Ntawm daim ntawv, xaiv QSFP28 transceiver zoo li daim ntawv teev npe: phim qhov ceev, wavelength, connector, ncav cuag thiab fiber ntau hom, ces thawb lub module rau hauv 100G chaw nres nkoj. Hauv chav kuaj, feem ntau txaus. Nyob rau hauv ib tug ntau lawm ntaub, nws tsis yog.
Ib QSFP28 module tuaj yeem ua tiav MSA- ua raws, ntaus txoj cai kho qhov muag ncav cuag, siv qhov sib txuas kom raug, thiab tseem raug tsis lees paub los ntawm kev hloov lub sijhawm koj ntxig nws. Lwm tus qauv coj qhov txuas mus kom huv tab sis ceeb toom tsis muaj lub zog kho qhov muag, cuam tshuam lub tswb nrov, sau FEC yuam kev, lossis ntsiag to hloov tus cwj pwm tom qab hloov kho firmware. Tsis muaj ib qho ntawm cov kev ua tsis tiav no tshwm sim ntawm cov ntaub ntawv sib piv.
Phau ntawv qhia no piav qhia txog yuav ua li cas 100G QSFP28 compatibility ua tau tiag tiag ua haujlwm, yuav ua li cas txheeb xyuas ua ntej koj yuav, thiab yuav ua li cas txo qis kev pheej hmoo xa mus thoob Cisco, Arista, Juniper, Dell, NVIDIA/Mellanox thiab dawb-box/SONiC ib puag ncig.
Dab tsi txiav txim siab QSFP28 Compatibility
QSFP28 kev sib raug zoo tsis yog ib qho yog - lossis - tsis muaj xwm txheej. Ib qho module ua haujlwm hauv koj lub network tsuas yog thaum ob peb txheej dhau los: lubform factorhaum QSFP28 tawb, lubEEPROM codingphim qhov hloov pauv xav tau, lubhloov firmwarepaub thiab enables lub module, lubFEC hom thiab breakout configurationpom zoo rau ob qhov kawg, lubDOM / DDM cov ntaub ntawvyog nyeem tau los ntawm koj cov cuab yeej saib xyuas, thiab covtus neeg muag khoom txhawb txoj caitso cai rau lub module hauv koj cov txheej txheem ua haujlwm. Hla ib qho ntawm cov no thiab ib qho module uas "muab cov spec" tseem tuaj yeem ua tsis tiav hauv daim teb. Tus so ntawm phau ntawv qhia no taug kev txhua txheej thiab qhia seb yuav sim nws li cas.
QSFP28 Compatibility tiag tiag txhais li cas
Nws pab kho compatibility li plaub txheej txheej. Ib qho qauv tuaj yeem tshem tawm thawj zaug thiab tseem ua tsis tau ib qho ntawm lwm tus, uas yog vim li cas "MSA- ua raws" ib leeg qhia koj tsawg heev txog kev tsim khoom.
- Kev ua raws li MSA- lub module ua raws li cov qauv tsim, hluav taws xob thiab kev tswj hwm -interface kev cia siab.
- Hloov compatibility- tus tswv cuab yeej paub, pab thiab saib xyuas lub module.
- Txuas kev sib koom tes- ob qho tib si xaus sib tham txog qhov ruaj khov 100G txuas nrog nrawm nrawm, FEC thiab kab teeb tsa.
- Ua haujlwm compatibility- lub module coj tus cwj pwm zoo nrog koj lub firmware, saib xyuas pawg, kev txhawb nqa txheej txheem thiab khoom seem - cov phiaj xwm khoom muag.
Lub cev haum thiab MSA ua raws
Ntawm cov txheej txheem qis tshaj plaws, cov qauv yuav tsum sib koom ua ke nrog cov khoom siv hluav taws xob thiab hluav taws xob nrog QSFP28 tawb thiab hais txog qhov xav tau qis - ceev tswj interface. Qhov no yog qhov kev ua raws li MSA npog. Daim ntawv QSFP28 yog txhais los ntawm SFF/SNIASpecification ntawm SFF-8665, uas standardizes mechanical lub hnab ntawv, latching, host connector thiab tswj interface yog li modules thiab tawb los ntawm txawv makers muaj peev xwm interoperate.
Qhov kev ua raws li MSA ua li castsis yoglav yog tias txhua tus neeg muag khoom hloov pauv yuav lees txais tag nrho cov module. Mechanical thiab interface conformance tau txais lub module rau hauv qhov chaw nres nkoj; nws tsis txiav txim siab seb qhov kev khiav hauj lwm puas kho nws li thawj -chav kawm, saib xyuas qhov muag pom. QSFP28 qhia nws cov txheej txheem siv tshuab nrog tom qab QSFP variants xws li QSFP-DD, yog li lub tawb haum ib leeg yog lub teeb liab tsis muaj zog ntawm kev txhawb nqa - pom qhov noQSFP-DD technical overviewrau li cas cov qauv txheej txheem cuam tshuam.
