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1、#CiscoLive#CiscoLiveRavi Narahari,Sr.Technical Leader,Darth Vaders Mentor BRKSPG-2040Troubleshooting Troubleshooting 5G Architectures5G Architectures 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveEnter your personal notes hereCisco Webex App Questions?Use Cisco Webex App
2、 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 9,2023.12343https:/ 2023 Ci
3、sco and/or its affiliates.All rights reserved.Cisco PublicBRKSPG-20403Agenda 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public5G Technology SummaryCloudInvestigating where is 5G Network BrokenIP Transport Debugging case studiesWrap Up BRKSPG-204045G Technology Summary 2023 Cisco and/
4、or its affiliates.All rights reserved.Cisco Public#CiscoLive5G is Packet switched.More IP Troubles?1G2G3G4G5G1980s1990s2000s2010s2020sRadio and Voice/Data EvolutionService and Network RevolutionVoiceTXTVideo?Internet?TDM VoicePacket Data CapableNetwork AppliancesAll PacketVirtualised Infra.All Packe
5、tContainerised Infra.TDM VoiceLimited Data CapabilitiesNetwork AppliancesBRKSPG-20406 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveArchitecture EvolutionFronthaulbackhaulvRANvCoreUser planeAnalytics/TelemetryMANOSDNAutomateIP EdgeCentral DatacenterSRSRSRSRSRSRSRSRvCoreU
6、ser planeManaged VideovCoreControl planeMECSDN Network Fabric based on Segment RoutingData Center Fabric based on NFV5G ArchitectureIP CoreSRSRE2E Network SlicingLegacy 3G,LTE,LTE-A5G Virtual Machine-Container as time goes by.BRKSPG-204013 2023 Cisco and/or its affiliates.All rights reserved.Cisco P
7、ublic#CiscoLiveOpenStack NFVIHardwareInfrastructureas a ServiceCommon MobilityPlatformCommon ServicesLogging ServiceTelemetry agentsAPI GatewayProtocol Load BalancingControl Plane App ServicesSMFAMFPCFNRFNSSFUDSFUser Plane ServicesUPFTCP OptSecurityService Based APIsLife Cycle MgmtActive InventoryDe
8、ployValidateScaleCLAMPBare Metal OSVMWareIstioCisco Cloud Native Architecture for Mobile Core BRKSPG-204014 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveCloud Native Application Architecture/Micro ServicesApplication ServicesApplication ServicesProtocol Load Balancer Se
9、rvicesProtocol Load Balancer ServicesMetal LB HTTP Load BalancerGTP-CGTP-URest EndpointPFCP EndpointIKEv2/IPsec(LI)SMF AccessPolicy SvcCharging SvcUPF ManagerHSMF AccessPolicy SvcCharging SvcUPF ManagerNode ManagerEvent Exposure State Management ServicesState Management ServicesID DatabaseChrg DBSes
10、sion LookupPDU Contexts DBPolicy DBTimer SvcPFCP Session DBEvent Expo DBNF DBDiskMemory/TMPFS/5G DBSCTP Dynamic Discovery of application containers Protocol proxy and/or termination,e.g.,Diameter,GTP,HTTP2 Core application/business logic Varying degrees of Microservice granularity Native scale out a
11、nd upgrade Stateless services State separation layer Supports different data storage technologies in memory caches to full fledge DBs Scale out technologiesBRKSPG-204015 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveCEE pod list(Cisco Specific)”Common Execution Environme
