opening up optical networking - glif up optical networking ... •this will lead to both...

Networks·Services·Peoplewww.geant.org

GuyRoberts

SeniorNetworkArchitectGÉANT27Sept2017

OpeningupOpticalNetworkingTIPandmerchantoptics


• OpenLineSystemsandDCIequipment• TelecomInfraProject• TIPopticalsimulationsoftware- OLE• DCIequipmentevaluationandfieldtrials• NetworkdesignusingDCI

2

Overview


Contentprovidersareexperiencinghugegrowthintrafficvolume.Theyaredrivinginnovationtoensurethattheirbusinessmodelsscale.

• Theneedforsimplecentralizedcontrollersisdrivingsoftwareandhardwaredisaggregation.

• StartedwithOpenFlow,nowcontentprovidersarepushingdisruptionthroughmechanismssuchasTIP,OpenConfig etc.

• Hardwarecommoditisationdriveseconomiesofscale– pizzaboxformfactorfordatacentres.

• ThesechangesarenowmovingfromthedatacentreintotheWideAreaNetwork.

• ThiswillleadtobothopportunitiesandcompetitivepricepressuresonNRENs.

Whatchallenges/opportunitiesarethereforNRENsinthesechanges?

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Contentprovidersdrivingdisruption


R&ENetworkeconomics- costofdeliveringdata

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• GÉANTfundsspentonbuildingournetworkhavefallensince2013.• AnnualisedcostofGÉANTnetworkexcludingmanpowernow€16.6M.• TotalGÉANTnetworktrafficincreasefrom250to400Gbps from2015to2016.• FallingpriceofcommercialInternet…weneedkeepuporloseout.Weneednewsolutionstokeepdeliveringrapidtrafficgrowthwithnoextrarevenue


• TraditionallyDWDMopticalinterfacesresideontheopticalequipmentvendorstransponders

• ThenewgenerationofDWDMinterfacesarebeingintegratedinmanyplaces:• DWDMDP-QPSK/8QAM/16QAM• 2500kmreachinCFP2package• 4000kmreachinforAC400

• WhereisoptimallocationforCFP2?• Juniper/Ciscowouldliketosell100GDWDMontheirrouters• HeavyreadingwhitepaperFeb2017suggeststhatexternaltransponders/muxponders arecheaperduetocheapQSFP100GinterfacesandhighercostofusingDWDMonroutersconsumingvaluablerouterslots.

• IntegrationofDWDMintoroutersblurslayerindependenceandHeavyReadingclaimsthatbigcontentprovidersareoptingtokeepDWDMofftheirrouters.

DCIsolutionbringsgainsoflowcostDWDMwhilemaintaininglayerseparation

MerchantOptics

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AlienWaves

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• Alienwavesallowtranspondersfrommultiplevendorstooperateonasinglelinesystem.• Integrated3rdpartyDWDMpluggables availableinvariousterminaltechnologiesandvendors.• Stillbenefitfromasinglevendorprovidingend-to-endopticalmanagement:Channel&spanequalization,DCNconnectivity(OSC),ALS,Alarmreporting.

OpenLineSystem

ILAROADM ROADMILA


• Nextgenofcommoditypluggableopticshas excellent performance• Datacentrestyle1RUstackableformfactor.• Upto6timesreductionincostovertraditionaltelecomsequipmentarchitectures

• Significantincreaseindensity andreductioninpowerconsumption• Modular– easytoscaleup• Easyupgradepathtonewtechnology

DataCentreInterconnects

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• Lossofequipmentintegrity– notdesignedtobehighlyavailableasperETSIetc.• Nointernalhardwareredundancy• Noin-serviceupgrades• Restrictedtemperatureoperation

Networks·Services·Peoplewww.geant.org 8

TelecomInfraProject


• Facebookhasinitiatedthe TelecomInfraProject whichaimstoachieveopenmarketfornetworkingequipment.

• Builtaroundcomponents:APIs,lineequipment,subsystems,software.

• Operatorsaretheleaders,viathe'OperatorCouncil'(OC).

