Qhov zoo tshaj plaws 2.5G SFP Modules rau Network Hloov Kho

 

Vim li cas 2.5G muaj nyob ntawm txhua qhov

 

Nov yog qhov uas tsis muaj leej twg hais txog ntawm kev lag luam qhia: feem ntau Cat5e cabling uas twb muaj lawm tuaj yeem tuav 2.5 gigabits ib ob yam tsis muaj hws. IEEE 802.3bz tus qauv los ntawm 2016 pib ua raws li cov engineers twb xav tias-peb tau siv tsis tau peb cov khoom siv tooj liab rau ntau xyoo.

Kev dhia ntawm 1G mus rau 10G suab zoo nkauj ntawm daim ntawv. Hauv kev xyaum? Koj feem ntau saib txog kev hloov cov cable tiav, hloov kho tshiab, thiab kev sib tham txog nyiaj txiag tsis muaj leej twg xav kom muaj . 2.5G sidesteps tag nrho cov ntawd. Tib kab. Feem ntau tib lub keyboards (yog tias lawv muaj SFP + chaw nres nkoj). Tsuas yog pauv cov modules.

Kuv tau pom kev xa tawm qhov twg tag nrho cov nqi hloov tshiab tuaj nyob rau hauv qis dua $ 200 rau ib lub chaw ua haujlwm me. Sim nws nrog 10G.

 

Module Hom Tsim nyog xav txog

 

Tooj liab RJ45 variantstswj hwm 2.5G SFP kev ua lag luam rau cov laj thawj pom tseeb- lawv txuas ncaj qha rau hauv cov kev lag luam uas twb muaj lawm. Lub physics ntawm no tseem ceeb tshaj li cov neeg muag khoom lees paub. Ntawm 2.5 Gbps, koj tuaj yeem thawb cov cim 50 metres ntseeg tau ntawm Cat5e zoo. Thawb qhov ntawd rau 10G ntawm tib lub cable? Hmoov zoo tau dhau los 30 meters yam tsis muaj qhov yuam kev.

Fiber xaiv kuj muaj. Feem ntau overkill rau chav kawm ceev no, ua siab ncaj. Yog tias koj twb rub fiber ntau lawm, vim li cas nres ntawm 2.5G? Tab sis rau cov xwm txheej tshwj xeeb- txuas cov tsev nyob thoob plaws qhov chaw nres tsheb, khiav los ntawm cov khoom siv hluav taws xob tsis zoo hauv pem teb- kev tiv thaiv hluav taws xob cuam tshuam cuam tshuam rau tus nqi ntxiv.

Tib - hom fiber ntau SFPs ntawm qhov ceev no yog cov noog tsawg. Ntau- hom ua haujlwm luv luv ua haujlwm zoo, thiab tsis muaj leej twg khiav 2.5G thoob plaws hauv tsev kawm ntawv nyob qhov twg ib qho - hom ci.

 

 

Npau suav phem Compatibility

 

Qhov no yog qhov uas ua dab tsi.

Cisco kaw lawv cov keyboards. Zoo li HPE, txawm tias lawv tsis tshua muaj kev txhoj puab heev txog nws. Juniper sib txawv ntawm cov khoom kab. Koj yuav pom cov lus yuam kev hais txog "tsis muaj kev txhawb nqa transceiver" thiab xav paub tias koj ua dab tsi tsis ncaj ncees lawm. Lo lus teb: tsis muaj dab tsi. Tus neeg muag khoom tsuas yog xav kom koj yuav lawv 300moduleinsteadofthe300moduleinsteadofthe25 lwm txoj.

MikroTik cov neeg siv tau yooj yim dua -RouterOS v7.3 thaum kawg tau ntxiv 2.5G txuas tus nqi txhawb nqa. Ua ntej ntawd, modules yuav txuas tab sis tshaj tawm tsis raug ceev, tsis meej pem cov kev soj ntsuam xyuas thiab qee zaus ua rau muaj teeb meem tswj kev khiav dej num uas tshwm sim raws li cov pob ntawv poob qis hauv kev thauj khoom.