Kev lees paub tus tswv thiab EEPROM coding
Txhua QSFP28 module nqa cov ntaub ntawv txheeb xyuas thiab tshuaj ntsuam xyuas hauv EEPROM me me uas qhov hloov pauv nyeem ntawm kev ntxig: tus neeg muag khoom npe, tus lej, tus lej xov tooj, chav kawm fais fab, kev txhawb nqa, wavelength, ncav cuag, DOM / DDM teb thiab checksums. Ntau lub keyboards siv cov ntaub ntawv no los txiav txim siab seb yuav kho qhov muag li cas.
Ib qho optically zoo meej module tseem tuaj yeem tshwm sim litsis txhawb, tsis paub, lossis tsuas yog saib xyuas ib nrab yog tias nws qhov profile EEPROM tsis yog qhov hloov pauv tab tom nrhiav. Qhov no yog vim li cas thib peb- cov neeg muag khoom muag Cisco- sib xws, Arista- sib xws, Juniper- tau tshaj thiab Dell- tau tshaj versions ntawm tib hom kev kho qhov muag: lub tshuab kho qhov muag yuav zoo ib yam, tab sis EEPROM coding tau sau kom phim rau tsev neeg lub platform tshwj xeeb. Tus neeg muag khoom coding yog, hauv kev xyaum, ib qho laj thawj feem ntau uas tsis yog QSFP28 module raug lees txais lossis tsis kam lees.
Txuas kev sib koom tes, FEC thiab saib xyuas
Kev lees paub tsis yog qhov kawg. Tom qab qhov hloov pauv txais lub module, qhov txuas tseem yuav tsum tuaj thiab nyob twj ywm. Qhov ntawd yog nyob ntawm qhov kev teeb tsa ceev, FEC hom, hom kev sib cais, hom fiber ntau, polarity, nrug, qib hluav taws xob kho qhov muag, thiab seb qhov kawg siv qhov sib txuam. Forward yuam kev kho tshwj xeeb yog tswj hwm los ntawm qhov cuam tshuamIEEE 802.3 Ethernet qauv, thiab txawv 100G optical hom cia siab tias txawv FEC tus cwj pwm - ib qho taw tes peb rov qab mus rau hauv qab no.
Vim li no, qhov txuas - nce kev xeem ntawm nws tus kheej tsis yog qhov kev xeem sib raug. Kev lees paub tiag tiag tshawb xyuas cov khoom lag luam tshawb pom, DOM / DDM nyeem, kev ruaj ntseg tsheb thiab kev ua yuam kev suav ua ke, tsis yog txawm tias cov kab sib txuas mus ntsuab.
100G QSFP28 Optical Hom thiab lawv txawv li cas
"QSFP28" piav qhia txog daim ntawv, tsis yog optics. 100G optical hom sab hauv tsav lub connector, fiber ntau, kab qauv, FEC kev cia siab thiab breakout tus cwj pwm - thiab yog li ib tug loj ib feem ntawm compatibility zaj dab neeg. Kev kho SR4 thiab DR1 hloov pauv tau vim tias ob qho tib si yog "100G QSFP28" yog qhov yuam kev ntau zaus.
| Optical hom | Fiber ntau | Txuas | Txoj kab ke | Hom ncav cuag | Sau ntawv |
|---|---|---|---|---|---|
| SR4 | Multimode (OM3 / OM4) | MPO-12 | 4 x 25G | ~70–100 m | Common 4x25G breakout tus neeg sib tw |
| PSM4 | Tib - hom | MPO-12 | 4 x 25G (parallel) | ~500 m | Parallel SMF; tawg tawm - phooj ywg |
| CWDM4 / CLR4 | Tib - hom | Duplex LC | 4 x 25G (WDM) | ~ 2 km | Wavelength -multiplexed rau ib khub fiber ntau |
| LR4 | Tib - hom | Duplex LC | 4 x 25G (WDM) | ~ 10 km | De facto ntev - mus txog 100G tus qauv |
| DR 1 | Tib - hom | Duplex LC | 1 x 100G (ib zaug -lambda) | ~500 m | Ib leeg -lambda; FEC / firmware rhiab heev |
| FR1 | Tib - hom | Duplex LC | 1 x 100G (ib zaug -lambda) | ~ 2 km | Kev taw qhia tshiab; txheeb xyuas kev txhawb nqa platform |
| LR 1 | Tib - hom | Duplex LC | 1 x 100G (ib zaug -lambda) | ~ 10 km | Kev taw qhia tshiab; txheeb xyuas kev txhawb nqa platform |
Ob lub tswv yim takeaways ua raws ntawm lub rooj no. Ua ntej, lub4x25G tsev neeg (SR4, PSM4, CWDM4, LR4)yog tus paub tab thiab kev txhawb nqa dav dav, tab sis tsuas yog hom sib npaug (SR4, PSM4) yog cov neeg sib tw 4x25G tiag tiag, thiab kev tawm tsam tseem nyob ntawm lub platform. Multimode ncav cuag SR4 pob khawm ntawm qib cabling, yog li paub meej tias koj cov nroj tsuag tiv thaivOM1–OM5 nrug txwv; rau ib hom - hom, qib fiber ntau tseem ceeb heev, uas tau them rau hauv qhov noOS1 vs OS2 comparison. CWDM4 thiab LR4 muab plaub lub wavelengths mus rau ib tug duplex khub, lub hauv paus ntsiab lus piav nyob rau hauv no primer rauWDM multiplexing.
