25G Ethernet vs 40G Ethernet: Yuav xaiv li cas?

Tam sim no, 10G-25G-100G thiab 10G-40G-100G yog ob txoj kev siv los txhawm rau txhim kho lub network kom 100G. Tus yuam sij rau txhim kho lub network yog qhov xa tawm ntawm 25G thiab 40G. Yog li' s sib txawv li cas ntawm ob? Koj puas xaiv 25G Ethernet lossis 40G Ethernet rau kev xaib network?

25G Ethernet VS 40G Ethernet: dab tsi' s qhov sib txawv?

25G Ethernet txuj (IEEE 802.3by) tau tshaj tawm los ntawm IEEE thiab IEEE-SA nyob rau xyoo 2014, uas ua rau muaj cov ntaub ntawv tsawg ntawm 10G Ethernet thiab tus nqi siab ntawm 40G Ethernet. 25G Ethernet txais yuav 25Gb / s ib qho channel lub cev lub cev txheej txheem thev naus laus zis, tuaj yeem paub 100G kis tau raws li plaub txoj haujlwm 25Gbps fiber ntau. Vim tias SFP28 pob tau tsim raws li SFP + pob, thiab lawv qhov ntau thiab tsawg kuj zoo ib yam, 25G SFP28 chaw nres nkoj tuaj yeem sib haum nrog 10G SFP + chaw nres nkoj, tab sis bandwidth ntawm 25G SFP28 optical module yog 2.5 npaug ntawm 10G SFP + optical module. Piv nrog 40G Ethernet, 25G Ethernet muaj cov txiaj ntsig kev ua tau zoo, uas tuaj yeem muab qhov chaw nres nkoj ntau dua thiab qis dua bandwidth. Xyoo tsis ntev los no, 25G cov khoom lag luam (xws li 25G hloov, optical module, DAC, AOC, thiab lwm yam) tau siv dav hauv cov ntaub ntawv huab thiab 5G network.

25G Ethernet ua rau txoj kev mus rau 100G smoother. 25Gbe siv plaub lub ntsej muag hluav taws xob thiab txuas ua ke tooj liab txuas ua ke kom ua tiav 100G Ethernet kis tau tus nqi los ntawm plaub 25Gbit / s channel, uas yog cov nqi sib tw ntau dua thiab kev siv fais fab qis dua.

25G cov phiaj xwm muaj qhov zoo ntawm kev txhim kho kev ua tau zoo ntawm kev suav thiab kev cia khoom, muab bandwidth ntau dua thiab txuas tau zoo dua, thiab tuaj yeem khiav ob 25G raws kom tau 50G, lossis khiav plaub txoj haujlwm kom ua tiav 100G. Thaum hloov mus rau lwm lub network txuas ntxiv, nws cov peev thiab cov haujlwm siv yuav tsum yog sib npaug. Ntxiv mus, 25Gbe yog rov qab tau tshaj thiab tuaj yeem sib txuas lus nrog 10G, yog li nws tseem tuaj yeem ua haujlwm nrog cov khoom siv hauv network uas twb muaj lawm tom qab ntxiv cov neeg rau zaub mov tshiab.

Optical module ntawm 25G Ethernet& amp; kho qhov muag cable

Muaj ob hom ntawm optical module haum rau 25G Ethernet: sfp28 (1 × 25 Gbps) thiab QSFP28 (4 × 25 Gbps).

25Gbase-sr sfp28 optical module yog ib hom ntawm 25G optical module nrog kev ua haujlwm yoj ntawm 850nm. Txawv tawm ntawm lwm cov qauv kho qhov muag, lub transmitter hauv qhov khoos phis tawm optical no yog VCSEL, yog li nws yuav tsum tau siv nrog 50/125 μ m OM3 / OM4 multimode fiber. Qhov kis tau nrug ntawm 25Gbase-sr sfp28 optical module siv nrog OM3 multimode fiber ntau yog 70m, thiab uas siv nrog OM4 multimode fiber yog 100m. Rau qhov kev sib tshuam ntawm kev thov hloov ntawm cov chaw nyob hauv cov chaw khaws ntaub ntawv, siv sfp28 txoj kab hluav taws xob ntau yog qhov kev daws teeb meem ntau tshaj plaws thiab kev siv nyiaj. Ntxiv rau, QSFP28 txog 4xsfp28 kev kub ceev cable yog qhov kev daws teeb meem zoo rau kev sib nrug luv ntawm 100G hloov thiab 25G hloov.

