10G SFP + Transceivers Ua Haujlwm hauv Kev Lag Luam

 

Qhov Kev Lag Luam Tiag Tiag Tom Qab 10 Gigabit Txais Tos

 

Thaum pawg neeg yuav khoom ntsuas kev hloov kho hauv lub network, qhov kev sib tham inevitably rov qab mus rau tus nqi -ib - chaw nres nkoj. A10 GbE transceiverkhiav ntawm OM3 multimode fiber ntau (ua tiav 300m ncav cuag) feem ntau raug nqi ib feem ntawm qhov OEM-cov khoom lag luam tau ua tsib xyoos dhau los. Thib peb- cov tuam txhab lag luam tau ua dej nyab lub lag luam nrog MSA- cov kev ua raws cai uas dhau tib yam IEEE 802.3ae specifications. Tab sis ntawm no yog qhov feem ntau cov lus qhia yuav tsis qhia koj: tus nqi tiag tiag tsis yog qhov module nws tus kheej.

Cable infrastructure noj nyiaj txiag ciaj sia. Yog tias koj lub tsev khiav legacy OM1 lossis OM2 fiber ntau, koj tab tom saib ntawm qhov kev nplua bandwidth (tseem ceeb txo qis) lossis ua tiav qhov project recabling. Kuv tau pom ib nrab ntawm -cov lag luam loj siv $ 180,000 ntawm kev kho fiber ntau ib leeg, thaum qhov tseeb SFP + kho qhov muag modules tag nrho tej zaum $ 12,000. Yog li thaum ib tug neeg pitches "pheej yig transceivers" raws li tus nqi-txuag lub tswv yim, coj qhov uas tsim nyog skepticism.

Qhov ntawd tau hais tias, cov koom haum khiav haujlwm ntawm thaj chaw ntsuab lossis cov uas muaj OM3 / OM4 cov nroj tsuag tam sim no paub txog kev txuag nyiaj tiag. Cov10G SFP + transceiverqhov ntom ntom-48 qhov chaw nres nkoj ib 1RU hloov tam sim no yog tus qauv- txhais kom txo qhov chaw khib thiab qhov yuav tsum tau ua kom txias. Kev siv hluav taws xob hovers nyob ib ncig ntawm 1W rau ib qho module rau luv-mus txog variants, uas ntxiv thaum koj nyob ntau pua ntawm cov chaw nres nkoj.

 

Hom Fiber thiab Cov Lus Nug Nres

 

 

 

Lub LRM (Long Reach Multimode) module nyob hauv qhov chaw nruab nrab txawv. Nws tau tsim los cawm cov cuab yeej cuab tam OM1 / OM2 kev teeb tsa, txhawb nqa 220m ncav cuag cov khoom qub fiber ntau. Uptake tsis sov vim tias los ntawm lub sijhawm cov tuam txhab xav tau 10G bandwidth, ntau tus twb tau hloov kho lawv cov cabling cog lawm. Tseem muaj txiaj ntsig hauv qee qhov xwm txheej retrofit, tshwj xeeb yog cov chaw kho mob nrog cov txheej txheem qub txeeg qub teg.

 

Dab tsi Tiag Tiag hauv Kev Tsim Khoom

 

Kub. Ib txwm kub.

A 10 gigabit transceiverntsuas rau kev lag luam kub ntau (0℃txog 70 degree) yuav tawm tsam hauv qhov tsis zoo IDF txee dai khaub ncaws thaum lub caij ntuj sov. Kuv tus kheej tau teeb meem cuam tshuam qhov sib txuas sib txuas flaps taug qab mus rau modules tshaj qhov ntsuas cua sov los ntawm mere degrees. Digital Optical Monitoring (DOM) muaj nyob rau vim li cas no- txhua qhov SFP + module niaj hnub no yuav tsum nthuav tawm tiag tiag-lub sijhawm kub, TX/RX fais fab theem, laser bias tam sim no, thiab muab hluav taws xob los ntawm SFF-8472 interface.

DOM cov ntaub ntawv tsis yog kuaj xwb. Nws yog kwv yees. Thaum TX fais fab pib drifting mus rau qhov tsawg kawg nkaus spec txwv, koj tab tom saib lub laser tuag nyob rau hauv qeeb qeeb. Kev hloov pauv hloov tau nrawm nrawm thaum hmo ntuj shipping txhua lub sijhawm. Qee lub vev xaib tswj hwm lub network tseem yuav hloov cov txiaj ntsig no thiab tsim cov ntawv ceeb toom ua ntej qhov tsis ua tiav tiag tiag - tsim nyog yog tias koj pawg saib xyuas txhawb nqa nws.