Lub ntxiab tiag? SFP piv rau SFP + chaw nres nkoj tus cwj pwm. Lo rau 2.5G module rau hauv tus qauv SFP chaw nres nkoj thiab nws yuav ua haujlwm, yuav kaw rau 1G, yuav tsis kam txuas tag nrho. SFP + specification technically npog cov nqi ntawm 1G txog 10G, tab sis "technically" ua ntau hnyav nqa hauv kab lus. Tus kheej hloov ASICs siv kev sib tham ceev sib txawv. Qee tus yuav zoo siab pib- sib tham 2.5G. Lwm tus yuav tsis paub dab tsi ntawm 1G thiab 10G raws li siv tau.

Kuv tus kheej tau saib zoo tib yam modules coj txawv ntawm ob lub keyboards los ntawm tib lub chaw tsim khoom, tib qauv, sib txawv firmware versions.

 

Brands Ua Tau Ua Haujlwm

 

FS.comkhwv tau lawv lub koob npe nrov. Lawv cov ntaub ntawv sib raug zoo tsis yog tsuas yog kev lag luam fluff xwb - lawv sim ua ke thiab tshaj tawm cov txiaj ntsig. Xaiv koj tus qauv hloov pauv thaum lub sij hawm them nyiaj, tau txais ib qho kev pab cuam rau tus neeg muag khoom tshwj xeeb cov kev txheeb xyuas kev sib raug zoo. Tsis zoo tag nrho, tab sis qhov txawv txav zoo dua li kev twv txiaj ntawm Amazon.

10 Gteksiv Marvell AQR113C chipsets hauv lawv cov multi-gig tooj liab modules. Qhov ntawd tseem ceeb vim tias AQR113C ua haujlwm 100M / 1G / 2.5G / 5G / 10G auto-kev sib tham kom raug. Lwm cov chipsets{11}}tshwj xeeb yog qee qhov Broadcom tsim- tawm tsam nrog kev nrawm nruab nrab. Lub module tuaj yeem tsim qhov txuas 2.5G tab sis tshaj tawm 10G rau qhov hloov pauv, ua rau tsis muaj kev faib tawm tsis sib xws uas rhuav tshem cov khoom siv.

MikroTik's S+RJ10tus nqi ntau dua -txoj kev xaiv thib peb. Tsim nyog nws yog tias koj tab tom khiav MikroTik infrastructure. Kev sib raug zoo hauv haiv neeg txhais tau hais tias kev tshaj tawm DDM kom raug, tshawb pom qhov tseeb, thiab kev txhawb nqa uas yuav tsis xaus qhov kev sib tham ntawm "sim ib qho kev sib txawv."

Cov khoom dawb -label khoom ntawm Amazon-ipolex, H!Fiber, Cable Matters- ua haujlwm zoo txog 80% ntawm lub sijhawm. Lwm 20% yuav kom koj rub cov plaub hau tawm debugging phantom teeb meem. Koj hu rau seb puas txuag $ 20 rau ib qho module qhia txog lub sijhawm daws teeb meem.

 

 

Installation Reality Check

 

Kev siv hluav taws xob tau raug saib xyuas kom txog thaum koj qhov hloov pauv tsis tau tswj tau pib thermal throttling. Copper SFP modules khiav ntawm 2.5G rub 2.5 txog 3.5 watts txhua. Tsis zoo li ntau. Muab plaub ntawm lawv nyob rau hauv ib lub me me hloov pauv yam tsis muaj qhov txias txias thiab saib qhov kub thiab txias nce.

DDM-Digital Diagnostic Monitoring- cais cov kws tshaj lij modules los ntawm cov khib nyiab. Lub peev xwm los nug tiag -lub sij hawm kub, muab hluav taws xob, TX/RX fais fab theem, thiab laser bias tam sim no txhais tau tias koj tuaj yeem pom cov modules degrading ua ntej lawv ua tsis tiav. Pheej yig modules tsis muaj DDM nkaus lossis tshaj tawm cov nqi khib nyiab. Tsis pab thaum ib yam dab tsi tawg thaum 2 teev sawv ntxov.

Kev ntsuas kub tau faib ua lag luam (0-70 degree) thiab kev lag luam (-40-85℃). Tshwj tsis yog tias koj tab tom txhim kho cov cuab yeej hauv lub tsev khaws khoom tsis muaj cua sov lossis cov khoom siv sab nraum zoov, qib kev lag luam ua haujlwm zoo hauv ntiaj teb. Kev lag luam-qib tus nqi feem ntau yog 3-4x siab dua.