40G Ethernet txuj (IEEE 802.3ba) tawm los ntawm IEEE xyoo 2008. Nws tau tshwm sim ua ntej 25G Ethernet txuj thiab tsuas yog txoj hauv kev tsuas yog siv los paub txog 100G kis thaum lub sijhawm ntawd. 40G QSFP + optical module yog qhov tseem ceeb kom paub txog 40Gbps cov ntaub ntawv xa mus los ntawm plaub 10Gbps fiber ntau txoj kab. Nrog rau qhov kev loj hlob ntawm 40G Ethernet thev naus laus zis thiab nce 40G cov khoom lag luam hauv khw, tus nqi ntawm 40G cov khoom lag luam (xws li 40G hloov, optical module, DAC, AOC, thiab lwm yam) tsawg zuj zus. Txawm li cas los xij, vim nws tus kheej qhov laj thawj, qhov kev loj hlob ntawm 40G Ethernet tsis yog qhov zoo. Piv txwv li, hauv 100G kev txhim kho network, 40G tsis tau them nqi thiab siv lub zog kom siv tau rau hauv Tor (rack top) cov khoom siv hluav taws xob muab los ntawm cov chaw muab huab.

40G Ethernet yog Ethernet txuj tsim los ntawm ieee802.3ba pawg neeg ua haujlwm. Nws txhawb 40G Ethernet thav duab kis mus rau ib thib ob, thiab teeb tsa lub cev txheej txheem tshwj xeeb rau kev sib txuas lus los ntawm cov leeg qaum, txuas tooj liab kab hlau, ntau hom kho qhov muag cable thiab ib hom kho qhov muag cable. Lub hauv paus ntawm 40G Ethernet network txheej yog khub ntawm cov kho qhov muag sib txuas tau los ntawm cov kho qhov muag hluav taws xob (OM3 / OM4). Tus khoos phis tawm tau muab tom qab ntawd tso rau hauv lub network network lossis network interface daim npav, hloov chaw thiab lwm yam khoom siv hauv lub network.

Optical module ntawm 40G Ethernet& amp; kho qhov muag cable

Cov txheej txheem ntim ntim ntawm 40G optical module tau dhau los ntau ntawm kev hloov pauv. CFP optical module yog thawj tiam ntawm 40G optical module. Nws muaj 12 lub teeb xa hluav taws xob xa mus raws thiab 12 lub teeb xa hluav taws xob tau txais cov xaib, thiab qhov sib kis ntawm txhua cov channel yog 10Gbps. Yog li ntawd, nws tuaj yeem muab peb 40G Ethernet chaw nres nkoj lossis ib qho 100G Ethernet chaw nres nkoj hauv tag nrho, txhawb ntau hom optical fiber ntau cable thiab ntawv thov tooj liab. Nrog mus txog 24 transceiver channel, peb tuaj yeem xav tias qhov ntim ntawm CFP optical module yog qhov loj heev. Yog li no, hom kho qhov muag tsis tuaj yeem ua kom tau raws li qhov xav tau ntawm qhov chaw nres nkoj high-density ports. Raws li qhov tshwm sim, cov engineers tsim CXP optical module. Ib yam li CFP optical module, qhov ntsuas hluav taws xob kho qhov muag no kuj muaj 24 lub teeb xa hluav taws xob xa mus thiab tau txais cov channel, thiab txhawb ntau hom kho qhov muag fiber ntau cable thiab ntawv thov tooj liab. Txawm li cas los xij, nws lub ntim ntau me dua li CFP optical module. Tam sim no feem ntau 40G optical module feem ntau ntawm lub lag luam yog QSFP optical module. Nws lub ntim zoo ib yam li CXP optical module, tab sis tsuas muaj plaub kis teeb liab kis tau raws thiab plaub lub teeb liab kis tau txais cov kab, uas tuaj yeem txhawb nqa ib hom kho qhov muag fiber ntau cable, ntau hom kho qhov muag fiber ntau cable thiab ntawv thov tooj liab.

Ob leeg kho qhov muag cable thiab tooj liab cable siv tau hauv 40G Ethernet. Nws yuav tsum raug sau tseg tias txoj kev sib kis deb ntawm kab hluav taws xob cable yog ntev tshaj li ntawm ntawm tooj liab cable. OM3 / OM4 optical cable yog qhov nrov dua cabling daws rau 40G Ethernet cabling hauv cov ntaub ntawv chaw, vim nws yooj ywm dua tooj liab cabling daws thiab qis tus nqi dua li ib hom kho qhov muag fiber ntau cable daws. Ib qho ntxiv, tus txuas txuas txuas hauv 40G Ethernet txuas yog MPO / MTP txuas (tus txuas txuas hauv kab hluav taws xob hauv cov xov hluav taws xob yog duplex LC txuas). Qhov no vim tias 802.3ba txheem stipulates tias multimode optical module yuav tsum tau siv ua ke nrog MPO / MTP txuas kom xa cov ntaub ntawv los ntawm ntau cov kab hluav taws xob sib txuas.