Dirty connectors qeb thib ob. Microscopic contamination ntawm LC ferrules ua rau tsis muaj qhov cuam tshuam uas degrades txuas cov npoo. Ib qho $15 fiber ntau tu cov khoom tiv thaiv kev tawm tsam ntau dua li cov khoom siv rov ua dua tshiab. Tsis glamorous, tab sis muaj tseeb.

 

 

Thib peb-Party Module Debate

 

Cia peb hais qhov no ncaj qha: thib peb- togSFP + optical modulesua haujlwm. Lawv ua haujlwm vim tias Multi- Daim Ntawv Pom Zoo Pom Zoo ua qauv siv hluav taws xob sib cuam tshuam, cov qauv tsim, thiab cov txheej txheem tswj hwm. Ib qho qauv ua raws li MSA specs yuav lub cev thiab hluav taws xob ua haujlwm hauv txhua qhov chaw nres nkoj host.

Qhov twg nws tau nyuaj yog tus neeg muag khoom xauv. Cisco siv "Quality ID" xyuas qhov twg qhov hloov pauv nyeem cov module's EEPROM thiab sib piv tus neeg muag khoom cov lis dej num tiv thaiv daim ntawv pom zoo. Tsis yog-Cisco modules tuaj yeem ua haujlwm tab sis tsim cov lus ceeb toom- lossis hauv qee qhov firmware versions, tsis kam pib tag nrho. Workarounds muaj (tsis muaj kev txhawb nqa transceiver commands, EEPROM reprogramming) tab sis qhia txog kev txhawb nqa daim ntawv cog lus tsis meej.

Kuv cov lus qhia siv tau: siv cov thib peb - tog modules nyob rau hauv kev loj hlob ib puag ncig, lab infrastructure, thiab tsis yog - txoj kev tseem ceeb. Khaws OEM modules rau kev sib txuas ntawm cov nqaj qaum thiab txhua yam uas cuam tshuam kev ua raws li - cov tsheb khiav ceev. Tus nqi delta tsis tshua pom tseeb qhov kev txhawb nqa mob taub hau thaum muaj ib yam dab tsi tsis ncaj ncees lawm ntawm 2 AM thiab TAC engineer nug dab tsi modules koj tab tom khiav.

 

Tooj tsis ploj

 

10GBASE-T SFP + modules muab RJ-45 kev sib txuas muaj nyob, txawm tias lawv tuaj nrog cov lus ceeb toom. Kev siv hluav taws xob khiav ntau dua-2.5W piv rau 1W rau fiber ntau variants-vim tsav tsheb 10 Gigabit tshaj twisted khub yuav tsum loj DSP horsepower. Thaum tshav kub kub dissipation ua teeb meem nyob rau hauv ntom deployments.

Mus cuag cov kev txwv kuj siv tau. Cat6A ua tiav 100m ntawm 10G, tab sis Cat6 sab saum toj ntawm 55m, thiab Cat5e yuav tsis ua haujlwm txhua. Cov modules txhawb kev sib tham autonegotiation mus rau 1G thiab 100M rau cov cuab yeej cuab tam kev sib raug zoo, uas ua pov thawj muaj txiaj ntsig zoo rau cov chav tsev neeg rau zaub mov sib xyaw tshiab 10G NICs nrog cov khoom qub. Tsis txhob cia siab tias 48 tooj liab10G fiber ntau modulesqhov sib npaug sib npaug- cov kev txwv cua sov yuam kom qis chaw nres nkoj suav lossis ua kom txias.

 

BiDi thiab WDM Variants

 

Bidirectional modules xa thiab tau txais ntawm cov wavelengths cais hla ib leeg fiber ntau. Koj ua khub ib qho khoom siv hluav taws xob (TX 1270nm / RX 1330nm) nrog cov nqes qis (TX 1330nm / RX 1270nm) ntawm qhov sib txawv. Ib nrab ntawm koj cov fiber ntau suav, uas tseem ceeb heev rau kev xauj qhov tsaus nti fiber ntau qhov twg koj tau them ib txoj hlua ib mais.

CWDM thiab DWDM SFP + modules thawb qhov no ntxiv -multiplexing ntau 10G raws hla ib khub fiber ntau. CWDM siv qhov dav dav dav dav (20nm) tso cai rau 18 wavelengths; DWDM ntim cov channel nruj dua rau qhov ceev dua. Kev lag luam tsuas yog ua rau kev txiav txim siab ntawm qhov ntsuas, feem ntau cov chaw muab kev pab cuam ib puag ncig lossis cov koom haum nrog cov chaw loj metro fiber ntau cog. Kev saws ua lag luam tseem txwv rau qee qhov kev siv WAN sib sau ua ke.