Thib ob, lubib leeg-lambda tsev neeg (DR1, FR1, LR1)tso tag nrho 100G ntawm ib lub voj voog thiab muaj kev nkag siab ntau dua rau FEC cov chaw thiab kev txhawb nqa firmware dua li cov qauv qub 4x25G. Lub platform uas zoo siab ua haujlwm LR4 yuav xav tau kev tso tawm software tshiab, lossis qhov sib txawv FEC lub neej ntawd, ua ntej nws yuav nqa qhov txuas FR1 lossis LR1. Yog tias koj tab tom siv ib zaug xwb -lambda optics, kho firmware kev txhawb nqa raws li qhov yuav tsum tau ua nyuaj es tsis yog qhov kev xav tom qab.
Vim li cas QSFP28 Module tsis ua haujlwm hauv "Compatible" Chaw nres nkoj
Thaum 100G txuas tsis zoo, tus transceiver tau raug liam ua ntej. Feem ntau qhov laj thawj tiag tiag yog qhov tsis sib haum xeeb ntawm cov module, hloov firmware, qhov chaw nres nkoj teeb tsa, lossis cov nroj tsuag cable. Plaub hom kev ua tsis tiav npog feem ntau ntawm cov xwm txheej.
Qhov hloov pauv tsis lees paub qhov module ID
Qee lub platforms lees paub qhov optic tus kheej ua ntej lawv qhib qhov chaw nres nkoj. Yog tias cov ntaub ntawv EEPROM tsis phim qhov kev xav tau profile, cov tsos mob tuaj yeem pom tau: aunsupported transceivernkag mus rau hauv lub cav, lub interface daignqes, los yog qhov chaw nres nkoj tsav mus rau hauv ib qhoyuam kev-disabledxeev. Cov neeg muag khoom raug cai coding tshem tawm feem ntau ntawm qhov no, tab sis coding ib leeg tsis cia koj hla kev sim cov qauv hloov pauv thiab software version, vim tias cov lus siv tau sib txawv ntawm cov platforms thiab tso tawm.
Cov kev teeb tsa txuas tsis sib xws
Ib qho module tuaj yeem lees paub thiab tseem tsis kam txuas. Cov neeg ua txhaum li niaj zaus yog qhov tsis sib haum xeeb, tsis raug lossis tsis sib haum FEC hom, tsis muaj kev txhawb nqa breakout configuration, hom chaw nres nkoj tsis ncaj ncees lawm, hom transceiver hom tshwj xeeb kab ntawv lossis pab pawg chaw nres nkoj tsis txhawb, lossis ib qho tsis sib xws ntawm qhov kawg. FEC tsis sib haum xeeb yog tshwj xeeb tshaj yog nyob rau ntawm ib qho -lambda DR1/FR1/LR1 txuas, qhov twg ib sab ua rau RS-FEC thiab lwm qhov tsis ua, yog li qhov txuas tsis tau los lossis los nrog nce FEC- suav suav.
DOM / DDM tsis tiav lossis tsis raug
Digital Optical Monitoring (DOM / DDM) nthuav tawm cov khoom siv kho qhov muag thiab tau txais lub zog, qhov kub thiab txias, muab qhov hluav taws xob thiab laser bias tam sim no. Hauv kev tsim khoom nws yog dab tsi ua rau kev sib txuas degrading pom ua ntej nws poob. Ib qho thib peb - tog QSFP28 module tuaj yeem hla kev tsheb thaum qhia DOM tsis zoo, thiab qhov tsis ua haujlwm zoo li tshwj xeeb: tau txais lub zog qhiaN/A, tus nqi kub yog khov ntawm tus lej ruaj khov, cov teb muaj nyob hauv CLI tab sis koj tus SNMP lossis telemetry poller tsis tuaj yeem nyeem lawv, lossis cov chaw pib tsis tau mus ncig vim tias cov chij tswb tsis muaj neeg nyob. Uas yog tolerable ntawm lub rooj ntev zaum thiab ib tug tiag tiag kev khiav hauj lwm qhov sib txawv nyob rau hauv ib tug saib xyuas ntaub. Yog tias DOM tseem ceeb rau koj pab neeg ua haujlwm, nws nyob hauv qhov kev xeem lees paub, tsis yog daim ntawv xav tau.
