Fiber transceiver SFP ua tau raws li cov qauv ntaub ntawv
Dec 01, 2025|
Muaj ib qho laj thawj peb pheej tham txog cov qauv. Tsis yog vim nws lom zem-ua ncaj ncees, nyeem IEEE cov ntaub ntawv thaum 2 teev sawv ntxov tsis muaj leej twg xav txog lub sijhawm zoo-tab sis vim tias thaum kojtransceivertxiav txim siab mus pov ib tug haum nyob rau hauv ntau lawm, koj yuav xav koj yuav tau them mloog.
Dab tsi yog MSA, thiab Vim Li Cas Koj Yuav Tsum Saib Xyuas?
MSA sawv cev rau Multi-Source Agreement. Qhov ntawd yog lub ntsiab lus tho txawv. Nov yog qhov nws txhais tau li cas: ib pawg ntawm cov tuam txhab tau txais hauv chav, tej zaum sib cav rau lub hlis, thiab thaum kawg tau pom zoo yuav ua li cas los tsim kho qhov muag transceivers kom lawv tau ua haujlwm ua ke.
Ua ntej MSA? Chaos. Tseeb tiag.
Koj yuav tau SFP los ntawm ib tus neeg muag khoom, ntsaws rau hauv qhov hloov ntawm lwm tus neeg muag khoom, thiab ... tsis muaj dab tsi. Los yog phem dua, cov lus yuam kev uas qhia rau koj paub tseeb tsis muaj cov ntaub ntawv tseem ceeb. Network engineers poob pw tsaug zog tshaj qhov no. Tej zaum tej zaum tseem muaj npau suav phem.
SFP MSA (cov ntaub ntawv raug cai nyob rau hauv INF-8074i, yog tias koj yog hom uas nyiam nyeem cov ntsiab lus tseem ceeb) tau ntsia rau qhov tseem ceeb:
Lub cev qhov ntev: 8.5 x 13.4 x 56.5 mm
20-pin hluav taws xob connector specifications
EEPROM nco daim ntawv qhia
Digital diagnostics interface
Kev siv hluav taws xob txwv
Qhov kawg qhov tseem ceeb tshaj li cov neeg paub. Tus qauv lub hwj chim ntawm ib ncig ntawm 1W rau SFP modules. Thaum SFP+ tuaj yeem txhawb nqa 10 Gbps, kev siv hluav taws xob yuav tsum nyob twj ywm tswj tau -feem ntau 1.5W max- lossis koj yuav muaj teeb meem thermal cascading los ntawm koj cov khoom khib nyiab.
IEEE 802.3 Kev sib txuas
Yog li MSA ua haujlwm rau daim ntawv foos. Zoo heev. Tab sis li cas txog qhov tseeb cov ntaub ntawv xa mus?
Qhov ntawd yog qhov uas IEEE 802.3 nkag rau hauv daim duab. Tshwj xeeb, rau Gigabit Ethernet SFPs, koj tab tom saib IEEE 802.3z (1000BASE-X) ua raws. Rau 10 Gigabit? IEEE 802.3ae txhais cov txheej txheem PHY.
Qee cov qauv tseem ceeb tsim nyog paub txog:
1000BASE-SX- Ua haujlwm dhau ntau hom fiber ntau, feem ntau 850nm wavelength. Koj tus neeg ua haujlwm rau kev ua haujlwm luv luv hauv cov chaw khaws ntaub ntawv. Max nrug deb ntawm qhov chaw nyob ib ncig ntawm 550m ntawm niaj hnub OM3 / OM4 fiber ntau, txawm hais tias ncaj ncees koj yuav tsis tshua thawb nws deb ntawm kev xyaum.
1000BASE-LX- Tib - hom fiber ntau, 1310nm. Mus ntxiv - mus txog 10km ntawm tus qauv SMF. Txawm li cas los xij, muaj kev ntes: yog tias koj siv qhov no dhau los ntawm ntau hom fiber ntau (uas qee tus neeg ua, tsis txhob nug kuv vim li cas), koj xav tau hom kev kho cua sov cable lossis tej yam txawv. Lub teeb tsis coj li koj xav tau.