12、nt”combines all the applications and services that are used by all network functions(such as logging,alerting,collecting of statistics etc.)Output on right is derived from command“kubectl get pods-n cee-global o wide”Pods marked with“*”in the node column run on all nodes(shortened here for visibilit
13、y)NAME READY NODE alert-logger-74446c8fd6-9krdt 1/1 oam-2 alertmanager-0 1/1 oam-2 alertmanager-1 1/1 oam-3 alertmanager-2 1/1 oam-1 BRKSPG-204016 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveVerify Status NSSF,AMFroot198:/conf#kubectl get pods-n nssf-o wideNAME READY S
14、TATUS RESTARTS AGE IP NODEactivemq-0 1/1 Running 0 3d 10.42.0.73 worker2root198:/conf#kubectl get pods-n amf-o wideNAME READY STATUS RESTARTS AGE IP NODEamf-amf-documentation-documentation-5fbb577548-srddh 1/1 Running 0 2d 10.43.128.120 worker6amf-amf-pats-executor-6bf4d7bc4d-gncfb 1/1 Running 0 2d
15、10.33.0.59 worker1amf-amf-pats-repo-ff988f847-7nd2b 1/1 Running 0Ensure to look for status Pendingmaster1:$kubectl get pod-A-o wide|grep-i pendingBRKSPG-204017 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSession Establishment between SMF&UPFlocalPOD7-UP#show sx peers W
16、ednesday April 24 16:30:18 EDT 2019+-Node Type:-CPLANE ()-UPLANE|+-Peer Mode:()-Active ()-Standby|+-Association ()-Idle ()-Initiated|State:()-Associated ()-Releasing|()-Released Recovery|Current Max Peer vvvvvv Group Name Node ID Peer ID Timestamp v Sessions Sessions State -CAAND 5 ingress 198.18.13
17、4.13 33554434 2019-04-24:15:57:10 1 0 0 ACTIVE Total Peers:1localPOD7-UP#BRKSPG-204018 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveInterface Specific Error codessmf-rest-ep logs for smf-ims:|Interface n11|Count Error Code Transaction Log|175 404 N11N1N2MessageTransferR
18、eq(19)Received N1N2 response error-status code:404|54 403 N11N1N2MessageTransferReq(19)Received N1N2 response error-status code:403|5 404 N11EbiAssignmentReq(22)Received Assign Ebi Response error-status code:404Interface n10|Count Error Code Transaction Log|1843 404 N10UnsubscribeForNotificationReq(
19、222)Received Unsubscribe-to-Notification response error-status code:404|895 404 N10SubscriptionFetchReq(36)Received sm subscription response error-status code:404|288 404 N10DeregistrationRequest(45)Received deregistration response error-status code:404|6 500 N10DeregistrationRequest(45)Received der
20、egistration response error-status code:500|6 500 N10RegistrationRequest(33)Received registration response error-status code:500Interface n40|Count Error Code Transaction Log|289 404 N40ChargingDataReq(63)Received Charging Data Response error-response status code:404|221 410 N40ChargingDataReq(63)Rec
21、eived Charging Data Response error-response status code:410Interface n7|Count Error Code Transaction Log|5 404 N7SmPolicyDeleteReq(54)Received sm policy control delete error-response status code:404|BRKSPG-204019 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSMF IMS Logs
22、4445 Error Message:Session not found 4318 ERROR smf-service.smf-app.messageprocessor Timer EventId=0,Timer Type=UnknownTimer 1702 Error Message:403:Key not found in indexing1702 ERROR MasterBlueprint.go:426 infra.transaction.core Error deleting session DatastoreDelete 403:Key not found in indexing 1
