Thaum koj siv cov transceiver modules, tag nrho cov no yuav muaj ntau cov ntawv luv uas yuav ua rau koj tsis meej pem heev. Qhov tseeb, cov ntawv luv luv no qhia koj cov yam ntxwv ntawm cov qauv no. Cia peb saib ib co ntawm qhov no nyob rau hauv kom meej.
SFP-10G-SR vs SFP-10G-LR vs SFP-10G-LRM vs SFP-10G-ER vs SFP-10G- ZR yog feem ntau cov ntawv sau luv luv hauv yuav luag txhua SFPs. Qhov zoo sib xws thiab qhov sib txawv yog dab tsi? Tam sim no cia peb ua qhov sib piv ntawm qhov zoo sib xws thiab qhov sib txawv, nws yuav pab koj xaiv txoj cai 10G SFP ntxiv module nyob ntawm koj daim ntawv thov.
Thaum koj tab tom saib cov ntsiab lus SR, LRM, LR, ER, ZR siv hauv kev sib txuas lus fiber ntau uas sawv rau qhov sib kis ntawm cov modules no. Ntawm no peb tau txiav txim siab tsuas yog 10Gbps SFPs nkaus xwb los kawm txog nws lub peev xwm kis tau tus mob.
Cia peb pom tias rooj plaub ntawm Multimode Fiber
10 GBase-SR
SR stands rau Short Range, cov transceivers no txhawb kev txuas ntev ntawm 300m dhau ntau hom fiber ntau thiab siv 850nm lasers. 10GBase-SR yog thawj multimode optics specification thiab tseem yog nyob deb ntawm feem ntau siv.
10GBase-SR nws siv ib leeg, tus nqi qis-lub xeev laser sib dhos, nws kuj yog qhov kim tshaj plaws ntawm cov khoom siv kho qhov muag muaj rau 10GbE platform. Txawm li cas los xij, 10GBase-SR yog rhiab heev rau hom fiber ntau. Nws Lub Cev Coding Sublayer 64b/66b PCS tau txhais nyob rau hauv IEEE 802.3 Clause 49 thiab nws lub cev nruab nrab nyob ntawm PMD hauv nqe 52. Nws xa cov ntaub ntawv serialized ntawm tus nqi ntawm 10.3125 Gbit / s.
10 GBase-LRM
LRM txhais tau tias Long Reach Multimode, cov transceivers no txhawb nqa deb txog li 220m hla ntau hom fiber ntau thiab siv 1310nm lasers. Kev hloov mus rau 10GBase-LX4, 10GBase-LRM yuav ncav cuag li 220m tshaj tus qauv multimode fiber ntau, tab sis tsis muaj qhov nyuaj ntawm 10GBase-LX4 optics. Hloov chaw, ib qho laser ua haujlwm ntawm 1310nm yog siv. Qhov no tso cai rau LRM optics tau ntim rau hauv XFP thiab SFP ntxiv rau daim ntawv.
Cia peb pom tias rooj plaub ntawm Single-hom Fiber
10 GBase-LR
LR txhais tau hais tias Ntev mus txog, cov transceivers no txhawb nqa deb txog 10km dhau ib hom fiber ntau thiab siv 1310nm lasers. Tsis muaj qhov deb tsawg kawg nkaus rau LR, ib qho, yog li nws tsim nyog rau kev sib txuas luv luv ntawm ib hom fiber ntau thiab.
10 GBase-ER
ER txhais tau tias Extended Reach, Yeej, cov no tsuas yog qhov sib txawv ntawm cov fiber ntau ntev heev. 10GBASE-ER muaj qhov ncav cuag ntawm 40 kilometers tshaj-engineered txuas thiab 30 km dhau cov qauv txuas. Vim lub zog laser, attenuation yog xav tau rau kev sib txuas tsawg dua 20km ntev.
10 GBase-ZR
ZR tseem sawv rau Extended Reach uas tuaj yeem xa cov ntaub ntawv 10Gbps thiab 80km nrug ntawm ib hom fiber ntau thiab siv 1550nm lasers. Vim lub zog xa hluav taws xob siab heev, qhov tseem ceeb attenuation yog xav tau rau kev sib txuas luv. ZR yog ib hom ntawv tsis raug cai, uas tsis yog technically ib feem ntawm IEEE 802.3ae qauv rau kev sib txuas lus kho vajtse. Kev siv ZR optics yuav tsum tau ua ntej nrog kev ntsuas hluav taws xob kho qhov muag ntawm lub fiber ntau hauv nqe lus nug kom paub meej tias tsis muaj teeb meem xa mus. Ntau lub tuam txhab kho vajtse - suav nrog Cisco- muaj lawv tus kheej kev siv ZR, tab sis lawv tsis tas yuav hla dhau.
