25gbase-t yog dab tsi?
Xyoo tsis ntev los no, 25gbase-t (uas yog, 25g twisted khub Ethernet) thev naus laus zis tau dhau los ua cov thev naus laus zis hauv huab xam cov ntaub ntawv chaw vim nws lub chaw nres nkoj siab, kev siv hluav taws xob tsawg thiab kev siv network sib tw. 25gbase-t tuaj yeem ua tiav 25gbps kev xa ntawm ib qho xov xwm, thiab tuaj yeem txhawb nqa kev ua tau zoo bandwidth Ethernet ntau dua. Nws yog haum rau cov ntaub ntawv chaw thiab chav tsev neeg rau zaub mov. Kab lus no yuav muab cov lus qhia ntxaws ntxaws rau 25gbase-t.
25g Ethernet txais yuav 25gb / s ib qho channel lub cev txheej txheem thev naus laus zis, tuaj yeem paub 100g kis tau tus mob raws li plaub 25gbps fiber ntau hauv. Vim tias sfp28 pob yog tsim raws 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. Nyob rau hauv xyoo tas los, 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 yog tsuas yog siv rau kev nkag mus ntawm tor hloov thiab server (lub server nkag mus rau lwm cov ntaub ntawv chaw), thiab 100g lossis siab dua tus nqi network nce. 40g feem ntau yog siv rau kev sib txuas ntawm cov keyboards hauv cov ntaub ntawv chaw txhawm rau pab ua txhaum kev cuam tshuam ntawm kev sib txuas ntawm cov nkag mus thiab cov keyboards xa mus. Yog tias 25g tuaj yeem siv dav hauv kev hloov pauv kev sib txuas, nws yuav txhawb ntxiv txoj kev txhim kho ntawm 25g Ethernet. Tib lub sijhawm, nrog qhov tuaj txog ntawm 5g network, qhov kev thov ntawm 5g rau xa mus rau 25g WDM optical module yuav ua 25g Ethernet usher hauv lub ncov tshiab ntawm kev loj hlob. Rau 40g, vim tias nws cov hauj lwm zoo yog siab dua 10g thiab tus nqi qis dua 100g, nws tseem yog qhov kev xaiv zoo tshaj rau bandwidth siab.
25gbase-t tus qauv thiab thev naus laus zis
25gbase-t txheem tau tsim los ntawm IEEE xyoo 2016. Nws tuaj yeem paub 25gbps cov ntaub ntawv xa mus los ntawm kev sib tw ntawm tus khub.
Npe | Txuj Ci | Xa xov xwm | Tus naj npawb ntawm xov xwm | Gigabaud ib channel | Qhov chaw xa hluav taws xob ntau | RS-FEC (802.3by CL 108) |
25GBASE-T | 802.3bq (CL 113) | Cat8 Tooj liab twisted khub | 4 khub | 2.000 | m30 | Neeg tsis txhawb nqa |
25gbase-t thev tshuab ua raws 10Base-T thev naus laus zis thiab tuaj yeem siv tau nrog 10gbase-t. tom qab kev txhim kho tas mus li, nws tuaj yeem siv nrog 40gbase-t. Qhov ntsuas qhov ntsuas sib piv ntawm 10G / 25g / 40gbase-t thev naus laus zis yog muaj nyob hauv qab cov lus hauv qab no. Los ntawm kev sib piv, nws pom tau tias qhov nyuaj ntawm 25gbase-t tshuab zoo ib yam li 10GBASE-T thev naus laus zis. Lub caij no, 25gbase-t ua raws li 40gbase-t thev naus laus zis tau tsim ua ntej, uas yuav txo tau qhov nyuaj ntawm 25gbase-t cov khoom siv thiab ua kom lub sijhawm luv luv rau kev ua lag luam. Ntxiv rau, 25gbase-t siv SerDes thev naus laus zis, thiab Gigabit kev sib txuas ntawm cov khoom sib txuas interface thiab sfp28 raws tu qauv kuj tseem siv dua los ntawm 25gbase-t.