Firmware hloov tus cwj pwm validation
Hloov firmware txiav txim siab li cas optics raug kuaj pom, txheeb xyuas thiab siv tau, thiab qhov kev hloov pauv ntawm kev tso tawm. Ib qho qauv uas ua haujlwm zoo kawg nkaus ntawm ib tus qauv tuaj yeem coj txawv txawv tom qab kev hloov kho - qhov kev hloov pauv yuav kov EEPROM validation, DOM parsing, FEC defaults, breakout kev them nyiaj yug, los yog cov kev txhawb nqa -transceiver rooj nws tus kheej. Ua ntej ib qho kev hloov kho firmware loj, siv tau tsawg kawg ib qho qauv ntawm txhua qhov kev xa tawm QSFP28 hom ntawm lub hom phiaj tso tawm ntau dua li qhov xav tau txuas ntxiv.
QSFP28 Compatibility los ntawm Hloov Chaw Muag Khoom
Cov ntawv sau no yog cov txheej txheem npaj, tsis lav. Kev sib raug zoo yog qauv-, kab- daim npav- thiab tso tawm- tshwj xeeb, yog li paub meej qhov tseeb ua ntej yuav khoom ntawm qhov ntsuas. Qhov twg tus neeg muag khoom luam tawm cov cuab yeej ua haujlwm sib raug zoo, siv nws ua thawj qhov kev siv.
Cisco
Cisco platforms zoo li yuav nruj dua nrog tsis yog -Cisco optics ntau dua li ntau lub lag luam hloov pauv, thiab Cisco tau hais meej tias nws tsis txhawb peb - tog optics ua ib feem ntawm nws txoj cai muaj cai. Ib qho tsis yog -Cisco-coded module yuav raug tshaj tawm tias tsis muaj kev txhawb nqa lossis xav tau lub platform- tshwj xeeb tuav nyob ntawm Nexus lossis Catalyst qauv thiab NX-OS lossis IOS-XE tso tawm. Pib los ntawm officialCisco Transceiver Module Group (TMG) compatibility matrixkom paub meej tias qhov twg optics tau teev tawm tsam koj lub cuab yeej.
Tsis txhob yuav Cisco- khi QSFP28 modules los ntawm hom kho qhov muag ib leeg - 100G LR4 uas ua haujlwm hauv ib lub platform Nexus yuav coj txawv ntawm lwm qhov. Ua ntej ntim kev yuav khoom, lees paub tus qauv tseeb, NX-OS/IOS-XE version, qhov yuav tsum tau Cisco-coding sib xws, DOM/DDM tus cwj pwm, breakout thiab FEC kev them nyiaj yug, thiab koj txoj kev txhawb nqa ntawm thib peb- tog optics. Nyob rau hauv lub thawv, qhia interface transceiver nthuav dav yog txoj kev ceev tshaj plaws kom paub meej txog kev lees paub thiab nyeem DOM. Kho Cisco-cov modules tau tshaj li ib yam dab tsi koj sim ntawm lub hom phiaj software, tsis yog ib yam dab tsi uas koj xav tau vim hais tias optical spec kab.
Arista
Arista keyboards feem ntau muaj kev tso cai ntau dua nrog zoo - tsim thib peb - tog optics ntau dua li cov platforms nruj tshaj plaws, thiab hauv ntau qhov chaw EOS tau ua raws li QSFP28 modules tuaj txog yam tsis muaj tus cwj pwm kaw. Qhov ntawd yog ib qho kev nyiam, tsis yog daim ntawv pub dawb. EOS version, hloov tsev neeg, hom kho qhov muag, DOM tus cwj pwm, chav kawm fais fab thiab chaw nres nkoj teeb tsa tseem cuam tshuam rau qhov tshwm sim, thiab siab - lub zog ntev - ncav cuag optics, breakout daim ntawv thov thiab tshiab dua ib zaug -lambda modules tseem lav kuaj. Tshawb xyuas kev lees paub thiab DOM nrog kev qhia interface transceiver, thiab paub meej tias FEC, kev coj tus cwj pwm tawg, thiab lub hnab ntawv thermal/power ntev - mus txog qhov chaw.
Juniper
Juniper tus cwj pwm nyob ntawm qhov tseeb platform, Junos tso tawm, hom chaw nres nkoj thiab tus cim transceiver - ib qho qauv tau txais thiab saib xyuas tag nrho ntawm ib qho QFX, MX lossis PTX yuav tsis nyob rau lwm qhov. Xyuas cov nomJuniper Hardware Compatibility Toolrau koj lub hom phiaj platform; nws tseem chij seb puas yog qhov muab optic txhawb kev saib xyuas. Nco ntsoov tias JTAC tsis muab kev txhawb nqa rau thib peb -party optical modules, yog li qhov tseem ceeb rau hauv koj txoj kev txhawb nqa. Ntawm lub cuab yeej, qhia qhov cuam tshuam kev kuaj mob optics rov qab DOM nyeem ntawv. Txheeb xyuas lub platform, Junos tso tawm, PID lossis sib haum EEPROM profile, DOM kev txhawb nqa, kev txhawb nqa tawm, thiab seb hom DR1 / FR1 / LR1 tshiab puas tau txais kev txhawb nqa ntawm cov khoom siv ntawd.