 

Kev siv tswv yim

 

NAS kev ua tau zoo tau txais txiaj ntsig tam sim. Ib qho Synology lossis QNAP nrog 2.5G SFP module pub rau kev hloov kho kom raug tshem tawm cov gigabit bottleneck uas ua rau cov ntaub ntawv loj heev. Kev nyeem ntawv / sau nrawm dua ob lossis zoo dua. Random I / O nyob ntawm ntau dua ntawm disk subsystem dua li lub network, tab sis kev hloov pauv hloov tau zoo dua sai dua.

WiFi 6 cov ntsiab lus nkag tau nce nkoj nrog 2.5G uplink ports. Ua rau kev nkag siab-ntau tus neeg siv khoom ntawm WiFi 6 AP tuaj yeem yooj yim saturate gigabit backhaul. Lub 2.5G uplink tiv thaiv sab wireless los ntawm tos ntawm sab xaim.

Google Fiber's 2 Gbps tier xav tau cov cuab yeej muaj peev xwm sib tham saum toj 1G. Lawv ONT tso tawm ntawm SFP, thiab koj xav tau ib qho module / router ua ke uas ua tiav 2.5G txuas nrawm. Ntau tus neeg siv pom lawv cov router zoo nkauj "SFP+ chaw nres nkoj" yuav tsis sib tham 2.5G nrog Google cov txheej txheem.

 

Kev Xeem Methodology Qhov Tseem Ceeb

 

Bidirectional xeem catches teeb meem unidirectional benchmarks nco. Kuv tau pom modules xa tag nrho 2.5 Gbps nyob rau hauv ib qho kev taw qhia thaum txoj kev rov qab chokes ntawm 100 Mbps. FS.com modules tau nthuav tawm tus cwj pwm no. Yog li muaj 10 Gtek units. Qhov teeb meem taug qab mus rau autonegotiation asymmetry-ib kawg xav tias qhov txuas yog 2.5G, lwm qhov tau txiav txim siab qis dua.

Khiav iperf3 ob txoj kev. Tsis ua ntu zus-ib txhij. Tus chij -R rau hom rov qab tsis txaus. Koj xav tau kev ntxhov siab bidirectional kom nthuav tawm cov kev tswj xyuas tsis ua haujlwm uas tsuas yog tshwm sim hauv qab - duplex load.

Tshawb xyuas qhov ua tiav qhov nrawm tiv thaiv chaw nres nkoj txheeb cais. Ib qhov txuas qhia txog 2.5 Gbps hauv qhov hloov pauv hloov pauv yuav tsum xa kwv yees li 2.35 Gbps tiag tiag los ntawm kev suav nyiaj rau cov txheej txheem nyiaj siv ua haujlwm. Yog tias koj pom 1.8 Gbps ntawm "2.5G txuas," ib yam dab tsi tsis ncaj ncees lawm nrog autonegotiation, cable zoo, lossis module programming.

 

 

Yuav Ua Li Cas Tam Sim No

Zam txhua yam yam tsis muaj cov ntaub ntawv qhia meej txog chipset. "2.5G SFP" ntawm Amazon yam tsis muaj qhov tshwj xeeb txhais tau hais tias kev twv txiaj ntawm txhua pawg neeg muag khoom tau txais lub lim tiam no.

 

2.5G SFP kev ua lag luam tseem tsis paub txawm tias tus qauv uas twb muaj lawm rau ze li ntawm kaum xyoo. Module zoo sib txawv wildly. Tus neeg muag khoom xauv- nyob rau hauv tsis tu ncua. Cov ntaub ntawv muaj nyob ntawm ntau yam mus rau qhov tsis muaj. Tab sis rau kev kho dua tshiab cov tes hauj lwm daig ntawm gigabit ceev yam tsis muaj kev hloov pauv cov khoom lag luam, cov qauv no sawv cev rau kev xaiv pragmatic-xav tias koj txheeb xyuas kev sib raug zoo ua ntej xaj thiab kuaj kom zoo tom qab kev teeb tsa.