 

 

Deployment Realities rau Network Teams

 

Cov kev qhia tshwj xeeb tseem ceeb tsawg dua li kev qhuab qhia ua haujlwm. Sau koj cov kab. Document koj cov fiber ntau khiav. Kuaj txhua qhov txuas nrog OTDR ua ntej ua haujlwm yog tias koj khiav ib yam dab tsi tshaj 100 meters. Cov kev coj ua no zoo li yooj yim vim tias lawv yog - thiab vim tias kev ua txhaum cai ua rau feem ntau ntawm cov teeb meem xa tawm kuv ntsib hauv kev sab laj ua haujlwm.

Firmware deserves saib thiab. Hloov platforms qee zaus qhia cov kab mob transceiver hauv cov ntsiab lus tso tawm. Kev khiav cov cai tshiab tsis yog ib txwm ua tau zoo-qee zaum tus paub tab, cov ntaub ntawv pov thawj lub tsheb ciav hlau muab kev ruaj ntseg ntau dua li los ntshav- ntug nta. Tshawb xyuas cov neeg muag khoom tso tawm cov ntawv tshwj xeeb rau kev hloov pauv hloov pauv hloov ua ntej hloov kho dua tshiab.

Tshuag spares tsim nyog. Yog koj khiav 20010G SFP + transceiversthoob plaws koj ib puag ncig, khaws 5-10% raws li cov khoom kub kub tsis muaj kev ntxhov siab- nws yog kev ua haujlwm kom loj hlob. Lub sijhawm nruab nrab ntawm kev ua tsis tiav rau cov qauv zoo tshaj li 1 lab teev, tab sis cov menyuam mos tuag thaum thawj 90 hnub suav rau feem ntau qhov ua tsis tiav. Hlawv-hauv kev sim ntawm kev xa tawm cov nplai ntes cov no thaum ntxov.

 

Migration Paths Forward

 

Puas yog 10G txaus? Rau feem ntau kev lag luam nkag mus rau txheej xa tawm, kiag li. Kev sib txuas ntawm cov neeg rau zaub mov xav tau ntau dua 25G lossis siab dua, tab sis kev sib sau thiab kev faib tawm feem ntau nyob twj ywm ntawm 10G rau xyoo tom qab pib xa tawm. Covdaim ntawv me me-factor pluggable modulearchitecture ua kom muaj kev txhim kho txoj hauv kev muaj nyob -SFP28 qhov feem ntau lees txais SFP + modules ntawm kev txo qis, tiv thaiv cov khoom muag uas twb muaj lawm thaum hloov pauv.

Tib -mos fiber ntau infrastructure muaj hnub nyoog zoo nkauj. Ib yam SMF cog txhawb 10GBASE-LR hnub no yuav nqa 25G, 40G, lossis 100G tsheb nrog kev hloov pauv hloov pauv tsim nyog. Multimode nthuav tawm cov kev xaiv nyuaj dua-OM3 txhawb nqa 100G nkaus xwb rau 70m siv SR4 optics, thawb ntau lub koom haum mus rau ib qho -hom rau kev teeb tsa tshiab txawm tias tus nqi siab dua.

 

Parting Observations

 

Kaum xyoo mus rau thoob plaws 10GbE xa mus, thev naus laus zis tau loj hlob mus rau hauv cov khoom lag luam. Cov nqi tau poob lawm, kev sib koom ua haujlwm tau zoo dua, thiab cov ntaub ntawv ntug tau zoo -cov ntaub ntawv. Dab tsi tsis tau hloov pauv yog qhov yuav tsum tau muaj rau kev qhuab ntuas network engineering kev coj ua.

A 10G SFP + transceiverThaum kawg tsuas yog ib feem ntawm -ib qho ntawm cov kab ke loj dua suav nrog cov cabling, hloov pauv, tswj platforms, thiab tib neeg cov txheej txheem. Cov koom haum ua tau zoo 10G infrastructure tsis tas yuav cov nqi them nqi; lawv tab tom nqis peev rau hauv cov ntaub ntawv, kev saib xyuas, thiab kev saib xyuas uas tiv thaiv cov teeb meem me me los ntawm kev tawg loj.

Lub tshuab ua haujlwm. Seb koj qhov kev xa mus ua haujlwm yog nyob ntawm seb koj siv nws li cas.