• Thesub-projectrelevanttoopticaltransmissionisOpenOpticalPacketTransport(OOPT)

• Facebookbelievesthatthedaysofthebigcarriergraderouterareover. Thenewarchitecturewillbestackableboxesandcoderstoreplacehardwareredundancy.

• TIPalsoplanstodevelopphotonicsimulationenvironmenttospeedupthedevelopment.

TelecomInfraProject

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Voyagerhardware

12 QSFP28 PortsBMC Console

System LEDs

Reset Button

OOB Management USB 2.0, Type A

4 Optical Ports

Debug Connector

• 12portsof100GQSFP28• 4 portsDWDMAcaciaAC400modulatedat

QPSK/8QAM/16QAM• 2xBroadcomTomahawkchipsetsof400Geach• Snaproute softwareforL2enterpriseswitching


TIPOpenLinkEmulator(OLE)simulationtool

• TheOpenLinkEmulator(OLE)emulatesapoint-to-pointlinkwithinanetwork.• simulatesfiberattenuationandNLI• AmplifiergainandASEnoise• Passivecomponentslosses

• Theopticallinkemulator(OLE)basedongithubgaussiannoise(GNPY).

• TargetOSNRaccuracy1dB.

• Phase1pythoncodeavailablenowingithubfortesting.Nextcodeversionlate2017.

Phase1availablenow Phase2end2017


Phase1• Distanceupto1500kmwithout3Rregeneration• Linearstructurewith5ROADMtotraverse(+2terminalAWG)• G.652xor G.655fibertype• Anyvariationofspanlength40-120km• EDFAamplifier

Phase2• AddutilitiestointerfacewithcodeoutsideTIPtoprovideGUIsupport• Improvesimulationcapabilities:RAMAN,optimumpowersettings• ImproveNetworkmodelingcapabilities

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OLEphase1and2


Inputparameters

• Fibreattn.,length,alpha,beta,effectivearea• Amplifiergain,tiltandnoisefigure

• Opticalsignal

Outputparameters

• Opticalsignaltonoiseratio(OSNR)bothlinearandnon-linear

• Opticalnoise(ASE)

• NLINonlinearinterference• PhotonicSpectralDensity(PSD)

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OLEparameters


• Essentialasaplanningtooltounderstandhowaddingnewwaveswillaffectexistingwavelengths.

• Vendorsprovideopticalmodellingtoolsbutthesearesinglevendoronly.TIPaimstomakemulti-vendoroperationeasywithasharedsimulationtool.

• Modellingtoolsareoftenexpensive.Morethan100,000Euros.

• Scalingupalienwavesrequiresareliablepredictionofperformanceofnewwavelengths.

• WhenROADMsareusedOSNRpredictionsareneededtoallowrestorationdecisiontobemadeon-the-go.

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Whyismodellingtoolimportant?


GÉANTtesting

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DCIequipmenttestinginGÉANT

Optics FirstVendor SecondVendor

AcaciaAC400 Equipment:FacebookVoyagerStatus: Cambridgelabtestingcomplete

GÉANTfieldtrialLon-Bru completeNREN evaluationbyPSNCandUNINETTongoing

Equipment:ADVAFSP3000Status: Testingunderconsideration.

AcaciaCFP2 ACO Equipment:JuniperDWDMCFP2100GACOStatus: Cambridgelabtestingcomplete

GÉANTfieldtrialMil-Marcomplete

Equipment:CoriantGrooveG30Status: LabtestinginCambridgecomplete

AcaciaCFP2DCO Equipment:VendorinDWDMstealthmodeStatus: GÉANTfield trialonMil-Marcomplete

Equipment:JuniperDWDMCFP2100GDCOStatus: Testingexpected late2017

InfineraPIC Equipment:InfineraXT3300/XT3600Status: EvaluationinInfinera labinQ42017.