Dell PowerSwitch
Dell PowerSwitch platforms tuaj yeem nkag siab rau EEPROM teb, DOM parsing thiab software tus cwj pwm, thiab qee qhov thib peb -party modules dhau kev khiav tsheb thaum qhia cov lus ceeb toom, cov ntaub ntawv DOM tsis tiav, lossis cov khoom muag tsis sib haum. Paub meej tias OS10 lossis SONiC version, Dell- sib xws coding, DOM / DDM nyeem, lub platform txhawb nqa-optics daim ntawv teev npe, FEC thiab cov kev xav tau tawg, thiab tus cwj pwm hla kev hloov kho firmware. Yog tias Dell hloov chaw zaum hauv cov ntaub ntau lawm, siv tau lub module ntawm tib lub software tsim ua ntej muab qhov kev txiav txim loj.
NVIDIA / Mellanox
NVIDIA/Mellanox ib puag ncig yog ib qho ntawm cov kev txwv ntau dua, tshwj xeeb tshaj yog nyob rau hauv AI, HPC, Ethernet thiab InfiniBand fabrics qhov twg validated interconnects yog tus qauv. Ntawm no txuas kev ruaj ntseg tsis yog nyob ntawm qhov muag pom xwb tab sis ntawm cov teeb liab kev ncaj ncees, kev txhawb nqa firmware, FEC tus cwj pwm thiab kev siv lub platform; ib qho module tuaj yeem kuaj pom thiab tseem tsis tuaj yeem nqa qhov txuas yog tias lub platform tsis lees txais lossis tsis muaj kev txhawb nqa. NVIDIA cov ntaub ntawv nws tsim nyog interconnects ntawm lubLinkX cables thiab transceiversnplooj ntawv, thiab sau ntawv tias tsis tsim nyog thib peb - cov khoom siv thib peb tuaj yeem ua haujlwm tab sis tsis muaj kev lees paub ua haujlwm. Paub meej tias qhov hloov pauv thiab tus qauv hloov pauv, Ethernet vs InfiniBand hom, firmware version, daim ntawv teev cov kab hluav taws xob / cov qauv siv tau, FEC cov cai, ncav cuag thiab hom, thiab tus neeg muag khoom siv tau tawm tsam tib lub platform. Rau lub hom phiaj- tseem ceeb AI lossis HPC fabrics, nyiam cov khoom siv kho qhov muag pom zoo lossis cov kev sim ua tau zoo sib xws.
SONiC thiab dawb -box hloov
SONiC thiab dawb- lub thawv hloov pauv feem ntau yog qhib dua li cov txheej txheem OEM, tab sis "qhib" tsis yog "universal." Cov txiaj ntsig tau nyob ntawm qhov hloov ASIC, tus tsav tsheb platform, NOS tsim, EEPROM parser, transceiver- kev pabcuam kev tswj hwm, kev sib cais thiab kev teeb tsa chaw nres nkoj. Ib qho qauv tuaj yeem txuas tau tab sis tshaj tawm cov khoom tsis tiav lossis DOM cov ntaub ntawv - tau txais hauv qee tus nqi- qhov ntsuas kub siab lossis chaw kuaj mob, tsis yog nyob rau hauv cov ntaub ntau lawm uas xav tau kev saib xyuas kom raug thiab nrhiav cov cuab tam. Ntsuam xyuas tus qauv hloov pauv thiab NOS tsim ntau dua li xav tias txhua tus MSA- ua raws cov qauv coj zoo ib yam.
Tus neeg muag khoom-Coded vs MSA-Ua raws li VS Programmable QSFP28 Modules
Cov chav kawm zoo yog nyob ntawm koj ib puag ncig, kev pheej hmoo kam rau ua thiab cov khoom lag luam zoo.
Tus neeg muag khoom-coded QSFP28 modules
Tus neeg muag khoom-coded modules nqa EEPROM cov ntaub ntawv sau kom phim ib tus neeg muag khoom hloov tshwj xeeb lossis tsev neeg lub platform. Lawv feem ntau yog qhov kev xaiv nyab xeeb tshaj plaws rau kev tsim khoom: kev paub txog kev paub ntau dua, zoo dua DOM / DDM tus cwj pwm, thiab kev txhawb nqa tsawg dua. Mus txog rau lawv thaum koj tab tom xa mus rau qhov ntsuas, lub network yog ntau lawm- tseem ceeb, koj khiav Cisco/Juniper/Dell/NVIDIA platforms, saib xyuas qhov tseeb teeb meem, los yog koj xav kom tsis txhob unsupported -module surprises. Kev lag luam tawm - tawm yog tswj xyuas cov khoom muag sib txawv rau ib tus neeg muag khoom hloov pauv.
