云就緒融合 SDN 傳輸.pdf

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1、#CiscoLive#CiscoLiveWaris Sagheer,CTO Routing Architecture,Cisco Systems Inc.BRKSPG-23155G Network Evolution to Hybrid/Multi-CloudCloud-Ready Converged SDN Transport 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveEnter your personal notes hereCisco Webex App 3Questions?Us

2、e Cisco Webex App to chat with the speaker after the sessionFind this session in the Cisco Live Mobile AppClick“Join the Discussion”Install the Webex App or go directly to the Webex spaceEnter messages/questions in the Webex spaceHowWebex spaces will be moderated by the speaker until June 9,2023.123

3、43https:/ 2023 Cisco and/or its affiliates.All rights reserved.Cisco PublicBRKSPG-2315#CiscoLive 2023 Cisco and/or its affiliates.All rights reserved.Cisco PublicAgenda5G Global Deployment StatisticsSP Network TransformationSP&Hyperscalers PartnershipSP workload and network requirementCisco SP hybri

4、d/multi-cloud solutionHybrid/multi-cloud 5G MNO case studyConclusion4BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveO-RU-Radio Unit aka RRH,TRPO-DU-Distributed UnitO-CU-Centralized UnitFEDC-Far Edge Data CenterEDC-Edge Data CenterRDC-Regional Data centerUPF-Pa

5、cket core user plane functionCRAN-Centralized RAN or Cloud RANCP-Control PlaneCSR-Cell Site Router5G SA-5G Stand AloneGlossary5FH-FronthaulAAV-Alternate Access Vendor aka Backhaul providerLDC-Local Data centervRAN-virtual Radio access networkMNO-mobile network operatorCSP-communication service provi

6、derUPFv-User Plane Function for VoiceUPFd-User Plane Function for dataMgmt.-Management&OrchestrationCNF-Cloud-Native Network FunctionGD plane Generalized data planeOTT-over-the-topBRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive5G Commercial Networks6BRKSPG-231

7、5Operators 33(August 2022)*https:/www.5gamericas.org/resources/deployments/https:/ operators deployed 5G SA commercially 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveUSA“Mobile Network Experience Report”Source:OPENSIGNAL7BRKSPG-2315 2023 Cisco and/or its affiliates.All

8、rights reserved.Cisco Public#CiscoLiveThe Changing Landscape of SP NetworksService Provider(SP)ChallengesSPs invest to meet massive data demand8BRKSPG-2315+137%Projected Data traffic increase by 2026*$1.4T Network upgrade costs 2022-2026*-37%Median ARPU decline 2012-2021*source:Analysys Mason Datahu

9、b based on a sample of 27 countries70-80%OTT(YouTube,Netflix etc.)traffic in SP Network$100B+US C-band spendingValue added services moving to OTT providers 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveThe Changing Landscape of SP NetworksSP Strategy5G driving Cloud and

10、Network as a Service(NaaS)strategiesExplore differentiated solutions with partners to generate new revenue streamsFixed Wireless Access(FWA):The first big 5G use caseQ4CY2022,T-Mobile and Verizon 4M customers and expect to have 11M to 13M by 2025 Converged and discounted offers from top wireless and

11、 cable players Private 5G use cases5G satellite access5G Advanced&road to 6G9BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSP Network TransformationSP Network Function Decomposition&Virtualization10BRKSPG-2315Cloud Native 5G Packet CoreCloud Native ORAN/vRANC

12、loud Native BNGControl Plane(CP)User Plane Function(UPF)Centralized Unit(O-CU)Distributed Unit(O-DU)Control PlaneUser Plane 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSP Network TransformationTransition to the Telco Edge11Edge DCs,1K+Edge DCs,1K+Cell SitesCell SitesRe

13、gional DCs,Regional DCs,100s100sFar Edge DCs,Far Edge DCs,10K+10K+Central DCs,10sCentral DCs,10sO O-DU,(CUDU,(CU-UP,UPF)UP,UPF)O O-DU,(CUDU,(CU-UP,UPF)UP,UPF)O O-DU,(CUDU,(CU-UP,UPF)UP,UPF)O O-DUDUO O-CU,UPF,CU,UPF,PeeringPeeringO O-CU,UPF,CU,UPF,PeeringPeeringO O-CU,UPF,CU,UPF,PeeringPeeringCPCPCPC