10GBASE-SR- 10 Gig sib npaug rau luv luv ncav cuag . 850nm VCSEL-raws li, tsim los rau ntau hom. Koj yuav pom 300m ntawm OM3 fiber ntau hais nyob txhua qhov chaw, tab sis tiag tiag -kev ua haujlwm hauv ntiaj teb nyob ntawm qhov zoo ntawm cable zoo thiab kev huv ntawm cov khoom sib txuas.
10GBASE-LR- Ntev ncav cuag, ib zaug - hom, 1310nm. Tus qauv ncav cuag yog 10km, tab sis kuv tau pom cov kev sib txuas ua haujlwm huv si ntawm kev ncua ntev hauv cov xwm txheej zoo. Tsis yog tias koj yuav tsum tsim ib ncig ntawm qhov ntawd.
SFF-8472: The Unsung Hero
Nov yog qee yam uas tsis tau txais kev saib xyuas txaus: Digital Diagnostics Monitoring specification, SFF-8472.
Qhov no yog qhov tso cai rau koj lub transceiver tiag tiag qhia koj tias muaj dab tsi tshwm sim hauv nws. Kub, laser bias tam sim no, xa hluav taws xob, txais lub zog, muab hluav taws xob-txhua yam siv tau los ntawm I2C interface.
Vim li cas qhov no tseem ceeb?
Vim tias kev daws teeb meem ntawm qhov txuas tsaus nti fiber ntau yam tsis muaj DOM cov ntaub ntawv zoo li kuaj pom qhov teeb meem tsheb qhov muag tsis pom. Puas yog laser tuag? Puas yog sab txais tau txais tsis muaj teeb liab? Puas yog ib qho overheating? Nrog DOM, koj paub. Yog tsis muaj nws, koj nyob nraum twv.
Tus txheej txheem txhais lub tswb ceeb toom ib yam nkaus. Kev ceeb toom siab thiab qis, siab thiab qis tswb. Koj lub network kev tswj hwm tuaj yeem txheeb xyuas cov txiaj ntsig no thiab ceeb toom koj ua ntej lub transceiver ua tsis tiav. Kev saib xyuas tsis tu ncua 3 teev sawv ntxov hu xov tooj. Txawm hais tias cia peb ua siab ncaj- koj tseem yuav tau txais cov xov tooj ntawd.
Tus Muag Khoom Xauv-Hauv Game
Tam sim no ntawm no yog qhov twg tau txais ... nthuav.
Cov tuam txhab loj tshaj plaws -Cisco, Juniper, HP, cov neeg raug liam ib txwm muaj-qee zaum lawv cov kev hloov pauv los tshuaj xyuas lub transceiver's EEPROM rau kev txheeb xyuas tus neeg muag khoom tshwj xeeb. Yog tias lub module tsis phim lawv cov npe "pom zoo", koj tau txais lus ceeb toom. Qee zaum kev ua haujlwm txwv. Qee zaum outright rejection.
Qhov no puas tsim nyog? Tsis muaj.
Kev ua raws li MSA txhais tau hais tias lub transceiver ua tau raws li txhua yam khoom siv hluav taws xob thiab khoom siv. Nws yuav tsum ua haujlwm. Tus neeg muag khoom xauv yog qhov kev txiav txim siab ua lag luam, tsis yog qhov yuav tsum tau ua.
Thib peb- tog transceiver manufacturers xam qhov no tawm xyoo dhau los. Lawv ua haujlwm tau zoo EEPROMs, ua kom lawv cov modules tshaj tawm cov cai muag khoom raug cai. Ib yam kev ua haujlwm. Ib feem ntawm tus nqi. Raws li qee qhov kev tshuaj xyuas kev lag luam, thib peb - tog optics tau loj hlob nyob ib puag ncig 8% xyoo- dhau- xyoo raws li cov neeg ua haujlwm hauv network paub tias lawv tau them tus nqi ntau heev rau kev tsim khoom lag luam.
Daim ntawv thov Fiber Channel
Tsis yog txhua yam yog Ethernet, tau kawg.
Fiber Channel (FC) muaj nws tus kheej cov qauv, thiab SFP transceivers ua lag luam ib yam nkaus . 4G, 8G, 16G FC tus nqi-txhua yam txhawb nqa hauv SFP/SFP+ daim ntawv foos.
