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WhitePaperCitrixSD-WANonAWSUsecasestodeliverstrongerbranchofficeconnectivityTableofcontentsAbstract.
3ChallengescreatedbylegacyWANarchitectures.
3IntroducingCitrixSD-WAN.
3CitrixSD-WANvs.
othersolutions.
4BoostnetworkingcapabilitieswithCitrixSD-WANonAWS.
4Getstarted:TestdriveCitrixSD-WAN.
73Enterprisesarecontinuingtomovemoreandmoreapplicationstothecloudtoachievegreaterspeed,scalability,andcostsavings.
Astheycontinuethisjourney,manyorganizationsneedtorethinknetworkinginordertodeliverconsistent,reliable,andhigh-qualityapplicationexperiencestotheircustomers.
ThiswhitepaperwillexplainhowCitrixSD-WANenablesorganizationstofulfilltheseinitiativesandcomplementthebenefitsofthecloud.
Furthermore,itwillexplorehowtoaugmentthecapabilitiesofCitrixSD-WANbyrunningthesolutiononAmazonWebServices(AWS).
ChallengescreatedbylegacyWANarchitecturesGeographicallydistributedenterprisesareembracingAWStoimproveagility,cost-efficiency,andflexibility.
AWSisanidealchoicefortheseenterprises,inpart,becauseitsglobalfootprintmakesiteasytoprovideITresourcestoworkforcesdistributedaroundtheworldwithhighavailabilityandlowlatency.
However,manyofthesebusinessesarestillusinglegacywideareanetwork(WAN)architecturesthatmakeitdifficulttodeliverenterpriseapplicationsinapredictableandreliablemanner.
TheseWANchallengesariseduetoaninabilityfortechnologieslikeMultiprotocolLabelSwitching(MPLS)tohandletheuptickinbandwidthfromcloud-basedandSoftware-as-a-Service(SaaS)applications,degradingperformanceandcreatinginconsistentcustomerexperiences.
Furthermore,sub-optimalroutingpracticesaddtothischallengeasmanyorganizationsbackhaulapplicationtraffictoacentrallocationforinspectionpurposes,creatingadditionallatencythatcanworsenapplicationperformanceforbranchofficeusers.
Typically,legacyWANarchitecturesalsocreatecomplexandcostlybranchofficeoperationswithrigidandsiloedtoolsthatdivertcriticalresourcesawayfromforward-lookingprojects.
Software-definedWAN(SD-WAN)solutionspresentanopportunitytoovercomethesechallengesanddeliverhigh-qualitycustomerexperiencesaroundtheworld.
Thisisdonebytreatingthenetworkascode,separatingcontrolmechanismsfromhardwaretoinfusenetworkagility.
Inparticular,CitrixSD-WANoffersascalable,reliable,andcloud-readyapproachtohandletoday'sapplicationtraffic.
IntroducingCitrixSD-WANCitrixSD-WANisanext-generationWANedgeplatformthatprovideshighperformanceandconsistentapplicationdeliverytobranchandhomeofficeusers.
Thismeansglobalbusinessuserscansecurelyconnecttothecloud,SaaSapplications,publicinternet,anddatacenters,givingthemtheflexibilitytomeettheiruniquebusinessneeds.
Additionally,CitrixSD-WANprovidesresiliencytominimizeoutagesandtheresultingimpactonday-to-dayoperations.
Withinthebranchoffice,CitrixSD-WANcanreplaceand/orconsolidateexpensiveroutingandsecurityinfrastructure,simplifyingnetworkmanagementandreducingcosts.
BusinessescanfurtherstreamlinemanagementbycontrollingallaspectsoftheSD-WANfromasinglepaneofglass.
4CitrixSD-WANvs.
othersolutionsWhenconsideringSD-WANsolutions,itisimportanttounderstandwhatseparatesCitrixSD-WANfromotherproviders.
CitrixSD-WANprovidesauniquecombinationofproactiveapplicationtrafficmanagement,end-to-endQuality-of-Service(QoS),routing,andWANoptimizationcapabilitiesthatresultinaconsistent,high-qualitycustomerexperience.
Additionally,CitrixSD-WANprovides:IntelligenttrafficsteeringEstablishandenforcefirewallandSD-WANpolicieswithanintegrateddatabaseincludingmorethan4,300applicationsandsub-applications,soyoucanidentifyandclassifyapplicationsinrealtimeusingdeeppacketinspection.