14、PCentral Central DCDCCentral Central DCDCO O-DU+OCUDU+OCUPublic CloudFlexible&Dynamic SP Workload Placement(on-premises,co-location,private&public cloud)BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSP Network TransformationFar Edge constraints12BRKSPG-2315Pr

15、e-AggRegional DCCentral DCPublic CloudCell SiteInternetO-CU,UPF,CDN,AI/ML CSR +O-DU10,000s1,000sFar EdgeDCNear EdgeFar Edge constraints limits the applicability of generic DC solutions:Limited space and power prevent simply adding more servers to increase compute capacityDistributed locations make m

16、anagement more challenging 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSP Network TransformationMulti-Access Edge Computing(MEC)13BRKSPG-2315Ultra-low latency/jitter reductionVirtual and augmented realityContent Delivery(downstream)Video,Softwaredownloads&updatesData R

17、eduction(upstream)Surveillance,IoT,Edge analyticsMass CustomizationLive event coverageLocalizationIndustrial AutomationInfrastructure Workload HostingUPF,O-CU,O-DUHybrid CloudEdge ServicesLatencyBandwidth OptimizationEdge Connectivity&hybrid/multi-cloudAccessPre-AggAggregationCoreRegional DCEdge DCC

18、ell SiteFar Edge DCPublic CloudCentral DC 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSP Network TransformationRAN Transport Architecture14BRKSPG-2315BackhaulO-RUO-CU,O-DU O-DUMidhaul5G CP,UPFvO-RUDRAN(Distributed RAN)DRAN(Midhaul)RouterCloAccessPre-AggAggregationCoreC

19、entral DCRegional DCEdge DCCell SiteFar Edge DCO-CU,UPFd5G CP,UPFvMgmt.Mgmt.BackhaulPublic Cloud 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSP Network TransformationRAN Transport Architecture15BRKSPG-2315 5G New Radio(NR)“Beamforming,Massive MIMO”High Bandwidth(25G-40

20、0G)in fronthaul,midhaul&backhaul Optics:25G is becoming baseline,100G ZR,400G DCO ZR/ZR+,BIDI optics Low Latency applications 20KM F1-U&F1-C(IP)|800-9K bytesFronthaul(F2)Split 7Split 7.2x(ORAN)75 us/100 us 75 us/100 us(HENS*)(HENS*)160 us*160 us*40KM User Plane&Control Plane -VLAN tagged|800-9K byte

21、s Synchronization plane is untagged multicast|1500 bytes Management plane is IPv6/IPv4 routed|1500 bytes LatencyLatencyFiber Latency5 us/km5 us/km20 km=20 x 5=100 us*O*O-RAN.WG4.IOT.0RAN.WG4.IOT.0-v03.00(NR TDD|NR FDD|LTE TDD|LTE FDD IOT Profile)v03.00(NR TDD|NR FDD|LTE TDD|LTE FDD IOT Profile)*HENS

22、=Huawei,Ericsson,Nokia&Samsung*HENS=Huawei,Ericsson,Nokia&SamsungLatency Number varies with RAN vendor implementation.Check with your RAN vendor.Latency Number varies with RAN vendor implementation.Check with your RAN vendor.2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive

23、FrequencyTiming and Synch Fronthaul Options90BRKSPG-2315FronthaulvBBUWAN/BackhaulMobile CoreRURURURURURURU:Remote UnitPre-Agg LayerWAN/BackhaulMobile CoreeNBeNBeNBeNBeNBeNBRU:Remote UnitDistributed RANCentralizedRANMidhaulDUFronthaulCUDUWAN/BackhaulMobile CoreRURURURURURURU:Remote UnitCentralized Un