NA

Ciena WaveServer Equipment:WaveServer AIStatus: Cambridgelabtestingongoing

Fieldtrialplannedon CESNETfibrefromPraguetoViennainQ42017

NA

GÉANTistestingDCIboxesfromseveralvendors.InadditiontestsarebeingcarriedoutincollaborationwithNRENsthrough JRA1T1Astheseareeffectivelytranspondersinadatacentreform-factorthesehavebeengroupedbylinesideopticstypes.


• InfinerafixedfiltersareoffsetfromITU-Tgrid

• -12.5GHz

• RequiresDCItotuneoffgrid• ThisissupportedbyAcaciapluggables

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InfineraDTN-Xfixedfilters

8

8.2

8.4

8.6

8.8

9

9.2

9.4

9.6

9.8

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-20000 -18000 -16000 -14000 -12000 -10000 -8000 -6000 -4000 -2000 0

Q-factorvs.frequencyoffset(16QAM)


VoyagerTx powervspre-FECBER(Labtest)

Labtestresults

• Testedover100kmoffibrelitwithInfineraDTN-X

• Infinera’s fixedfilterscentrefrequencyisoffsetfromtheITU-Tgridby12.5GHz

• Togetoptimalperformancewavelengthneedstobede-tuned

• ForQP-DPSKthesystemcanworkwithoutde-tuning,butseveraldBofperformancepenalty.


CORIANTGroove(labtest)maximumpre-FECBERvsTx outputpower

*TestsbyKarimBoudjemaa


16QAM

8QAM

QPSK

AllGÉANTfibreroutes– modulationschemeavailable

• Ofthe21fibreroutesinGÉANT,wecanexpectthatmostwillworkwith8QAMmodulation.

• Only1routewillrequireDP-QPSK

• Atleast2routeswillworkwith16QAMmodulation


VoyagerfieldtrialonLON01toBRU


Whathavewelearntfromthetesting/evaluationsofar?

• Potentialforverylargecostsavingsinthenetwork.

• InfinerafixedfiltersrequiretuningfrequencyofftheITU-Tgrid– thisispossiblewithAcaciahardware.

• PerformanceoflatestgenerationofDWDMpluggables isverygood – Voyager8QAMwillworkonmost(all?)linksinGÉANTnetworkand16QAMonseveral.

• Opticalpowermanagementisthekey.

• Softwareselectablemodulationmakesplanningmucheasier.

• AnopticalmodellingisneededtoscaleupnumberofAWs.

• Turningupalienwavesisbestdonecarefully!

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AWFieldTrials/Labconclusions


NetworkdesignwithDCIs

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AcostcomparisonDCIvInfineraDTNx

100G 200G 300G 400G 500G 600G 700G 800G 900G 1T 1.1T 1.2T 1.3T 1.4T 1.5T

HWcostofdeliveringcapacitybetweenadjacentPoPsoverafibrelink

DCI1 DCI2

*AnalysisbySebastianoBuscaglioneandMatthewGordon,August2017


• In2013GÉANTranthePRISMcompetitionforNordunet.

• Fourtransmissionvendorsweresuccessful:Infinera,Ciena,Alcatel-Lucent(nowNokia)andCoriant.

• ThisframeworkagreementisstillactiveandallowsallGÉANTNRENstopurchaseDWDMequipmentatthePRISMprices.

• ThisisnowbeingrefreshedbythevendorstoaddtheirDCIoffering.

• GÉANTplanstorunamini-competitionbetweenPRISMvendorstochooseaDCIboxtoupgradetheGÉANTnetwork.

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PRISM


DCIdeploymentinGÉANTin2018


• Newgenerationofdata-centretypetransponderswilldelivertheperformanceGÉANTneedsoverourexistingInfineralinesystem.

• TestinghasconfirmedseveralDCIboxesonthemarketwithexcellentpricingcf.traditionalDWDMvendors.

• TIPpromisestofillthemissingmulti-vendorsoftwaremodelling- requiredtoscaleupopenopticalnetwork.

• GÉANTwillpurchaseDCIequipmentasaninterimtechnologyfortranspondersbetweennowandthenetworkrefreshin2020/21

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Summary


Thankyou


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[email protected]

opening up optical networking - glif up optical networking ... •this will lead to both...

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