23、665 ERROR SessionTimer.go:157 smf-service.smf-app.gen RemoveTimer:Unable to Delete timer type 11 but has valid handle 1289 ERROR smf-service.smf-app.udm UDM Subscription Fetch Failure|1289 ERROR smf-service.smf-app.sgw UDM Subscription Fetch FailureBRKSPG-204020 2023 Cisco and/or its affiliates.All
24、rights reserved.Cisco Public#CiscoLiveKubernetes-Check all the namespace createdroot198:#kubectl get nsNAME STATUS AGEamf Active 3dbase Active 203dcnee Active 3ddefault Active 206dhelm Active 105dkube-public Active 206dkube-system Active 206dnrf Active 3dnssf Active 3dpcf Active 3dsmf Active 3dBRKSP
25、G-204021Where is 5G Network Broken?2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveApproach to Troubleshooting Blame GameFirst thing to know is what is brokenLogically look for issues as a stack Mobile or IPHW and SW defectsLine of sightRadioMobile coreIP TransportBRKSPG-2
26、04023 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveApproach to Troubleshooting Ask the questionsUE 5G SoC?Handset/Device 5G capability NSA,SA?4G CP and 5G UP Inline CUPSApps PAS,PCFThrough put issues Data leak NR side/Xhual/5G Core BRKSPG-204024 2023 Cisco and/or its af
27、filiates.All rights reserved.Cisco Public#CiscoLiveMEC in 5G Content,Latency,Thruput?5G nodes are CNFs!Some MEC nodes will be cloud-native as wellEdge DC platform will have to accommodate both VNFs and CNFsBRKSPG-204025 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive5G Co
28、re Issues Think of APIs,Kubernetes?end points,tls not matching,version mismatchRadio Access Network(RAN)User Equipment(UE)User Plane Function UPFGatewayGateway Control PlaneSMF Mobility Management AMFSubscriber Information UDM/UDR/AUSFPolicy and ChargingPCFCentral database that contains user-related
29、 and subscription related informationManages Session states and authenticates and tracks a user across the networkPolicy enforcement and flow-based chargingThe gateway anchors the data session,manages QoS,provides deep packet inspection and IP address allocation for the UE.The gateway is split into
30、a control plane and user plane function.Enabling the User plane to be deployed remotely from the control planeIP Packets to/from UEsUPFUser Plane FunctionSMFSession Management FunctionAMFAccess&Mobility FunctionAUSFAuthentication Server FunctionUDMUser Data ManagementUDRUser Data RepositoryPCFPolicy
31、 Control FunctionBRKSPG-204026 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveInfrastructureResources Apps-VM based vs Kubernetes allocation-Kubernetes automation match with App infrastructure synergyLook for issues TopicAccessibility VM vs Kubernetes 100s of logsBRKSPG-2
32、04027 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive5G Private Networks troubleshoot from left to right Full Private Full Private DeploymentDeploymentLocal or SPLocal or SPSpectrumgNodeBEnterprise LAN5G CNFs5G CNFsAMFAMFSMFSMFUPFUPFPCFPCFUDMUDMxxFxxFEdge Router&FWMgmt&Or
33、chMgmt&OrchPublic,Public,Private or Private or SP CloudSP CloudHybrid Cloud Hybrid Cloud Private DeploymentPrivate DeploymentLocal or SPLocal or SPSpectrumgNodeBEnterprise LANEDGE EDGE PoDPoDAMFAMFSMFSMFUPFUPFPCFPCFUDMUDMEdge Router&FWMgmt&OrchyyFyyFPublic,Public,Private or Private or SP CloudSP Clo