Cov ntaub ntawv tseem ceeb ntawm no yog FC-PI (Physical Interface) series. FC-PI-4 thiab FC-PI-5 npog cov kev qhia ceev dua. Cov ntaub ntawv chaw cia khoom network nyob ntawm cov khoom no. Thaum koj lub lag luam SAN muaj qhov teeb meem kev ua tau zoo, ib tus neeg kuaj xyuas cov ntawv nyeem DOM thiab FC ua raws.
Dab tsi nthuav txog FC daim ntawv thov yog qhov rhiab heev rau latency. Cov qauv kev cia tsheb sib txawv ntawm cov tsheb khiav hauv network. Bursty, siab -queue- qhov tob ua haujlwm uas rau txim rau qhov tsis sib xws ntawm transceiver thiab hloov. Kev ua raws li tus qauv yuav tseem ceeb dua.
Kev ntsuas kub
Tsis yog txhua tus transceivers raug tsim sib npaug ntawm no.
Kev lag luam kub ntau yamKub: 0 degree txog 70℃rooj plaub. Zoo rau huab cua- tswj cov chaw khaws ntaub ntawv. Feem ntau kev xa tawm. Standard khoom.
Muaj qhov kub thiab txias: -40℃txog 85℃. Yuav tsum muaj rau kev xa tawm sab nraum zoov, cov tsev pheeb suab hauv xov tooj tsis muaj HVAC, qee yam kev siv tub rog. Cov modules no raug nqi ntau dua thiab rau qhov laj thawj zoo-lub laser thiab photodiode yuav tsum muaj kev tswj hwm kev ua haujlwm thoob plaws lub viav vias siab.
Extended kub transceivers siv sib txawv tivthaiv binning thiab tej zaum txawv kiag li laser designs. Qhov kev ntsuam xyuas yog nruj dua. Tus nqi cuam tshuam nws.
Yuav Ua Li Cas Txog Yav Tom Ntej?
SFP-DD (Double Density) twb nyob ntawm no, ntim ob txoj kab rau hauv SFP hneev taw rau 50G thiab 100G daim ntawv thov. Cov txheej txheem MSA txuas ntxiv- cov kev qhia tshwj xeeb tshiab, cov qauv tshiab, kev hloov pauv tsis tu ncua.
Kev xa tawm 400G nce siv QSFP-DD thiab OSFP. Cov no yog cov qauv sib txawv nkaus xwb, tab sis lub hauv paus ntsiab lus tseem nyob: ntau- cov ntawv cog lus ua kom muaj kev sib tw ua lag luam, IEEE cov qauv ua kom muaj kev sib koom tes, kev kuaj mob tshwj xeeb ua rau kev tswj hwm.
Tus qauv rov ua nws tus kheej. Cov neeg muag khoom qhia cov kev qhia tshwj xeeb. Lwm tus koom nrog. Kev sib cav tshwm sim. Thaum kawg, cov qauv tshwm sim. Kev lag luam txav mus tom ntej.
Nws tsis yog ua haujlwm glamorous. Tsis muaj leej twg tau txais kev zoo siab txog kev nyeem pinout specifications. Tab sis txhua qhov txuas kho qhov muag txhim khu kev qha koj puas tau siv? Nws tshwm sim vim tib neeg obsessed tshaj cov ntsiab lus no.
Daim Ntawv Qhia Ceev: Ua Raws Li Cov Qauv rau SFP Modules
| Txuj | Dab tsi Nws npog | Cov ntaub ntawv tseem ceeb |
|---|---|---|
| SFP MSA | Form factor, hluav taws xob interface | INF-8074 ib |
| SFP + MSA | Txhim kho 10G hluav taws xob interface | SWB-8431 |
| IEEE 802.3z | 1000BASE-X Ethernet | Nqe 38 |
| IEEE 802.3 ua | 10GBASE Ethernet | Nqe 49-52 |
| SWB-8472 | Digital Diagnostics Monitoring | Rev 12.x |
| FC-PI-4/5 | Fiber Channel Physical Interface | ANSI T11 |
Thaum koj lub network khiav huv si thaum 3 teev sawv ntxov thiab tsis muaj leej twg yuav tsum sawv, qhov ntawd yog cov qauv ua haujlwm tsis pom. Lub unsexy infrastructure uas ua rau txhua yam ua tau.