FailoverresiliencyDon'tletnetworkproblemsdegradethecustomerexperience.
Failoverresiliencyreactstosmallchangesinthenetworkstateinsub-seconds,takingjustacoupleofpacketstofailover.
Intelligentpathselectionbypacketvs.
flow-basedDynamicallyselectthebestpathforeachpacketbasedonapplicationrequirementsandnetworkconditions.
WANEdgeModeSimplifynetworkinsertionusingBorderGatewayProtocol(BGP)orOpenShortestPathFirst(OSPF)routing.
Superioruserexperienceforvirtualdesktops/applicationsandenterpriseapplicationsDeliverconsistent,reliable,high-performanceaccesstovirtualdesktops/applicationsandenterpriseapplicationswithoptimizedHDXtraffic,bi-directionalQoScapabilities,user-levelreporting,andmore.
BoostnetworkingcapabilitieswithCitrixSD-WANonAWSByrunningCitrixSD-WANonAWS,businessescanbuilduponnativefeaturesandenhancetheirnetworkingcapabilities.
AWSisarecognizedcloudprovider,beingnamedasaCloudLeaderinGartner'sInfrastructureandPlatformServicesMagicQuadranteachyearsince20111.
KeyadvantagesofrunningonAWSincludeanextensiveglobalfootprint,nativeaccesstoabroadanddeepsetoftraditionalandemergingITresources,andcontinuousinnovation.
ThisdocumentwillexplorethevarioususecasesandbenefitsuniquetorunningCitrixSD-WANonAWS.
1https://aws.
amazon.
com/blogs/aws/aws-named-as-a-cloud-leader-for-the-10th-consecutive-year-in-gartners-infrastructure-platform-services-magic-quadrant/5HighavailabilityonAWSAsof2020,AWSspans77AvailabilityZones(AZs)within24geographicRegionsaroundtheworld.
TheseAZsareconnectedwithlowlatency,highthroughput,andhighlyredundantnetworking,makingitpossibleforbusinessesofallsizestoseamlesslyestablishaglobalpresencewhilereducingtheiron-premisesfootprinttoprovidereliableaccesstoITresources.
CitrixSD-WANcustomerscanusetheAWSglobalfootprinttoeasilyconstructageographicallyredundant,highlyavailablenetworkarchitecture.
Doingsowillenableconsistentapplicationaccessandperformance.
TransitGatewayConnectAWSTransitGatewayallowsorganizationstocreateandmanageasinglegatewaytoconnecttheirAmazonVirtualPrivateCloud(AmazonVPC)deploymentsandtheiron-premisesnetworks.
AscustomersscaletheirnetworksacrossmultipleAmazonVPCsandAWSaccounts,AWSTransitGatewaysimplifiesmanagementandreducesoperationalcostsbyactingasahubthatcontrolshowtrafficisroutedthroughouttheconnectednetworks.
Additionally,AWSTransitGatewaymakesiteasyforcustomerstoscaletheirnetworkbecauseeachnewconnectedAmazonVPCisautomaticallyavailabletotheotherconnectednetworks.
TransitGatewayConnectisanativeintegrationbetweenCitrixSD-WANandAWSTransitGatewaythatsimplifiesacustomer'sabilitytobuildandmanageglobalprivatenetworks.
ItallowscustomersconnectAmazonVPCsandon-premisesnetworksusingCitrixSD-WAN,enablingtheuseofper-packetloadbalancingfromon-premisesenvironmentstoAWSforahigherqualityuserexperience.
Additionally,TransitGatewayConnectallowscustomerstoconsolidateCitrixSD-WANdeploymentsonAWS.
On-premisestocloudroutingwithOSPFandBGPCitrixSD-WANprovidesstrongconnectivityviatunnelsbetweenbranchoffices,datacenters,andAWSresources.
Thisisdonebyapplyingroutetablesthatoverlaytheexistingunderlaynetwork.
Theseroutetablescanreplaceorcoexistwiththecurrentroutinginfrastructure.
CitrixSD-WANsupportsOSPFandBGP(amongother)routingprotocols,makingiteasiertointegrateCitrixSD-WANincomplexunderlaynetworkswheretheseprotocolsarealreadyinuse.
Insomesituations,customersmayhaveCitrixSD-WANdeployedattheirbranchoffice,butnotdeployedwithintheirAmazonVPC.
Here,customerscanintegrateCitrixSD-WANwiththeexistingunderlaynetwork,usingOSPFandBGProutingprotocols.