34、udMacros Slice Macros Slice DeploymentDeploymentSPSPSpectrumgNodeBNSSFNSSFUDMUDMAMFAMFEnterprise Traffic“Enterprise”Enterprise”SliceSlicePublic“Consumer”Public“Consumer”SliceSliceSMFSMFUPFUPFPCFPCFSMFSMFUPFUPFPCFPCFBRKSPG-204028 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#Cisco
35、Live5G SA and 5G NSA Components to look for issues NSA is for eMBB,SA is for uLL,IOT GSMA Option 2 GSMA Option 2 4G 4G CoreCoreGSMA Option 1 GSMA Option 1 Standalone LTE Standalone LTE Under EPCUnder EPCGSMA Option 3 GSMA Option 3 Non Standalone Non Standalone(NSA)LTE&5G NR(NSA)LTE&5G NR under EPCun
36、der EPCeNodeBeNodeBgNodeBStandalone(SA)5G Standalone(SA)5G NR under 5GCNR under 5GCgNodeBMultiple PathsDevice must support 4G and 5G radio in NSA mode.4G used to“attach”and bring up bearer.REQUIRES both 4G and 5G spectrum/radios4G 4G CoreCore5G 5G CoreCoreBRKSPG-204029 2023 Cisco and/or its affiliat
37、es.All rights reserved.Cisco Public#CiscoLiveQoS FrameworkFlow based QoS,instead of bearer basedBRKSPG-204030 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveService Classification and ProtectionService Classification and Quality of ServiceService Classification and Qualit
38、y of ServiceoCU plane traffic requirements preserved?oEnsuring Timing service always received best latency and jitter?oProtecting against traffic bursts and spikes?oGuarantee quality of service to all other traffics?U-Plane/Converged traffic C-PlaneMgnt/OOBCSRTimingOAMAccessPre-AggAggregationCoreUPF
39、CUDURURAN SliceTransport Service level SliceTransport SliceVLAN or IPVLAN+IP+PortVLAN+IP+Port+Service QCI/DSCPService convergence and RoutingService convergence and RoutingoAllowing traffic convergence?oDo we have Resiliency and RedundancyoFast Convergence with TI-LFA tested and working?oTraffic ste
40、ering for flexible workload deployment validated?Slice GSlice RBRKSPG-204031 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive5G Network Slicing Recall QoS ID Low Latency SliceDisjointness SliceBest Effort SliceCentral OfficeDatacenter DomainUnifiedUnified underlayunderlay
41、and overlay networks and overlay networks withwith Segment Segment RoutingRoutingMetro and Core Network DomainEnd to End Cross Domain Orchestration and Service AssuranceEnd to End Cross Domain Orchestration and Service AssuranceBRKSPG-204032IP Transport Segment Routing 2023 Cisco and/or its affiliat
42、es.All rights reserved.Cisco Public#CiscoLiveNetwork issues as a Programed FabricREST/APIAccessCoreIGP with SR Extensions(TI-LFA)IGP with SR Extensions(TI-LFA)IGP with SR Extensions(TI-LFA)Transport:Segment-Routing with TI-LFAEdgeBGP-LSBGP-LSREST/APINC/YangTelemetryPCEPNC/YangPCEPTelemetryPath Compu
43、te ElementApplicationsNetwork Services Orchestrator(NSO)Segment Routing TransportEVPN Based ServicesController Based ForwardingDevice and Services OnboardingData Collection&AnalyticsAutomationApp.Driven N/W and UsecasesServices:BGP-L3VPN/L2VPN(EVPN)BRKSPG-204034 2023 Cisco and/or its affiliates.All
44、rights reserved.Cisco Public#CiscoLiveSegment Routing Any source routing issues?Evolve MPLS with Segment Routing SeattleNew-YorkBerlinMexicoMadridTorontoLondonSegment RoutingMEXMADBERMADBERBER1.A unique and global luggage tag is attached to the luggage with the list of stops to the final destination