24、itDistributed UnitCloudRANCPRI CPRI carries its carries its own timeown timePhaseDistributed RANDistributed RANCentralized RANCentralized RANCloud/Midhaul RANCloud/Midhaul RAN1.5uS phase between radiosBackhaul carries sync from pre-aggregation layer;orGPS at every cell site 1.1uS between BBUsBackhau

25、l carries sync or place GPS at every BBU hotelCPRI is synchronous;buteCPRI requires PTP or GPS130nS between RU/DUMidhaul carries sync or GPS at every DU hoteleCPRI requires PTP in Fronthaul or GPS at every RU and DUeCPRI eCPRI uses uses PTPPTP 2023 Cisco and/or its affiliates.All rights reserved.Cis

26、co Public#CiscoLiveSDNMetro Network DomainSDNCore Network DomainSDNData Center DomainAggregationHomogenous Cross-domain Automation&AssuranceEnd-to-end service provisioning is integrated with NfV,SDN Multiple network domains under same management teams Automated operations Integrated underlay and ove

27、rlay networks(NfV)Network as API(NfV)Hyper Scale(5G)Centralized Services DeliverySRv6:SDN,NfV,5G ready“Network as an API”for Service Creation91BRKSPG-2315Cloud Scale NetworkingCentral OfficeAccessComputeLeafSpineVNF VNFVNFVNFSDN ControlSegment Routing v6(transport,services and programmability)2023 C

28、isco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveEnable Segment Routing On HW Platforms(Software only)Enable Segment Routing On HW Platforms(Software only)Network SimplificationNetwork SimplificationNetwork ResiliencyNetwork ResiliencyEndEnd-User ExperienceUser ExperienceMultiMul

29、ti-Domain ControlDomain ControlService VelocityService VelocityE2E Application ControlE2E Application ControlBenefitsBenefitsNetwork ProgrammingNetwork ProgrammingHyperscale:Simplicity beyond 100K nodesHyperscale:Simplicity beyond 100K nodesInsert Orchestration Components(e.g.SRInsert Orchestration

30、Components(e.g.SR-PCE,PCE,NSO,.)NSO,.)Connect with VNFsConnect with VNFsSRv6SRv6Segment Routing JourneyAdding value at your own pace92BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive BGP/MP-BGP,Anycast,L3VPN,BFD&QOSTo enable connectivity within cloud and the on

31、-premises network to cloudDynamic routing in the cloudNetwork separation(VRF Inter-DC)Traffic isolation across on-premises,public cloud,and third parties(like voice aggregators,regulatory entities,etc.).IP overlapping at peering partner networks(VRF)High Availability,routing it to the standby NF in

32、case of failureGeo-Redundancy to enable service continuity during outageLink/Network error detectionNetwork SlicingRouting features at scaleUnified forwarding and service plane across on-premises and cloud environments enabling flexible workload placementStandard routing technologies common across c

33、louds&on-premises enabling hybrid&multi-cloudno cloud lock-inSP Workload Network RequirementsSP Workload Network RequirementsSP Workloads differ from Enterprise/IT Applications93BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveNCS 5700 Fixed PortfolioHigh Scale

34、Aggregation94BRKSPG-2315Timing400G ZR/ZRPEVPNSegment RoutingMACSecTrustNCSNCS-57B157B1-6D246D24NCSNCS-57C157C1-48Q6D48Q6D-S S400G ZR/ZR+1RU;4.8 Tbps throughput24x100G+6x400GMACSEC,TimingNCSNCS-57B157B1-5DSE5DSE400G ZR/ZR+1RU;4.4 Tbps throughput 24x100G+5x400GMACSEC,TimingExternal TCAMNCSNCS-57C357C3

35、-MODMOD-S S400G ZR/ZR+3RU;2.4T throughputFixed:48x1/10/25G+8x100G QSFP283 x MPA:2x800G+1x 400GMACSEC,TimingNCSNCS-57C357C3-MODMOD-SESE400G ZR/ZR+1RU;2.4T throughput32x1/10/25G+16x1/10/25/50G+6x400GMACSEC,Timing400G ZR/ZR+3RU;2.4T throughputFixed:48x1/10/25G+4x100G QSFP283 x MPA:2x800G+1x 400GMACSEC,

