Develop Product Network Design Samples for General Motors.docx

Develop Product Network Design Samples for General Motors.docx

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DevelopProductNetworkDesignSamplesforGeneralMotors

DevelopProductNetworkDesignSamples

TableofContents

Introduction1

Assumptions3

PreliminaryDesigns5

DevelopProductDataCenterEnvironment6

Non-DevelopProductDataCenterEnvironment9

DistributionLayer9

NoDistributionLayer9

VEC/TowerBuilding10

HighlySecuredEnvironment12

DataCenter12

FirewallEnvironment12

Non-HighlySecuredUsers14

BuildingSwitches15

ExternalConnections15

WarrenCampusConnectivity16

DirectConnectionwithoutRouting16

DirectConnectiontotheHSB17

DirectConnectiontoboththeHSBandtheDevelopProductEnvironment17

PowertrainBuilding18

EngineeringBuilding18

MetalFabrication（100KirtsBlvd.）21

Gigamon21

BuildingSwitches22

DevelopProductOverview23

Bandwidth24

Bandwidth/ThroughputfromWorkstationtoServer24

Bandwidth/ThroughputfromServertoWorkstation24

WorkstationIOPS25

Oversubscription25

Diagram25

SwitchInventory27

Core/Distribution27

VEC/Tower27

Engineering27

Powertrain27

HighlySecureNetwork27

MetalFabrication–100KirtsBlvd.28

DataCenter28

Introduction

TheArchitectureforDevelopProductisutilizedasthefoundationforthesedesigns.ThebasicrequirementsoftheArchitectureareasfollow.

-Networkloadsareprojectedtodoubleannually.Thecurrentloadis10-12IOPSperuserinthiscommunity（1IOPS=4KB）.Thedesignmustbeabletoscaleaccordingly.

-Anticipatedstartupdownloadtoeachuserisseveralmegabytesofprogramsanddataandisdownloadedinabriefwindoweachmorning.Thenetworkmustbeabletohandleburstsofthisnature.

-Connectivityforapproximately200GigEserverportsisrequiredbytheendoftheyear.

-Networkmanagementiscritical,especiallyintermsofidentifyingandrectifyingfailures.

-DevelopProductfilesareverylargeandthehumanresourcesutilizingthosefilesareveryvaluable.Theconceptmustprovidemechanismstoensurefastandreliabledeliveryofthesefilesandminimizeany,intendedorunintended,interferenceintheprocess.

-Thenetworkshouldhaveasfewhops,devices,aspossiblebetweenserverandend-user.Theintentistoreducethecumulativeeffectofpotentialdevicefailure.

-ThedesiredstateistohaveminimizedroutingwithintheDevelopProductenvironment.Theassumptionisthatdirectingtrafficisbesthandledatthelowestlayerpossible.

-Theconceptmustbeconstructedinsuchafashionthatcomponentfailurewilldisplacenomorethan500users.

-ConnectivitymustbeallowedfromDevelopProductintothenormalGMenvironmentforbusinesspurposesandviceversa.

-DevelopProductusersatremotesites,includinginternationalusers,mustbeallowedintotheDevelopProductenvironmentatWarren.

Sampledesignsareincludedforthefollowinglocations

-VECandnewToweruserandDevelopProductserverconnectivity

-DataCenterserverconnectivity

-HighlySecuredenvironmentincludingVEC,EngineeringandDesign

-MetalFabricating,100KirtsBlvd.,remoteconnectivity,and

-PowertrainBuildingnetworkandtwooptionsforconnectivitytoVECDevelopProduct.

Assumptions

TheDesignsamplesarepresentedbaseduponthefollowingassumptions.

-Existingfiberrunswillbeutilizedunlessotherwisespecified.

-RedundantfiberrunswillbemadeinnewconstructionintheVEC/TowerfromtheDataCentertoDistributionclosetsandfromDistributionclosettoAccessclosets.Renovationwillbeconsideredtoextendthisconcepttoexistingbuildingsasitcanbeincorporatedwithadditionalconstruction.

-Existingclosetsandclosetenvironmentswillbeutilizedunlessotherwisenoted.

-Devicestobereplacedwillutilizeexistingfiberconnections.

-AllserverswillbelocatedattheDataCenter.Noserverswillbelocatedinotherbuildings.

-Allnetworkdevicesshouldoperatewithredundantpowersupplies,supervisorcardsand/orroutingcards.Existingequipmentwillbeevaluatedforuserconstituencyandloadingbeforerequiringupgradestofitthepreliminarydesign.

-AllnetworkdeviceswillbeISLcapableandtrunkingwillbeimplementedbetweenthesedeviceswhenLayer2connectivityisimplemented.

-Layer2connectionsbetweenswitchesforDevelopProductwillconsistof2Gbpsfibertrunk/channels.

-Layer2connectionsbetweenswitchesforDevelopProductwillconsistof21Gbpsroutedconnections.

-AllnetworkdeviceswillinterconnectutilizingGigEconnectionsunlessotherwisenoted.

-AllserverswillconnectusingGigEconnections.

-Allworkstationswill,initially,connectusing10/100Mbpsconnections.