Generic MSA- ua raws QSFP28 modules
Generic MSA modules tuaj yeem ua tau zoo nyob rau hauv qhov chaw qhib, chaw kuaj mob, kuaj cov tes hauj lwm thiab dawb - lub thawv xa tawm uas tsis tas yuav tsum muaj kev lees paub tus neeg muag khoom nruj. Lawv txiav cov nqi them ua ntej thiab ua kom yooj yim rau cov khoom muag kho qhov muag, tab sis lawv muaj kev pheej hmoo ntau dua hauv kev txwv qhov chaw hloov pauv.Thaum tsis siv lawv:hauv Cisco/Juniper/NVIDIA ntau lawm ntaub, nyob qhov twg DOM/DDM raug yog ib qho kev soj ntsuam yuav tsum tau, ntawm ib tug -lambda txuas nrog nruj FEC / firmware dependencies, los yog qhov twg koj cov txheej txheem txhawb yuav hais kom koj rov tsim dua qhov tsis raug ntawm optics tsim nyog. Tsis txhob xav tias ib qho generic MSA module hla Cisco, Juniper, Dell thiab NVIDIA platforms yam tsis muaj kev lees paub.
Programmable QSFP28 modules
Programmable modules tuaj yeem hloov kho rau cov neeg muag khoom sib txawv nrog cov cuab yeej sib xws, uas yog qhov muaj txiaj ntsig zoo rau ntau-cov neeg muag khoom sib txuas, cov khoom siv thaum muaj xwm ceev thiab thaj chaw- pab pawg. Lawv txo cov kev xav tau ntawm cov khoom ruaj khov -coded modules rau txhua lub platform, tab sis lawv xav tau cov txheej txheem tswj: cov neeg ua haujlwm tau txais kev cob qhia, kev rov tsim dua tshiab tom qab programming, thiab cov kauj ruam meej meej. Qhov kev pheej hmoo tseem ceeb yog lub module recoded lossis sau npe rau lub hom phiaj tsis raug.
Yuav Ua Li Cas Xaiv Txoj Cai QSFP28 Module
Qhia qhov kev txiav txim siab rau koj qhov xwm txheej es tsis yog rau cov kab uas pheej yig tshaj plaws. Lub matrix hauv qab no yog luv luv version.
| Network scenario | Pom zoo QSFP28 hom | Vim li cas |
|---|---|---|
| Ib leeg - neeg muag khoom Cisco lossis Juniper ntau lawm network | Tus neeg muag khoom-coded QSFP28 | Txhim khu kev lees paub thiab kev saib xyuas raug; kev txhawb nqa huv |
| Mixed Cisco / Arista / Juniper network | Tus neeg muag khoom-coded rau ib lub platform, lossis programmable spares | Kev coj tus cwj pwm zoo nrog kev tswj xyuas cov khoom seem |
| SONiC / dawb-box / lab | MSA{0}}ua raws QSFP28 | Tus nqi qis dua thiab cov khoom lag luam yooj yim dua qhov twg tsis tas yuav muaj coding nruj |
| AI / HPC ntaub | Kev lees paub lossis tus neeg muag khoom - kuaj pom qhov muag | Qhov txuas qis dua -kev ruaj khov thiab teeb liab- kev pheej hmoo ntawm kev ncaj ncees |
| Breakout xa tawm (4x25G) | SR4 / PSM4 tau lees paub tawm tsam lub platform | Parallel optics nplua breakout; paub meej hom chaw nres nkoj, FEC thiab polarity ua ntej |
Yuav Ua Li Cas Ntsuam Xyuas QSFP28 Compatibility Ua ntej xa tawm
Txoj kev nyab xeeb tshaj plaws yog kom tsim nyog cov qauv ua ntej yuav khoom ntim. Tsib kauj ruam ua rau kev sim rov ua dua.
Kauj ruam 1 - Xa cov qauv rau txhua tus neeg muag khoom thiab hom
Rau txhua tus neeg muag khoom hloov pauv thiab hom module koj npaj siab yuav xa tawm, xaj ib qho qauv me me. Yog hais tias lub network spans Cisco, Arista thiab Juniper, tsim nyog rau tag nrho peb; tsis txhob sim ib lub platform thiab xav tias qhov tshwm sim dav dav.
Kauj ruam 2 - Xyuas kom paub tseeb
Ntxig lub module thiab paub meej tias qhov hloov pauv qhia nws kom raug: tus neeg muag khoom / ntu- tus lej lees paub, muaj peev xwm nrawm nrawm, hom transceiver raug, DOM / DDM muaj, tsis muaj kev txhawb nqa - module tswb, thiab tsis muaj qhov yuam kev -lub xeev tsis taus. Yog tias nws pom tias tsis paub lossis tsis txhawb, txiav txim siab seb qhov laj thawj yog EEPROM coding, firmware txhawb, lossis txoj cai platform ua ntej mus ntxiv.
Kauj ruam 3 - Tsim ib qhov txuas tiag tiag
Txuas mus rau qhov xav tau deb-kawg ntaus ntawv lossis tus neeg sawv cev sawv cev-hauv thiab txheeb xyuas qhov txuas- nce raws li txoj cai, nrawm nrawm, raug FEC hom, xa thiab tau txais lub zog nyob rau hauv ntau, ntxuav qhov yuam kev, thiab kev ruaj ntseg tom qab ob qho tib si bounce thiab lub cev rov qab. Ib qho module uas tau kuaj pom tab sis tsis tuaj yeem tuav qhov txuas tsis yog tsim tawm -npaj.