36、TimingExternal TCAMNCS5700 Products J2/J2c/J2C+NCSNCS-57D257D2-18DD18DD-SYSSYS400G ZR/ZR+2RU;7.2 Tbps throughput 2x400G+16x400G/64x100GMACSEC,IPsec*Class C Timing 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveInterfacesThroughputTimingPower2x 100/40GE8x 25/10/1GE16x 10/1

37、GE4x 1GE Cu300GMax Interfaces:564GGNSSClass CFixed:1 AC1+1 DC12x 10/1GE12x 1GE4x 1GE Cu160GMax Interfaces:136GGNSSClass CFixed:1 AC1+1 DCN540X-16Z4G8Q2C-D/AN540X-12Z16G-SYS-D/ANCS 540 Medium Density Routers95BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveNCS 5

38、40 Large Density Router96BRKSPG-2315InterfacesThroughputTimingPowerN540-24Q8L2DD-SYS2x400GE8X50/25/10/1GE24x25/10/1GE800GMax Interfaces:1TBGNSSClass CModular:1+1 AC/DCQDD-400G-ZR-SQDD-400G-ZRP-S 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveInterfacesThroughputTimingPowe

39、rRelease6x 10/1GE18x 1GE64GMax Interfaces:78GClass CFixed:1+1 AC 1+1 DCFeb 20218x 10/1GE4x 1GE SFP4x 1GE RJ458x 1GE SFP or 16x 1GE cSFP120GMax Interfaces:104GClass CFixed:1+1 AC 1+1 DCFeb 20212x 25/10/1GE4x 10/1GE10 x 1GE4x 1GE Combo SFP/RJ45120GMax Interfaces:104GClass CFixed:1+1 AC 1+1 DCAug 2021N

40、540X-6Z18G-SYS-D/AN540X-8Z16G-SYS-D/AN540X-4Z14G2Q-D/ANCS 540 Small Density Routers97BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveNCS 540 Fronthaul Routers98BRKSPG-2315InterfacesThroughputTimingPowerRelease8xCPRI+*4x1/10G/CPRI,8x1/10G,4x10/25G 2x10/25G(802.1

41、Qbu)2x100G300GMax Interfaces:550G*Class CModular1+1 AC 1+1 DCFeb 202124x10G/25G*(802.1Qbu,CPRI 3-8)4x100G900GMax Interfaces:1000GClass CModular1+1 AC 1+1 DCFeb 2021*Universal Port=Port can be used for CPRI or eCPRI or Ethernet(1/10/25GE)N540-FH-CSR-SYSN540-FH-AGG-SYSSlicing Overview 2023 Cisco and/o

42、r its affiliates.All rights reserved.Cisco Public#CiscoLiveNetwork Slicing is fundamentally an end-to-end partitioning of the network partitioning of the network resources and network functions resources and network functions on a shared infrastructure so that selected applications/services/connecti

43、ons may run in isolation run in isolation from each other for a for a specific business purposespecific business purposeIts about offering:1)Service Intent and Abstraction2)End to End Service Level Agreements(SLAs)3)SLOs:Delay,jitter,loss,availability 4)SLEs:Disjoint paths,encrypted paths,etc.Intent

44、 with Transport Network Slicing:A Definition100BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveDefining Transport Slicing Scope:3GPP reference architecture for 5G network slicing 101BRKSPG-2315Scope of Transport slice managementNSMF=Network Slice Mgmt.FunctionN

45、SSMF=Network Slice Subnet Mgmt.FunctionNST=Network Slice TemplateNSST=Network Slice Subnet TemplateNSI=Network Slice InstanceNSSI=Network Slice Subnet InstanceIP+optical5G”Network Slice”5G”Network Slice”“Transport“Transport Slicing”Slicing”Scope of 5G Network slice management 2023 Cisco and/or its a

46、ffiliates.All rights reserved.Cisco Public#CiscoLiveNSSINSSINSI(Network Slice Instance)RANTransport5GCoreUPFslo-sle-templateNSSTNSSTNST3GPP RANO-RANO-RAN.WG1.Slicing-Architecture-v08.00(Oct 2022)O-RAN.WG8-IOT-v05.00(Oct 2022)O-RAN.WG1.Study-on-O-RAN-Slicing-v02.00(April 2020)Per-Domain Slice 102BRKS