45、2.At each stop,the luggage is simply routed to the next hop listed on the luggage tagPath can be controlledSimple and scalableRESULT:Mission Route the luggage to Berlin via Mexico and MadridBRKSPG-204035 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSegment Routing Techn
46、ology OverviewPrefix SID(Node SID)Adjacency SIDGlobally SignificantLocally SignificantUnidirectional60036006240424034240352404524010Segment=InstructionsInstructions such as go to node N using the shortest pathBRKSPG-204036 2023 Cisco and/or its affiliates.All rights
47、reserved.Cisco Public#CiscoLiveSegment ID ConstructConfigured under IGP Routing ProtocolRequires:Enabling SR&Configuring Prefix-SIDConfigure“Absolute Value”or“Index”Optional:Configure SR-Global-Block(SRGB).Default 16000 23999(higher in newer versions)SRGB&Index advertised using IGPResult:No LDP Need
48、ed for label distributionSRGBIndexSIDBRKSPG-204037 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSegment Routing Programming The Path60036006240424034240352404524010Reached”RED”Go To”RED”RED=SID-List:24034
49、012;INT=”x”BRKSPG-204038 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveCrosswork Network ControllerLifeline to troubleshoot CCisco NSO+Core FunctionPacks Crosswork Data GatewayCrosswork Optimization EngineModelModel-based based Service&Service&Device Device ProvisioningP
50、rovisioningReal Time Network Real Time Network OptimizationOptimizationActive Topology&InventoryCrosswork Common UI&APIService Service InventoryInventoryServiceService-Oriented Transport Provisioning(SROriented Transport Provisioning(SR-TE)TE)Bandwidth OptimizationBandwidth OptimizationService Provi
51、sioning for L3VPN and L2VPNService Provisioning for L3VPN and L2VPNTopology&InventoryTopology&InventoryReal time network optimization Real time network optimization to meet SLAto meet SLAUse CasesMultivendorMulti-domain Physical and VirtualPath Computation Path Computation and Programmingand Program
52、mingSR-PCEData CollectionData CollectionCrosswork Network ControllerCrosswork Network ControllerExtended for Network SlicingBRKSPG-204039 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveSegment Routing Underlay and EVPN OverlayNG RANNRsLTE-APWi-FiSlice SelectionNG C-Plane
53、FunctionNG-XNG Policy ControlCharging/BillingNG-GxNG-CHNG Subscriber Data Management12ABC3DEF4GHI5JKL6MNO7PQRS8TUV9WXYZ*0#Si gn al St re ngt hResidentialAccessNG U-Plane Function(s)Hot SpotThingsNG-6a/pNG-GiService Capability ExposureIP ServicesVASVAS VirtualizationCPU E2E OrchestrationOtherHetNet R
54、AN&cRANNetwork Slice Selection FunctionNG Lawful InterceptNB-IoTSDNLogical Network Slicing FunctionsTransport:Segment-RoutingServices:BGP-L3VPN/L2VPN(EVPN)Controller/OrchestrationBRKSPG-204040 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveMPLS Control and Forwarding Oper
55、ation with Segment RoutingPE1PE2IGPPE1PE2ServicesIPv4IPv6IPv4 VPNIPv6 VPNVPWSVPLSPacket TransportLDPMPLS ForwardingRSVPBGPStaticIS-ISOSPFNo changes to control or forwarding planeIGP or BGP label distribution for IPv4 and IPv6.Forwarding plane remains the sameMP-BGPBRKSPG-204041 2023 Cisco and/or its