25G VS 40G Ethernet: yuav xaiv li cas?

Raws li cov lus qhia saum toj no, muaj qhov sib txawv ntawm 25G Ethernet thiab 40G Ethernet. Rau 100G network, 25G Ethernet yog qhov yooj yim xa tawm. Nyob rau hauv lub ntsej muag ntawm kev xaib network, peb yuav tsum xaiv 25G Ethernet lossis 40G Ethernet? Peb txoj hauv qab no tuaj yeem txiav txim siab:

1. Daim Ntawv Thov

25G yog siv rau kev nkag mus los ntawm tor hloov mus rau cov neeg rau zaub mov thiab 100G lossis ntau dua kev ceev dua network. 40G feem ntau yog siv rau kev sib txuas ntawm cov hloov hauv cov chaw khaws ntaub ntawv los pab ua txhaum cov khoom tawg ntawm kev sib txuas ntawm cov nkag mus thiab cov keyboards txuas mus. Yog tias 25G tuaj yeem siv dav hauv kev hloov pauv kev sib txuas, nws yuav txhawb txoj kev txhim kho txuas ntxiv ntawm 25G Ethernet. Tib lub sijhawm, nrog qhov tuaj txog ntawm 5G network, qhov kev thov ntawm 5G rau pem hauv ntej kis rau 25G WDM optical module yuav ua 25G Ethernet usher hauv lub ncov tshiab ntawm txoj kev loj hlob. Txog 40G, vim tias nws cov kev ua haujlwm siab dua 10G thiab tus nqi qis dua 100G, nws tseem yog qhov kev xaiv zoo tshaj rau bandwidth siab.

2. Hloov pauv

Hloov hloov chaw thiab qhov chaw nres nkoj ntom ntom yog qhov yuav tsum tau xaiv hauv kev xaiv. Ua ntej tshaj plaws, rau kev sib hloov ntawm kev hloov pauv, qhov hloov pauv ntawm 25G thiab 40G hloov pauv yog nyob ntawm tus xa khoom, thiab qhov sib xyaw 25G Ethernet yog siab dua li ntawm 40G Ethernet. Thib ob, rau qhov chaw nres nkoj ntom nti ntawm qhov hloov chaw, 25G Ethernet txais yuav ib qho channel SerDes cov cuab yeej, uas yog tib yam li 25G Ethernet nrog plaub 10Gbps channel.

3. Thaiv

Rau 10G-25G, 25G SFP28 DAC / AOC tuaj yeem siv ncaj qha rau kev hloov mus rau lub sijhawm luv luv; rau qhov kev sib kis ntev, SFP28 optical module thiab LC jumper feem ntau siv, ntawm cov LC jumper ncaj qha tuaj yeem siv LC jumper siv nyob rau hauv thawj 10G network, zoo txuag cov nqi txuas. Rau 10G-40G, 40G QSFP + DAC / AOC tuaj yeem siv ncaj qha rau kev sib hloov mus nrug luv.

Cov txiaj ntsig zoo ntawm 25G Ethernet dhau 40G Ethernet

1. Ua kom zoo I / O kev ua tau zoo thiab cov peev xim fiber ntau;

2. 2.5 npaug ntawm kev ua tau zoo ntawm 10G Ethernet;

3. Ua kom siab zog chaw nres nkoj, qis zog noj thiab txuag nqi ntau;

4. Lub tshuab hluav taws xob tsawg dua thiab lub zog txuas ntxiv;

5. Nws tau raws 100G Ethernet txuj.

Piv nrog 40G Ethernet, 25G Ethernet zoo li tsim nyog rau huab chaw chaw thiab network teev cov ntaub ntawv chaw nruab nrab nrog cov nqi qis. Qhov no yog vim 25G Ethernet tuaj yeem siv cov khoom sib txuas ntawm 10G thiab 100G Ethernet, uas pab cov ua haujlwm network nthuav lawv cov ntaub ntawv chaw yooj yim dua. Lub network yav tom ntej yog khi rau kev tsim kho hauv cov kev taw qhia ntawm kev kub ceev, kev siv bandwidth thiab ntau qhov siab.

HTF' s optical module khoom lag luam zoo tau lees tias, thiab cov khoom ntxiv siv tau yog txawv.

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