47、PG-23153GPP SA/CTO-RANO-RAN WG9 Xhaul Packet Switched Architectures and Solutions 3.0IETFSST/SDUE1SST/SDUE2Slice TemplatesSST/SD=Slice SelectionNSSI 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveHow is a user/UE placed into a“slice”3GPP-5G Slice ID=ST/SD103BRKSPG-2315Sli

48、ce TypeSlice Differentiator1 byte3 bytesSlice ID=S-NSSAIS-NSSAI:Single Network Slice Selection InformationSP Custom Slice Services?SP Custom Slice Services?Slice Type(SST)(examples)Slice Type(SST)(examples)Link Affinity-Blue Links100 Max Delay 20ms101Encrypted Links102Example:Custom slices SP define

49、dUltimately,the control plane(AMF)uses the S-NSSAI(sliceID)from the UE to drive selection of a UPF for the user.S-NSSAI can also be used by RAN to select a CU-UP.Slide ID Set:NSSAIApplicationSlice ID,DNNPDU Session 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveO-RAN 5G T

50、ransport Architecture104BRKSPG-2315Source:O-RAN Xhaul Packet Switched Architectures and Solutions5G transport slicingTransport separation between Fronthaul,Midhaul,Backhaul interfaces.Transport separation between Control,management,and user plane interfaces of each domain.Adapted from O-RAN WG-9 Pac

51、ket Switched xhaul Architecture and Solutions 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveQoS and H-QoS:Core and edgeForwarding Planes:Shortest Path/SR policies(SRv6/SR-TE/Flex-algo/Circuit-Style)SR underlay performance management tools(SR-PM)Virtual Private networks:L

52、2/L3 VPNs ODN and Automated traffic Steering(AS)VPN performance management tools(TWAMP,Y1731)Cisco Toolset for transport level slicing105BRKSPG-2315Creating and managing the forwarding planeSlice isolation and mapping to slice forwarding planes.Combining these offer different levels of transport sli

53、ce separation(ie soft or hard slice solutions)2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive5G O-RAN Slicing:Phase 1106BRKSPG-2315Source:O-RAN Xhaul Packet Switched Architectures and Solutions 3.0 (O-RAN.WG9.XPSAAS-v03.00)Only Backhaul slicingNo Midhaul and Fronthaul sli

54、cingCentralized UPF 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive5G O-RAN Slicing:Phase 2107BRKSPG-2315Source:O-RAN Xhaul Packet Switched Architectures and Solutions 3.0 (O-RAN.WG9.XPSAAS-v03.00)Backhaul&Midhaul slicingNo Fronthaul slicingDistributed UPF 2023 Cisco and/

55、or its affiliates.All rights reserved.Cisco Public#CiscoLiveControl and Management Plane VPNs architectureApplicable to both phase 1,phase 2&phase 3108BRKSPG-2315Regional DC Far Edge DC Edge DC Cell SitesTransport NetworkCentral DC O2 interface plane (DC management)Transport management plane O-RAN c

56、ontrol and management network(A1,E1,O1)Fronthaul Management Network(FH M-Plane)MH and BH Control plane Network (f1-c,E1,Xn-c,N1,N2,N4)Transport and DC infrastructureO-RAN3GPPSource:O-RAN Xhaul Packet Switched Architectures and Solutions 2023 Cisco and/or its affiliates.All rights reserved.Cisco Publ

57、ic#CiscoLivePacket-switched underlay network Transport plane per 5G service type109BRKSPG-2315VPNVPNVPNVPNVPNTransportPlane XTransportPlane YTransportPlane ZVPN01VPN02VPN03VPN04VPN05VPN06Prefix:eMBB1VPN Label:V1PNH:PE1RT:VPN01Color:1PE1PE2PE4Prefix:eMBB2VPN Label:V2PNH:PE1RT:VPN02Color:1Prefix:URLLC