56、 affiliates.All rights reserved.Cisco Public#CiscoLiveIGP-SR/TI-LFA/SR-LDP Configuration issuesrouter isis 1address-family ipv4 unicastmetric-style widesegment-routing mpls!interface Loopback0address-family ipv4 unicastprefix-sid index 1router ospf 1router-id 1.1.1.1segment-routing mplssegment-routi
57、ng forwarding mplsarea 0interface Loopback0passive enableprefix-sid index 1router isis 1interface GigabitEthernet0/0/0/2address-family ipv4 unicastfast-reroute per-prefixfast-reroute per-prefix ti-lfarouter ospf 1segment-routing mplssegment-routing sr-preferrouter ospf 1fast-reroute per-prefixfast-r
58、eroute per-prefix ti-lfarouter isis 1address-family ipv4 unicastsegment-routing mpls sr-preferIGP-SRTI-LFASR/LDP Co-existenceLDP-SR migrationBRKSPG-204042 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveWhat is EVPNEVPN family introduces next generation solutions for Ether
59、net servicesBGP control-plane for Ethernet Segment and MAC distribution learning over MPLS or VXLAN data-planeSame principles and operational experience as in IP VPNsNo use of Pseudo wires Uses MP2P tunnels for unicastMulti-destination frame delivery via ingress replication(via MP2P tunnels)or LSMMu
60、lti-vendor solutionsEVPN-VPWSP2PMultipointEVPNPBB-EVPNEVPNRFC 7432RFC 7432RFC 7623draft-ietf-bess-evpn-vpwsBRKSPG-204043 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveEthernet VPNNext generation solution for Ethernet multipoint(E-LAN)servicesPEs run Multi-Protocol BGP to
61、 advertise&learn Customer MAC addresses(C-MACs)over CoreSame operational principles of L3VPNLearning on PE Access Circuits via data-plane transparent learningNo pseudowire full-mesh requiredUnicast:use MP2P tunnels Multicast:use ingress replication over MP2P tunnels or use LSM Standardized at IETF R
62、FC 7432HighlightsPE1PE2PE3PE4CE1C-MAC:M1CE3C-MAC:M3VID 100SMAC:M1DMAC:F.F.FBGP MAC adv.RouteEVPN NLRIMAC M1 via PE1Data-plane address learning from AccessControl-plane address advertisement/learning over CoreBRKSPG-204044 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveBGP
63、 Ethernet VPNRP/0/RSP0/CPU0:router#show evpn evi vpn-id 2001 neighborNeighbor IP vpn-id-20.20.20.20 2001 30.30.30.30 2001 Verify the BGP L2VPN EVPN summary.RP/0/RSP0/CPU0:router#show bgp l2vpn evpn summary.Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd20.20.20.20 0 200 216739 2298
64、71 200781341 0 0 3d00h 348032 30.30.30.30 0 200 6462962 4208831 200781341 10 0 2d22h 35750 VerificationPE1PE2PE3PE4CE1C-MAC:M1CE3C-MAC:M3VID 100SMAC:M1DMAC:F.F.FBGP MAC adv.RouteEVPN NLRIMAC M1 via PE1Data-plane address learning from AccessControl-plane address advertisement/learning over CoreBRKSPG
65、-204045 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveEVPN-Components Ethernet SegmentRepresents a site connected to one or more PEsUniquely identified by a 10-byte global Ethernet Segment Identifier(ESI)Could be a single device or an entire networkSingle-Homed Device(SH
66、D)Multi-Homed Device(MHD)Single-Homed Network(SHN)Multi-Homed Network(MHN)BGP RoutesEVPN and PBB-EVPN define a single new BGP NLRI used to carry all EVPN routesNLRI has a new SAFI(70)Routes serve control plane purposes,including:MAC/IP address reachabilityMAC mass withdrawalSplit-Horizon label adv.A