Kauj ruam 4 - Khiav tsheb khiav
Hla kev khiav mus rau lub qhov rais muaj txiaj ntsig - ob peb teev yam tsawg kawg nkaus, ntev dua rau cov ntaub ntawv tseem ceeb - thiab saib CRC yuam kev, FEC- suav kho, txuas flaps, kub tswb thiab pob ntawv poob. Rau ib puag ncig tseem ceeb, sim nyob rau hauv qhov tseeb load thiab ntawm qhov kub thiab txias qhov optic yuav pom tiag tiag.
Kauj ruam 5 - Sau cov kev pom zoo configuration
Rau txhua qhov kev pom zoo module, sau tus neeg muag khoom tus lej, EEPROM coding phiaj, hloov qauv, firmware version, chaw nres nkoj hom, FEC hom, breakout hom, qhov kev xeem, thiab DOM / DDM raws li txoj cai. Cov ntaub ntawv ntawd dhau los ua koj qhov kev sib raug zoo hauv matrix thiab txuag tus neeg tom ntej los ntawm kev rov- khiav tag nrho cov kev tawm dag zog.
Kev lees txais
Siv qhov qhia meej dhau los / tsis ua haujlwm yog li "nws zoo li zoo" yeej tsis txiav txim siab yuav khoom.
| Tshawb xyuas | Pass mob |
|---|---|
| Module paub | Kho tus neeg muag khoom, ib feem naj npawb, hom thiab ceev; tsis muaj lub tswb tsis txhawb nqa |
| DOM / DDM nyeem tau | Tx/Rx fais fab, kub, voltage thiab bias nyeem tau hauv CLI thiab ntawm SNMP/telemetry |
| Txuas kev tsim kho | Txuas ntawm qhov ceev ceev thiab FEC hom |
| Kev ruaj ntseg | Link ciaj sia interface bounce thiab lub cev reseat |
| Yuam kev suav hauv qab tsheb | Tsis muaj CRC qhov ua yuam kev thiab tsis muaj FEC nce ntxiv - kho dua tshiab ntawm qhov ntsuas qhov rai |
| Firmware | Tested tso ntaub ntawv; coj tus cwj pwm rov- kuaj xyuas tom qab kev hloov kho tshiab |
Field Note: qhov twg cov kev xeem no khwv tau lawv khaws cia
Ib qho piv txwv ntawm tus neeg sawv cev pom thoob plaws cov ntaub sib xyaw: ib pawg ntawm 100G SR4 generic modules dhau qhov txuas nrawm- nce mus kuaj thiab nkag mus rau hauv nplooj - qaum txheej. Cov chaw nres nkoj hauv 100G yog qhov zoo. Lub lis piam tom qab, kev sim kho qee qhov ntawm cov chaw nres nkoj rau 4x25G breakout ua tsis tiav ntawm ib pawg chaw nres nkoj - cov modules muaj kev noj qab haus huv, tab sis cov kab ntawv ntawd qhov kev txhawb nqa thiab FEC defaults yeej tsis siv rau hom ntawd. Cais, tom qab kev hloov kho firmware niaj hnub, DOM nyeem ntawm tib lub modules pib rov qab los.N/Avim tias qhov kev tso tawm tshiab cais lawv EEPROM txawv. Tsis muaj teeb meem yog qhov teeb meem kho qhov muag; ob qho tib si yuav raug ntes los ntawm kev txheeb xyuas kev tawm tsam thiab kev tshaj tawm - txhim kho DOM daim tshev hauv cov kauj ruam saum toj no. Tus nqi hla kev tsim nyog tau tshwm sim tom qab, raws li kev hloov pauv - qhov rai tsis ua haujlwm thiab saib xyuas qhov muag tsis pom, tsis yog ntawm kev yuav khoom.
FAQ
Q: QSFP28 EEPROM coding yog dab tsi?
A: Nws yog cov ntaub ntawv txheeb xyuas thiab muaj peev xwm khaws cia hauv module's EEPROM - tus neeg muag khoom, tus lej, hom, ncav cuag, chav kawm fais fab thiab DOM teb - uas qhov hloov tau nyeem ntawm kev ntxig. Tus neeg muag khoom coding sau cov ntaub ntawv no kom phim rau tsev neeg lub platform tshwj xeeb yog li tus tswv tsev kho qhov muag raws li kev txhawb nqa thiab saib xyuas tag nrho.
Q: Vim li cas kuv QSFP28 transceiver kuaj pom tab sis qhov txuas tau poob?
A: Kev tshawb nrhiav thiab kev sib txuas - nce yog nyias txheej. Cov laj thawj ib txwm yog FEC tsis sib haum (ntau ntawm ib zaug -lambda DR1/FR1/LR1), qhov nrawm lossis chaw nres nkoj- hom tsis sib haum, tsis muaj kev txhawb nqa breakout configuration, ib qho tsis sib haum deb-end module, lossis transceiver hom kab ntawv tsis txhawb hauv qhov chaw nres nkoj. Xyuas FEC thiab breakout nqis ntawm ob qhov kawg ua ntej.