PreliminaryDesigns

DevelopProductDataCenterEnvironment

TheDevelopProductDataCenterenvironmentconsistsofthreeCisco6509seriesswitches,eachpopulatedwithdualsupervisorcards,dualpowersupplies,dualMSFCcardsandfive16portGigEcards.TwoslotsareleftopenoneachchassisallowingforsomeGigEexpansionaswellasatleastoneslotrequiredforthefuturebackplanefabricexpansion.Becauseofthenumberofrequiredserverconnections,theinclusionofaDistributionlayerbetweenserversandtheCore/Distributionswitchesisnotrequired.

Eachofthe6509switcheswillconnecttotheHighSpeedBackbone（includedaspartoftheNon-DevelopProductEnvironment）,toserversandtobuildingDistributionlayerswitches.Atthispoint,estimatedGigEconnectionsforeachchassisarelistedbelow.

BuildingDistributionswitches

Tower4（22-fiberchannels）

VEC8（42-fiberchannelsor24-fiberchannels）

Engineering4（22-fiberchannels）

（NotethattheEngineeringconnectionsmaynotbeimplemented）

CoreSwitchConnections4（22-fiberchannels）

HighSpeedBackbone（dual8540’s）4

Servers60

（Note64portsmaybeavailabledependingupontheEngineeringconnection）

Switcheshavebeenconfiguredwiththe16GigEportboard.ThishasbeendonetoreducetherequirementforaDistributionlayerofswitchesbetweentheCoreandtheservers.

Core/Distributionswitcheswillbeinterconnectedusingtrunking/channelinginthefollowingmanner.

TrunkingontheCore/DistributionswitcheswillbeconfiguredtosupportaSpanningTree,HSRPandDNSfunctionimplementationthatwillprovidetheshortestpathfromclientVLANtoprimaryserverVLAN.Thiswillalsoentailplanningthedatasetdistributiononserverstolevelprimaryserverconnectionsacrossasmanyserversasreasonable.

RoutingwillbeperformedattheCore/Distributionlayeronly.RoutedratherthantrunkedconnectionswillbemadefromtheCore/DistributionlayerswitchestotheHighSpeedBackbone（HSB）.ItisanticipatedthatdualconnectionsfromeachoftheCore/DistributionswitcheswillbeimplementedtoeachoftheHSBrouter/switches.Thisisshownbelow.

BecauseoftherelativelyfewnumberofconnectionstheserversaredirectlyattachedtotheCore/Distributionswitches.EachserverisattachedviaoneormoreGigEconnectionstooneormoreswitch.IfthenumberofrequiredserverconnectionsexceedstheaggregateofavailableportsatthecoreaverticallayerofswitcheswillbeaddedbetweentheserversandtheCore/Distributionswitches.ThepurposeofthislayerofswitchesistoconsolidatetrafficsothatportoneveryserverhasaminimumLayer2pathtothecorewithoutrequiringapotentiallylengthyLayer3paththroughthecoreswitches.

TheCore/DistributionswitcheswillattachtoDistributionswitchesthatwillinturnattachtoAccesslayerswitches.TheDistributionlayerswitchesarerequiredbecauseofthenumberofAccesslayerswitchesthatmustbesupported.ThelocalCore/DistributionswitcheswillconnecttotheDistributionlayerviatwotrunked/channeledGigEfiberconnections.TherearethreesetsofDistributionswitchesinthelocalVEC/Towerbuilding.Assumingthata4Gbpschannelwillprovidedoublethethroughputthen40+AccessswitchescouldbesupportedonasingleDistributionlayerswitchusinga4fiberruntoeachCore/Distributionswitchinsteadofthe2fiberrun.Oversubscriptionoftheswitchbecomesaconcernthen.Distributionlayerswitches,thatareinremotebuildingssuchasEngineeringandattachtotheHSB,willroutetoeachCore/Distributionswitchviatwofibers.Thisisdescribedthesectioncalled“RemoteBuildingConnectivity”.

HSRPwillbedesignedandimplementedontheCore/Distributionswitchestosupportworkstationdefaultgatewayfunctions.UntilaDistributionlayerisrequiredbetweenserversandtheCore/Distributionlayer,itisrecommendedthatanyredundantserverlinksbeattachedtothesameswitchastheprimary.InthiscaseHSRPisnotrequiredtosupportIPsubnetsonservers.ShouldanentireCore/Distributionswitchfailresultinginthelossofserversubnets,DNSfunctionswillberequiredfortheworkstationtoselectanotherIPsubnettoconnecttotheserver.

Non-DevelopProductDataCenterEnvironment

Thisenvironmentiscomposedoftwopieces–theconsolidatedserverenvironmentandtheHSB.TheHSBisrepresentedattwolocationsontheWarrencampus.Onesiteisat7000ChicagoandtheotherisintheDataCenter.TheprimarydifferencebetweenthetwoisthattheDataCenterisalsothelocationforconsolidationofserversfortheregion.InmanywaysthissitestronglyresemblestheCore/DistributionlayerforDevelopProduct.ThenumberofserverconnectionsisjustattheedgeofrequiringafullDistributionlayerbetweentheserversandtheHSB.Forthatreason,twooptionsaredescribedfortheDataCenter

DistributionLayer

ThisoptionimplementsaDistributionlayerofthree6509switches,withoutMSFCbutfullyredundantotherwise,betweenserversandtheroutingdevicesrepresentingtheHighSpeedBackbone.Thi