67、liasingMulticast endpoint discoveryRedundancy group discoveryDesignated forwarder electionEVPN Instance(EVI)EVI spans all PEs participating in an EVPNMAC-VRF:A VRF table for MACs on a PEEncompass one or more bridge-domains,depending on service interface typePort-basedVLAN-based(shown above)VLAN-bund
68、lingVLAN aware bundling(NEW)BGP Route AttributesNew BGP extended communities definedExpand information carried in BGP routes,including:MAC address movesC-MAC flush notificationRedundancy modeMAC/IP bindings of a GWSplit-horizon label encodingPEBDBDMAC VRFMAC VRFSHDMHDESI1ESI2Extended CommunitiesESI
69、MPLS LabelES-ImportMAC MobilityDefault GatewayRouters MACRoute Types1 Ethernet Auto-Discovery(AD)Route2 MAC Advertisement RouteRoute3 Inclusive Multicast Route4 Ethernet Segment Route(5)IP Prefix Advertisement RoutePE1PE2CE1CE2L2 and L3 in the same instance!BRKSPG-204046 2023 Cisco and/or its affili
70、ates.All rights reserved.Cisco Public#CiscoLivePrefix-SID 16004NP-flag=0,E-flag=01234MPLS Data Plane Operations push labelPushSwapPayloadPayload16004Segment 16004PopPayload16004Payload-RP/0/0/CPU0:Node1#show cef 1.1.1.4/321.1.1.4/32,version 277,internal 0 x4004001 0 x0(ptr 0 xacce39a4)1,0 x0(0 xaccd
71、e760),0 x450(0 xacd8b8)local adjacency 10.0.0.2Prefix Len 32,traffic index 0,precedence n/a,priority 1via 99.1.2.2,GigabitEthernet0/0/0/0,5 dependencies,weight 0,class 0 flags 0 x0path-idx 0 NHID 0 x0 0 xacbb3bf0 0 x0next hop 99.1.2.2local adjacencylocal label 16004labels imposed 16004FIB entry remo
72、te prefix Pwith prefix-SID Noperation :push Negress interface:oif spt(N)BRKSPG-204047 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveVerifying IP Forwarding(global table)RP/0/0/CPU0:xrvr-1#show cef 1.1.1.2/321.1.1.2/32,version 652,internal 0 x4004001 0 x0(ptr 0 xacca7ba4)
73、2,0 x0(0 xacca27a8),0 x450(0 xacfd1c10)Updated Jan 28 09:00:55.333 local adjacency 99.1.3.3Prefix Len 32,traffic index 0,precedence n/a,priority 1via 99.1.3.3,GigabitEthernet0/0/0/0,8 dependencies,weight 0,class 0 flags 0 x0path-idx 0 NHID 0 x0 0 xacbbaeac 0 x0next hop 99.1.3.3local adjacencylocal l
74、abel 16002 labels imposed 16002via 99.1.5.5,GigabitEthernet0/0/0/1,8 dependencies,weight 0,class 0 flags 0 x0path-idx 1 NHID 0 x0 0 xacbbac54 0 x0next hop 99.1.5.5local adjacencylocal label 16002 labels imposed 160022 paths(ECMP)Global prefixLabel stack:Prefix-SIDPush label stack:Prefix-SIDBRKSPG-20
75、4048 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveVerifying IP Forwarding(VRF RED)RP/0/0/CPU0:xrvr-1#show cef vrf RED 10.0.0.0/3010.0.0.0/30,version 27,internal 0 x14004001 0 x0(ptr 0 xacca79a4)1,0 x0(0 x0),0 x410(0 xacd3372c)Updated Jan 27 10:05:33.906Prefix Len 30,tra
76、ffic index 0,precedence n/a,priority 3via 1.1.1.2,5 dependencies,recursive flags 0 x6000path-idx 0 NHID 0 x0 0 xacfc0e24 0 x0next hop VRF-default,table-0 xe0000000next hop 1.1.1.2 via 16002/0/21next hop 99.1.3.3/32 Gi0/0/0/0 labels imposed 16002 90001next hop 99.1.6.6/32 Gi0/0/0/1 labels imposed 160
