GÉANT Network challenges - GLIF · 2017-10-11 · Networks · Services · People GÉANT Network challenges Guy Roberts, Senior Network Architect, GÉANT 26 Sept 2017

Networks·Services·Peoplewww.geant.org

GÉANTNetworkchallenges

GuyRoberts,SeniorNetworkArchitect,GÉANT

26Sept2017

Networks·Services·Peoplewww.geant.org

• Reducecostofprovisioningcapacityontransmissionlayer

• Addressscalability/costonIP/MPLSlayer

• Synchroniseshort/mediumtermstrategywithlongerterm(postlinesystemprocurement)

• Increasemodularity– addressvendorlocking

• Optimisearchitecturetotakemaximumadvantageofrecentdisruptivetrends

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NextgenGÉANTNetworkstrategy- guidingprinciples

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Recentdisruptivetrends

• DCIboxeswithcoherentDWDM

• Openlinesystems/Alienwaves

• Merchantsiliconpacketswitching(e.g BroadcomJerichoII)

• DWDMCommoditypluggables

• Trendtowardspacketopticalintegration

• Disaggregation(softwareandhardware)

Networks·Services·Peoplewww.geant.org

• Nextgenofcommoditypluggableopticshas excellent performance• Datacentrestyle1RUstackableformfactor.• Upto6timesreductionincostovertraditionaltelecomsequipmentarchitectures

• Significantincreaseindensity andreductioninpowerconsumption• Modular– easytoscaleup• Easyupgradepathtonewtechnology

DataCentreInterconnects

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

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Reducecostofprovisioningcapacityontransmissionlayer– costcomparison

Costofprovisioningcapacityfromclienttoclientin100sofGbps viaDCIvsInfinera DTNxs – mostandleastexpensiveDCIsolutionscostsareshown– upto90%cheaperbandwidthusingCoriant solutionvsDTNx

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HWcostofdeliveringcapacitybetweenadjacentPoPsoverafibrelink

DCI1 DCI2

AnalysisbyMatthewGordon

Networks·Services·Peoplewww.geant.org 6

Reducecostofprovisioningcapacityontransmissionlayer– DCIcostscomparison

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CostcomparisonDCIswith16QAM

HighvariationincostbetweenDCIsolutions

AnalysisbyMatthewGordon

Networks·Services·Peoplewww.geant.org 7

CurrentGÉANTcostpainpoints

Problemswithcurrentarchitecture:

• OTNlayerexpensive

• DTNx chassisrunningoutofslotsincentralPoPs

• OTNusefulforprotectionswitchingandmultihop buttrafficis70%unprotectedandnexthop

• OTNchassisareDCpoweredfullrackwhileDCIareACpowered1RU

• ProliferationofIP/MPLS

SlidebySebastianoBuscaglione

Networks·Services·Peoplewww.geant.org 8

GÉANTtransmission:Interimsolution

Solution

• UseDCItoprovisionbandwidthforhighcapacityIP/MPLStrunks

• DCIsareupto6xcheaperthanDTNx

• KeepDTNx forlinkmanagementandlambdaprovisioninggreatlysimplifyingDCIroleandminimisingrisk

• IntegrationofDCIallowsforgrowthoffsetandgenerateenoughsparestoallowtoceasespendingonDTNxplatform

SlidebySebastianoBuscaglione

Networks·Services·Peoplewww.geant.org

Medium-termsolution:AlienwavesoverOpenLineSystems

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

OpenLineSystem

ILAROADM ROADMILA

Networks·Services·Peoplewww.geant.org

Medium-termsolution:OpenLinesystem.

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• Thisisthecurrentclosedmanagementmodel

• Long-termvision.Butopenstandardsandmanagementnotavailableyet

• Mediumtermsolution.Openaccess,singlemanagementplaneforOLS

Networks·Services·Peoplewww.geant.org 11

Addressscalability/costonIP/MPLSlayer

• MainfocusonshorttermisaddressingMXlinecardsfragmentationbyintroducinghigherdensitycardsincentrallocationandmovinglowerdensitycardstotheperiphery

• MX480/960platformremainsviabletill2020+• VendorsiliconbasedsolutioncomingtothemarketasviablealternativetoJuniper,howeverstill1to2yearsawayforfullL3support

• FlexE inMPC10allowsforlinkbundlingwithbitstriping– addresselephantflows• ShorttermGÉANTtoaddressmaintenancecostsofJuniperMXsbyoptimisingcardsutilisationandpursuingcostreductionstrategywithvendors

• MediumtermGEANTtotest,validateandintegratealternativetoMXs- Prouter,brite box,packetopticalintegration

Networks·Services·Peoplewww.geant.org

Thankyou

Networks·Services·Peoplewww.geant.org

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[email protected]

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Optimisationofcostperbitbydiversifyingdeliverystrategy

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Current Switchthrough OpticalExpress DCI/PE DCI/P DCI/P- PE DCI/P- PEOX

HWcostE

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Solution

Costtodeliver100GbpsClienttoClient1hop

Pushtraffictolowestpossiblelayer