Q: Puas yog QSFP28 LR4 xav tau FEC?
A: 100G-LR4 feem ntau tuaj yeem khiav yam tsis muaj FEC, uas yog ib qho laj thawj nws tau dhau los ua qhov tseeb ntev - mus txog 100G xaiv. Tib -lambda hom (DR1/FR1/LR1) feem ntau yuav nyob ntawm RS-FEC. Vim tias qhov kev hloov pauv txawv ntawm lub platform thiab tso tawm, lees paub qhov xav tau FEC hom tiv thaiv cov ntaub ntawv hloov pauv thiab cov txheej txheem IEEE 802.3 cuam tshuam ntau dua li qhov xav tau.
Q: QSFP28 modules puas tuaj yeem siv rau 4x25G breakout?
A: Qee zaum. Parallel optics xws li SR4 thiab PSM4 yog cov neeg sib tw sib tw tiag tiag, tab sis kev txhawb nqa kuj nyob ntawm qhov hloov pauv, pab pawg chaw nres nkoj, teeb tsa, cable cog thiab firmware. Ib txwm txheeb xyuas qhov kev txhawb nqa breakout rau qhov chaw nres nkoj tshwj xeeb ua ntej xa mus.
Q: Puas yog thib peb - tog QSFP28 modules muaj kev nyab xeeb rau kev tsim khoom lag luam?
A: Lawv tuaj yeem yog, thaum lawv yog tus neeg muag khoom raug cai -coded, validated ntawm lub hom phiaj hloov thiab software, thiab txais los ntawm koj cov txheej txheem txhawb nqa. Qhov kev pheej hmoo nce siab ntawm cov platforms nruj (Cisco, NVIDIA), ntawm ib qho -lambda txuas, thiab nyob qhov twg DOM / DDM qhov tseeb yog yuav tsum tau. Ua cov qauv tsim nyog thiab sau cov txiaj ntsig ua ntej yuav khoom ntawm qhov ntsuas.
Q: Puas yog MSA- ua raws li txhais tau tias cov qauv yuav ua haujlwm hauv kuv qhov hloov?
A: Tsis yog ntawm nws tus kheej. Kev ua raws li MSA suav nrog cov qauv tsim thiab kev sib txuas sib xws, tab sis cov neeg muag khoom hloov pauv tseem siv lub platform -tso cai validation, EEPROM checks, firmware yuav tsum tau thiab cov kev txhawb nqa rau saum nws.
Q: Vim li cas QSFP28 module ua haujlwm hauv Arista tab sis tsis Cisco?
A: Cov neeg muag khoom siv thib peb - tog optics txawv. Arista platforms feem ntau muaj kev tso cai ntau dua, thaum Cisco siv qhov kev siv tau nruj dua thiab tsis txhawb nqa thib peb - tog optics raws li nws txoj cai muaj cai, yog li tus cwj pwm txawv ntawm cov qauv thiab software version.
Q: Kuv yuav tsum xeem dab tsi ua ntej yuav QSFP28 modules hauv ntau?
A: Module nrhiav tau, DOM / DDM nyeem ntawv, txuas -txog li xwm txheej, FEC hom, breakout hom, kev ruaj ntseg tsheb, cov txee yuam kev, thiab tus cwj pwm tom qab rov qhib dua thiab rov pib dua - thiab sau cov qauv hloov pauv thiab firmware version tawm tsam txhua qhov tshwm sim.
Xaus
QSFP28 compatibility yog txiav txim los ntawm deb tshaj qhov ceev thiab ncav cuag. Lub platform hloov, firmware version, EEPROM coding, FEC nqis, kev txhawb nqa tawm, DOM / DDM tus cwj pwm thiab koj txoj kev txhawb nqa kev ua haujlwm txhua tus zaum ntawm datasheet match thiab ruaj khov 100G txuas. Hom kho qhov muag hauv lub module - 4x25G piv rau ib leeg-lambda - hloov cov kev xav tau dua.
Rau feem ntau cov tes hauj lwm ntau lawm, tus neeg muag khoom -coded lossis platform-validated QSFP28 modules yog qhov tsawg tshaj plaws - kev xaiv xaiv; rau cov khoom sib xyaw- cov neeg muag khoom vaj khoom tsev, cov programmable modules tuaj yeem khaws cov khoom seem tswj tau thaum tswj cov txheej txheem recoding. Txoj cai kev khiav hauj lwm luv luv: txheeb xyuas tus qauv tseeb thiab firmware ua ntej koj yuav, tsim nyog cov qauv tiv thaiv qhov tseeb dhau los / tsis ua haujlwm ua ntej koj xa mus, thiab sau rau txhua qhov kev pom zoo module-thiab-platform ua ke yog li kev xa mus tom ntej pib los ntawm cov pov thawj es tsis txhob siv qhov kev xav.