58、2VPN Label:V6PNH:PE1RT:VPN06Color:3VRF Import based on RT Mapping based on ColorAutomatic mapping between service prefix and underlay transport plane based on Color Extended CommunityColor:1Color:1Color:2Color:2Color:3Color:1Color:2Color:3Transport Plane is a group of paths(tunnels)with common optim

59、ization strategy(topology constraints,metric type,)Tunnel types:Flex-Algo,RSVP-TE,SR-TE,SRv6-TE,BGP-CTeMBBservicesNB-IoTservicesURLLCservicesVPNColor:3PE3O-DUO-DUO-DUO-DUO-DUO-DUO-CUO-CUO-CUO-CUO-CUO-CUWithin the underlay network,multiple transport planes are built to meet the specific forwarding be

60、haviors associated with the different 5G services types.VPNs and traffic steering techniquesThe transport planes can utilize different topologies and be optimized based on different criteria Source:O-RAN Xhaul Packet Switched Architectures and Solutions 3.0 (O-RAN.WG9.XPSAAS-v03.00)2023 Cisco and/or

61、 its affiliates.All rights reserved.Cisco Public#CiscoLiveHigh-level QoS model for transport slices 110BRKSPG-2315UPFUPFUPFUPFUPFUPFDC-XDC-YVRF-3VRF-4VRF-6Transport Network DomainSlice 1(MBB Backhaul:N3/M9)Slice 2(mMTCBackhaul:N3/N9)Slice 3(NB-IOT Backhaul:N3/N9)Slice 4(another slice)Slice 5(another

62、 slice)Slice 6(another slice)VRF-1VRF-2VRF-3VRF-4VRF-5VRF-6transport edgeslice-awareingress policingVRF-1VRF-2VRF-5Slice 1(VLAN 1)O-CU-UPO-CU-UPO-CU-UPO-CU-UPO-CU-UPO-CU-UPSlice 1(VLAN 1)Slice 2(VLAN 2)Slice 3(VLAN 3)Slice 4(VLAN 4)Slice 5(VLAN 5)Slice 6(VLAN 6)Edge TNEEdge TNEtransport corenon slic

63、e-aware(flat)egress schedulingtransport edgeslice-aware(hierarchical)egress schedulingedge to coreclass mappingtraffic flow directionSlice 2(VLAN 2)Slice 3(VLAN 3)Slice 4(VLAN 4)Slice 5(VLAN 5)Slice 6(VLAN 6)recommendedoptionalTransport Core Traffic Class 1Transport Core Traffic Class 2Transport Cor

64、e Traffic Class 3Transport Core Traffic Class 4Transport Core Traffic Class 5Transport Core Traffic Class 6Transport Core Traffic Class 7Transport Core Traffic Class 8Source:O-RAN Xhaul Packet Switched Architectures and Solutions 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#Cisc

65、oLiveExample of QoS model with multiple priority queues 111BRKSPG-2315PortPriority SchedulingWeightWeightWeightWeightWeightPIRPIRPIRPIRPIRPIRPIRPIRPIR mandatoryPIR optionalScheduler parametersQueue buffer size aligned to maximum latency requirementsWFQ/WRR/WDRR/MDRR SchedulingPTP unaware modeCPRI(Ro

66、E),eCPRI CU-POAM with aggressive timers,5QI/QCI Group 1(low latency U-plane),low latency business trafficNetwork Control:OAM with relaxed timers,IGP,BGP,LDP,RSVP,eCPRI S-P,PTP(T-TC/T-BC)O-RAN/3GPP C-plane and M-plane(e.g.eCPRI M-plane,other management)5QI/QCI Group 2(medium latency U-plane)5QI/QCI G

67、roup 3(remaining GBR U-plane),guaranteed business traffic5QI/QCI Group 4(remaining non-GBR U-plane)other best effort(may be guaranteed)PQBQBQBQBQPQBQPQSource:O-RAN Xhaul Packet Switched Architectures and Solutions 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLivePacket Swit