DoingsoenablescommunicationbetweentheSD-WAN-enabledsiteandnon-SD-WANAmazonVPCviatheVGW,orovertheIPsecVPNconnection.
Ultimately,thisallowscustomerstointeroperatetheiron-premisesCitrixSD-WANdeployments,eveniftheydon'thaveaCitrixSD-WANinstanceprovisionedintheirAmazonVPC.
6EnhancednetworkingwithSR-IOVsupportOneofthecorevaluesofCitrixSD-WANisthatithelpsglobalbusinessesprovidehigh-performance,reliableexperiencestocustomersforalltypesofapplications–regardlessofwherethecustomersarelocated.
ByrunningCitrixSD-WANonAWS,organizationscanfurtheraugmentthesecapabilities,thankstosupportforsinglerootI/Ovirtualization(SR-IOV).
SR-IOVisaPeripheralComponentInterconnect(PCI)Expresstechnologythatenableshighperformancenetworkingcapabilities.
ItallowsasinglePCIdevicetoappearasmultiple,virtualizeddevices(called"virtualfunctions").
ThehypervisorassignsoneormorevirtualfunctionstoanSR-IOV-enabledAmazonElasticComputeCloud(AmazonEC2)instancetohandleitstraffic.
Inthisparticularusecase,SR-IOVworkswithAmazonEC2instancesequippedwithanElasticNetworkInterface(ENI).
AnENIisalogicalnetworkingcomponentthatrepresentsavirtualcardwithattributeslikeIPaddress,MACaddress,securitygroups,portrules,andmoreattachedtoit.
Ultimately,SR-IOVsupportenableshigherinput/output(I/O)performanceontheENIwithlowerCPUutilization,aswellaslowerlatencybetweenSR-IOV-enabledAmazonEC2instances.
CitrixSD-WANsupportsAmazonEC2M4andC4instances.
ResourcemonitoringwithAmazonCloudWatchAmazonCloudWatchisaservicefromAWSthatprovidesactionableinsightsformonitoringandmanagingcloudandon-premisesresources.
Bycollectingmonitoringandoperationaldataintheformoflogs,metrics,andevents,CloudWatchdeliversusersasingularviewofalltheirenvironments.
CustomerscanuseCloudWatchtogeneratealarms,createvisualizations,automateactions,andmore.
CitrixSD-WANsupportsbasicCloudWatchmetricstohelporganizationsmonitorSD-WANinstancesrunningonAWS.
Thisenablesthegenerationofnotificationsthatcorrespondwithspecificeventsandautomatedchangestotheresourcesbeingmonitored.
Overall,thiscreatesricherinsightsandstreamlinedmanagementfortheusersoperatingCitrixSD-WAN.
ThefollowingmetricscanbemanagedandmonitoredthroughCloudWatchforCitrixSD-WAN:CPUutilization:Thepercentageofallocatedcomputeunitsthatarecurrentlybeingusedfortheinstance.
Thismetricidentifiestheprocessingpowerrequiredtorunanapplicationinaselectedinstance.
Diskreadoperations:Readoperationsfromallinstancevolumesavailableforthespecifiedperiod.
Diskwriteoperations:Writeoperationsforallinstancestorevolumesavailablefortheinstanceinaspecifieddurationoftime.
Diskreadbytes:Byteswrittentoallinstancestorevolumesavailabletotherunninginstance.
Networkin:Thevolumeofincomingtrafficforasingleinstance.
Networkout:Thevolumeofoutgoingtrafficforasingleinstance.
Networkpacketsout:Numberofpacketssentoutonallnetworkinterfacesbytheinstances(onlyavailableforbasicmonitoring).
7Getstarted:TestdriveCitrixSD-WANCitrixSD-WANenablesyoutoembraceacloud-firststrategybyreliablydeliveringhigh-qualityconnectionstoapplicationsforend-usersaroundtheworld.
ByrunningCitrixSD-WANonAWS,youcanimproveapplicationavailability,modernizeyourWANforthecloud,getreal-timemonitoringandinsights,andmore.
ExplorethebenefitsofrunningCitrixSD-WANonAWSforyourself.
Belowarefree-trialoptionsavailablethroughAWSMarketplace:CitrixSD-WANStandardEditionSD-WANVPXforbranchofficesResourcestolearnmoreCitrixSD-WANCitrixandAWSAWSGlobalInfrastructureAmazonVPCAmazonCloudWatch

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