ntev dua (siv DWDM Technology), 100g maj mam hloov 40g.
PMD | 40G | 100G |
Multimode fiber Tsawg dua 100m (OM3) | 40GBASE-SR4 | 100GBASE-SR10 |
Ib hom fiber ntau Ntau tshaj 10 km | 40GBASE-LR4 | 10GBASE-LR4 |
Ib hom fiber ntau Ntau tshaj 40 km | 100GBASE-ER4 | |
Ib hom fiber ntau Tsis muaj qhov tshwj xeeb | Tsis muaj qhov tshwj xeeb |
Nws yog qhov tshwj xeeb tshaj yog tsim rau kev sib txuas high-speed ntawm ib qho wavelength DWDM. Ntawm lawv, qhov coherent CFP DWDM optical module yog qhov tshwj xeeb tshaj yog haum rau 100g txiv neej lossis cov ntaub ntawv nruab nrab sib txuas (DCI) txog 80km lossis ultra txuas txuas nrog kis nrug deb dua 1000km. Ntxiv rau, nyob rau hauv rooj plaub ntawm ntau tus nqi thiab ntau tus txheej txheem network (xws li 10g / 40g / 100g Ethernet raws tu qauv thiab tus nqi), kev siv 100g DWDM multiplexer tuaj yeem zam tau txoj kev rov ua dua tshiab thiab kev npaj ntawm lub network architecture. Nws tuaj yeem ncaj qha ua ke cov teeb liab ntawm cov kev cai sib txawv thiab cov nqi sib txawv mus rau ib qho yoj ntev txog 100g rau kev sib kis, muab cov tshuaj hloov kho thiab txo nqi.
Dab tsi yog qhov sib ze ntawm 25g / 50g / 100g?
Tam sim no 25g / 50g / 100g yog siv dav hauv cov ntaub ntawv huab, thiab yog tias peb qhov ua ke, 10g-25g-50g-100g network txhim kho tau tuaj yeem pom. Ua ntej qhov tshwm sim ntawm 25g thiab 50g, 100g network txhim kho tau pom tau los ntawm 10g-40g-100g, tab sis cov qauv no tsis tshua muaj kev ua haujlwm thiab kim. Hauv kev sib piv, 25g yog qhov kev daws teeb meem zoo tshaj plaws kom nce mus rau 100g. Yog tias 25g siv rau 100g network txhim kho, nws tuaj yeem siv los ntawm 4 * 25g lossis 2 * 50g SerDes channel nrog ridge nplooj architecture. Nyob rau hauv txoj kev no, 25g tuaj yeem hloov kho tshiab raws li cov kab hluav taws xob uas twb muaj lawm nrog nws cov khoom siv tau yooj yim, muab cov khoom xa hluav taws xob ntau dua thiab ua tau zoo dua thaum txuag CAPEX thiab OPEX. Hauv ib lo lus, 25g-50g-100g network txhim kho txoj hauv kev tuaj yeem txo tus nqi bandwidth nqi los ntawm kev siv tag nrho cov hloov chaw nres nkoj ua haujlwm, thiab teeb lub hauv paus rau 200g thiab 400g network txhim kho.
HTF' s optical module khoom lag luam zoo tau lees tias, thiab cov khoom ntxiv siv tau yog txawv.
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