Tsis | 10GBAES-T | 40GBASE-T | 25GBASE-T |
Passageway | 100m, CL 55.7 | 30m, CL98 7d1.0 | 30m, CL98 7d1.0 |
Tus nqi Baud (MHz) | 800 | 3200 | 2000 |
Tau txais cov khoom tseem ceeb | 9.5-10 | 7.8 | 6.5-7.5 |
Channel IL (DB) | 46.9 | 29.4 | 22.6 |
Channel ncig ua ke (baud) | 880 | 1056 | 660 |
Echo tshem tawm (DB) | 55 | 47 (-6dB) ~ 55 | 43 (-12dB) ~ 55 |
Tom ntej kev tshem tawm (DB) | 40 | 34 (-6dB) ~ 40 | 28 (-12dB) ~ 40 |
Cov ntsiab lus tshem tawm (DB) | 25 | 22 (-3dB) ~ 25 | 19 (-6dB) ~ 25 |
Tus kwv tij SNR npoo (DB) | 0 | 2.7dB ~ 0.2 dB | +8.7 Db ~ +4 dB |
Dab tsi yog qhov zoo ntawm 25gbase-t?
Vim li cas 25gbase-t thiaj li nrov nyob rau hauv ib lub sijhawm luv luv? Cov laj thawj tseem ceeb muaj raws li hauv qab no:
Zoo heev tawm / tawm tswv yim muaj peev xwm thiab qauv muaj peev xwm
25gbase-t tuaj yeem them nqi kom zoo tsim cov peev txheej bandwidth, thiab tuaj yeem ua tau raws li qhov yuav tsum tau ua tiav ntawm cov chaw khaws ntaub ntawv huab thiab cov cim txuas ntxiv ntawm cov ntaub ntawv chaw pabcuam thiab chaw khaws khoom. 25gbase-t tuaj yeem ua tiav 25gbps kis nrog ib tus xaib. Piv nrog 10GBASE-T, nws txhim kho lub vev xaib bandwidth ua tiav los ntawm 2.5 zaug. Nyob rau tib lub sijhawm, 25gbase-t tuaj yeem muab 4 lub sijhawm ntawm chaw nres nkoj kom ceev rau txhua tus nti hloov. Piv nrog 40gbase-t, 25gbase-t muaj qhov chaw nres nkoj ntau dua thiab muaj peev txheej zoo dua.
Siv tsis siv neeg kev sib tham thiab siab sib xws
Raws li 25gbase-t tus qauv, qhov chaw nres nkoj ntawm lub pob tuaj yeem tuaj yeem paub tus nqi sib kis thiab tsim cov kev sib txuas ntawm tib tus nqi. Los ntawm kev lag luam tus qauv sib cuam tshuam kev lag luam, lub network txhim kho tau yooj yim heev thiab kev sib txuas tus nqi tau zoo. Tam sim no, cov khoom siv sib txuam tshwj xeeb cov ntsiab lus yog 10GBASE-T, 40gbase-t, 50gbase-t thiab 100gbase-t. 25gbase-t tsis tuaj yeem tsuas yog thim rov qab tau nrog 10GBASE-T, tab sis kuj muab rau pem hauv ntej muaj peev xwm (xws li 100g Ethernet) los ntawm kev sib tham tsis siv neeg, uas tsis tshua ntseeg txhim kho qhov kev sib txuas thiab txuag tau tus nqi.
Sab saum toj yooj yim
Nws tuaj yeem pom los ntawm cov saum toj no uas 25gbase-t tuaj yeem paub txog 30 meter cov ntaub ntawv xa mus nrog cat8 network jumper. Piv nrog 25G DAC kev kub ceev cable, 25gbase-t muaj qhov kev sib kis ntev, yog li 25gbase-t tuaj yeem txhawb ntau cov topology cabling, xws li cov khoom sib txuas ntawm cov tub lossis los ntawm EOR hloov thiab lub server, MOR cabling, thiab lwm yam. Vim li no, 25gbase-t tau saib xyuas los ntawm cov huab loj loj ntawm cov ntaub ntawv chaw nyob yog qhov kev daws teeb meem zoo los tswj cov keyboards hauv ntau pua lub txee.
Daim ntawv thov ntawm 25gbase-t
Raws li tau hais los saum toj no, daim ntawv thov ntawm 25gbase-t zoo ib yam li 40gbase-t. Nws qhov txiaj ntsig loj tshaj plaws yog tias cat8 network jumper tuaj yeem siv kom paub cov kis mus txog 30m, uas ua kom tiav cov kis ntawm luv luv kis, tshwj xeeb tshaj yog tsim rau mor thiab EOR xaim. Yog li no, 25gbase-t yog siv dav hauv kev sib txuas ntawm tus tes hloov qhov txuas thiab tus neeg rau zaub mov hauv huab chaw.
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