68、ched Slicing:Quality of Service Recommendations for grouping of standard QCI/5QI 112BRKSPG-2315Diffserv model Fronthaul impacts traditional QoS designs 5QI/QCI groupings by behavioural characteristicsExample core queue design and mapping examples for multi-service environment*Source:O-RAN Xhaul Pack

69、et Switched Architectures and Solutions 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveModels describe intentA service model describes all the things you can do with the serviceModels allow forA common abstraction of intentA standard way of exchanging data(w/protocol)YANG

70、 Modeling language is becoming the clear leader here113BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive114BRKSPG-2315 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveWhy IETF Network slide service YANG?BRKSPG-2315&DevicesATT DISH host

71、ed Spring ORAN Plugfest,2022 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive117BRKSPG-2315Cisco and KeysightDemonstration of WG9 XHaul Transport Specifications over SRv6 for FH,MH and BH4thGlobal O-RAN PoCFestJune 2022 Closing Calls 2023 Cisco and/or its affiliates.All ri

72、ghts reserved.Cisco Public#CiscoLive118BRKSPG-2315Testbed SetupKeysight ORAN Transport Test solution is used to simulate CUSM traffic between RU and DU.Keysights Novus simulated 2 RUs,and 2 DUs on separate interfaces.GPS input is given to Cisco Router,which is configured as T-GM to distribute clock

73、across transport to synchronize RUs and DUs simulated by IXIA.Metronome Timing System is also provided with GPS input.Metronome used GPS input as a reference to measure time error received from transport on Keysight Novus ports.Traffic is sliced in RING topology using SRv6 uSID based topology:FH dat

74、a plane traffic is carried in low latency L2 EVPN slice,while FH management plane traffic is carried over L3 VPN slice.Characteristics of xHaul transport;FH,MH and BH is measured against latency,Jitter,Synchronization and convergence.Novus ChassisMTSMetronomeSplitterGPS inputRouter 3(T-GM)Router 1(T

75、-BC)Router 2(T-BC)O-DU 1O-DU 2O-RU 1O-RU 225GE25GE25GE25GE100GE100GE100GExHaul RING using SRv6 uSID 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive119BRKSPG-2315Test Scenario Introduction ORAN ORAN WG9 Test WG9 Test TESTTESTDESCRIPTIONDESCRIPTIONResultsResultsStatusStatus

76、8.2.1eCPRI over SRv6 uSID Keysight Novus emulates 2 pairs of O-DUs and O-RUs,Each configured with 2 X 400 MHz downlink and uplink carriers The traffic between ODU and ORU carried over SRv6 xHaul transportLatency for eCPRI traffic over SRv6 transport:11 usFor non-eCPRI traffic:28 usPASS8.2.2Constrain

77、ts based eCPRI transport over SRv6 uSID FA Slice(latency metric)is created in the network R1-R3 IGP metric is manually increased EVPN service is moved to FA slicePASS8.2.4L3VPN Service verification over SRv6 uSID L3VPN is created between each pair of O-DU and O-RU to carry M-plane traffic simulated

78、by Keysight Novus PASS8.4.2VLAN manipulation eCPRI streams are VLAN tagged by Keysight Novus VLAN is popped by routers R1 and R3 PASS8.4.4jitter verification Keysight Novus measures latency and jitter with different frame size transported over EVPN VPWS in the presence of high bandwidth low priority

79、 background trafficAverage Jitter for eCPRI traffic over SRv6 transport:600nsPASS8.5.5Convergence Interface connecting R1-R3 shut down eCPRI streams and M-plane streams are moved to backup path Interface connecting R1-R3 restored eCPRI streams and M-plane streams are moved to primary pathConvergence

80、 time during link failure:22msPASS9.1.14Time Synchronization testing Router 3 is T-GM.Both Router 3 and Ixia receives same GPS signal Keysight Novus receives PTP from all the ports emulating O-DU and O-RU Keysight Novus measures PTP time error against own reference and plot time error graphRelative time error:30nsPASS9.1.16Time Synchronization testing with background traffic While sending and receiving eCPRI streams and M-plane streams,Keysight Novus measures PTP time error against own reference and plot time error graph.PASS#CiscoLive