6/16/20214G to 5G Migration215G:Evolution vs Revolution ?ZSMCloudSBANFVSlicingMicroSDNService@TarikTALEB20212211
6/16/2021 11 4G to 5G Migration 5G: Evolution vs Revolution ? © Tarik TALEB 2021 Cloud Micro Service NFV SDN Slicing SBA ZSM 21 22
6/16/2021Mobile NetworkFunction VirtualizationGeneral purposeSingle service, single tenantmulti-service, muiti-tenantnetworkboxesprocessingplatformsSoftware-based networkDedicatedHW/SWboxessolutionsRunmobileDedicatednetworkfunctions(e.g.MME) inNetwork FunctionCommonCarrierstandardVM(eg.MMEServingGWNF1NF2NF3CarrierPDN-GW).NetworkVMVMNetworkNodesOperatingSystemCloud(e.g.NodeXGSN,Virtualization Platform (HW)HWPlatform(ProcandStorage)Processing and StoMME,AnewNWproductionenvironment,basedonmodernvirtualizationtechnology,tolowercostraiseefficiencyandtoincreaseagility@TarikTALEB202123NFV ComponentsNetworkFunction(NF):FunctionalbuildingblockwithwelldefinedinterfacesandwelldefinedfunctionalbehaviorVirtualizedNetworkFunctionVNF):SoftwareimplementationofNFthatcanbedeployedinavirtualizedinfrastructureVNFForwardingGraph:Servicechainwhennetworkconnectivityorderisimportant,e.g.firewall,NAT,loadbalancer@TarikTALEB20212412
6/16/2021 12 Mobile Network Function Virtualization Single service, single tenant network boxes General purpose multi-service, multi-tenant processing platforms Dedicated HW/SW boxes Software-based network solutions A new NW production environment, based on modern virtualization technology, to lower cost, raise efficiency and to increase agility. © Tarik TALEB 2021 NFV Components © Tarik TALEB 2021 ▐ Network Function (NF): Functional building block with well defined interfaces and well defined functional behavior ▐ Virtualized Network Function (VNF): Software implementation of NF that can be deployed in a virtualized infrastructure ▐ VNF Forwarding Graph: Service chain when network connectivity order is important, e.g. firewall, NAT, load balancer 23 24
6/16/2021NetworkForwardingGraphAnend-to-end servicemayincludenestedforwardinggraphsVNF-DNetwork ServiceVNFVNF-DPhysicalPhysicalVNF-BVNFNetworkNetworkFunctionsFunctionsVNF-EVNF Forwarding GraphNetworkServiceProvider@TarikTALEB202125Network Forwarding Graph:Service Function ChainingServicePhysicalManaoementandorchestratiorSubscribeE@TarikTALEB20212613
6/16/2021 13 Network Forwarding Graph © Tarik TALEB 2021 ▐ An end-to-end service may include nested forwarding graphs VNF-D2 VNF-C VNF-A VNF-B Network Service VNF-D1 VNF-E Physical Network Functions Physical Network Functions VNF Forwarding Graph Network Service Provider Network Forwarding Graph: Service Function Chaining © Tarik TALEB 2021 25 26
6/16/2021NFV ComponentsNetworkFunction(NF):Functionalbuildingblockwithwelldefinedinterfacesandwell definedfunctionalbehaviorVirtualizedNetworkFunction(VNF):Softwareimplementationof NFthat can bedeployed inavirtualized infrastructureVNFForwardingGraph:Servicechainwhennetworkconnectivity order is important, e.g.firewall, NAT, loadbalancerNFVInfrastructure(NFVI):Hardwareandsoftwarerequiredtodeploy,manageandexecuteVNFsincludingcomputation,networkingandstorageNFVManagement&Orchestration:Theorchestrationofphysical/softwareresourcesthatsupporttheinfrastructurevirtualisation,andthemanagementofVNFsTarik TALEB202127ETSINFV ArchitectureManagement&OrchestrationDomainVNF DomainOs-MaOSS/BSSOrchestratosMeVice,VNF1100VnfnEMSEMS 2EMS 3Ve-VntmVNFX+Manager(sVNE 3VNF1VNF 2NFVInfrastructureDomainVirtualVintoViutualmoUNf-WtualisedVirtualisionLavenfrVI-HeManager(s)souceonmputinNetworHaxHamhua@TarikTALEB20212814
6/16/2021 14 NFV Components © Tarik TALEB 2021 ▐ Network Function (NF): Functional building block with well defined interfaces and well defined functional behavior ▐ Virtualized Network Function (VNF): Software implementation of NF that can be deployed in a virtualized infrastructure ▐ VNF Forwarding Graph: Service chain when network connectivity order is important, e.g. firewall, NAT, load balancer ▐ NFV Infrastructure (NFVI): Hardware and software required to deploy, manage and execute VNFs including computation, networking and storage ▐ NFV Management & Orchestration: The orchestration of physical/software resources that support the infrastructure virtualisation, and the management of VNFs ETSI NFV Architecture © Tarik TALEB 2021 NFV Infrastructure Domain VNF Domain Management & Orchestration Domain 27 28
6/16/2021NFV MANO:NFV OrchestratorNfVOrchestratorResponsibleforthelifecycleOSS/BSS(NFVO)managementofNetworkServices:Ina singledomain·OvermultipledatacentersVNFManagerE/NMSAppliespoliciesforresource(VNFM)utilization-InstantiatestheVNFVNFManagersVirtualisedLinkagetolegacysystemsInfrastructureNFVIthroughOperations/BusinessManagerSupportSystem(OSS/BSS)Simplified(VIM)Tarik TALEB202129NFV MANO:VNF ManagerResponsibleforthe lifecycleNfVOrchestratorOSS/BSSmanagementofVirtual(NFVO)NetworkFunctionsinstancesOneperNFOnepermultipleVNF?instanceseven of differenttypesVNFManagerE/NMSIthastosupportthe:(VNFM)VNF instantiationVNFconfigurationVNFVNFupdateVNFscalingin/outVirtualisedVNFinstanceterminationInfrastructureNFVIInterfaceswithE/NMS-ManagerMonitoringSystemsSimplified(VIM)@TarikTALEB20213015
6/16/2021 15 NFV MANO: NFV Orchestrator © Tarik TALEB 2021 ▐ Responsible for the lifecycle management of Network Services: ⚫ In a single domain ⚫ Over multiple datacenters ▐ Applies policies for resource utilization ▐ Instantiates the VNF Managers ▐ Linkage to legacy systems through Operations/Business Support System (OSS/BSS) NFV MANO: VNF Manager © Tarik TALEB 2021 ▐ Responsible for the lifecycle management of Virtual Network Functions instances ⚫ One per NF ⚫ One per multiple VNF instances even of different types ▐ It has to support the: ⚫ VNF instantiation ⚫ VNF configuration ⚫ VNF update ⚫ VNF scaling in / out ⚫ VNF instance termination ▐ Interfaces with E/NMS - Monitoring Systems 29 30