77、02 900012 paths(ECMP)Push label stack:Prefix-SID to egress PE,BGP VPN labelBGP nexthop,egress PEVPN prefix(VRF RED)BRKSPG-204049 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveVerifying MPLS ForwardingRP/0/0/CPU0:xrvr-3#show mpls forwardingLocal Outgoing Prefix Outgoing N
78、ext Hop Bytes Label Label or ID Interface Switched -16001 16001 SR Pfx(idx 1)Gi0/0/0/0 99.2.3.2 0 16002 Exp-Null-v4 SR Pfx(idx 2)Gi0/0/0/0 99.2.3.2 0 16004 Pop SR Pfx(idx 4)Gi0/0/0/1 99.3.4.4 0 16005 16005 SR Pfx(idx 5)Gi0/0/0/1 99.3.4.4 0 16010 16010 SR Pfx(idx 10)Gi0/0/0/0 99.2.3.2 0 16010 SR Pfx(
79、idx 10)Gi0/0/0/1 99.3.4.4 0 24032 Pop SR Adj(idx 1)Gi0/0/0/0 99.2.3.20 24034 Pop SR Adj(idx 3)Gi0/0/0/1 99.3.4.40 prefix-SIDs of remote nodes3245Gi0/0/0/0Gi0/0/0/1110Node n advertises prefix-SID 16000+nadjacency-SIDsBRKSPG-204050 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#Cisc
80、oLiveVerifying MPLS ForwardingRP/0/0/CPU0:xrvr-3#show mpls forwardingLocal Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched -16001 16001 SR Pfx(idx 1)Gi0/0/0/0 99.2.3.2 0 16002 Exp-Null-v4 SR Pfx(idx 2)Gi0/0/0/0 99.2.3.2 0 16004 Pop SR Pfx(idx 4)Gi0/0/0/1 99.3.4.4 0 16005
81、 16005 SR Pfx(idx 5)Gi0/0/0/1 99.3.4.4 0 16010 16010 SR Pfx(idx 10)Gi0/0/0/0 99.2.3.2 0 16010 SR Pfx(idx 10)Gi0/0/0/1 99.3.4.4 0 24032 Pop SR Adj(idx 1)Gi0/0/0/0 99.2.3.20 24034 Pop SR Adj(idx 3)Gi0/0/0/1 99.3.4.40 Remote prefix-SIDNeighbor prefix-SID PHP onRemote prefix-SIDs ECMP3245Gi0/0/0/0Gi0/0/
82、0/1110Neighbor prefix-SID Explicit-NullNode n advertises prefix-SID 16000+nBRKSPG-204051 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveVerifying IS-IS DatabaseRP/0/0/CPU0:xrvr-1#show isis database verbose xrvr-1IS-IS 1(Level-2)Link State DatabaseLSPID LSP Seq Num LSP Che
83、cksumLSP HoldtimeATT/P/OLxrvr-1.00-00 *0 x00000073 0 x4eba 1161 0/0/0Area Address:49.0001NLPID:0 xccNLPID:0 x8eMT:Standard(IPv4 Unicast)MT:IPv6 Unicast0/0/0Hostname:xrvr-1IP Address:1.1.1.1IPv6 Address:2001:1:1:1:1Router Cap:1.1.1.1,D:0,S:0Segment Routing:I:1 V:1,SRGB Base:16000 Range:8000Single SRG
84、B for both IPv4 and IPv6I:1 IPv4;V:1 IPv6Label range 16,000 23,999Two topologies:IPv4 and IPv6SID index 11.1.1.11.1.1.21.1.1.41.1.1.6DISBRKSPG-204052 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveVerifying OSPF DatabaseRP/0/0/CPU0:xrvr-1#show ospf database self-originate
85、 originateOSPF Router with ID(1.1.1.1)(Process ID 1)Router Link States(Area 0)Link ID ADV Router Age Seq#Checksum Link count1.1.1.1 1.1.1.1 13 0 x8000000b 0 x00b7ba 4Type-10 Opaque Link Area Link States(Area 0)Link ID ADV Router Age Seq#Checksum Opaque ID4.0.0.0 1.1.1.1 1085 0 x80000003 0 x000a66 07
86、.0.0.1 1.1.1.1 1085 0 x80000003 0 x00e1b2 18.0.0.4 1.1.1.1 823 0 x80000003 0 x0042c0 48.0.0.7 1.1.1.1 13 0 x80000009 0 x0030f4 7Area-scoped(Type10)Opaque LSAsOpaque LSAs for Segment RoutingSID index 11.1.1.11.1.1.21.1.1.51.1.1.3DR1.1.1.4Router Information Opaque LSABRKSPG-204053O-RUCell Site#1O-DUO-
87、DUFar Edge DC#1T-GMPLC SplitterMGNSSO-DUMT-TSCT-TSCCell Site#2T-GMMGNSSMPLC SplitterMMSSSST-TSCT-TSCT-BCvDUvDUFar Edge DC#2PLC SplittervDUT-TSCMMSSSST-TSCT-TSCT-BCCell Site#3T-GMMGNSSMMidahaul/BackhaulT-BCT-BCT-BCCell Site#4T-BCSMPLC SplitterO-RUT-TSCO-RUT-TSCO-RUT-TSCN9K-C93180YC-FX3N9K-C93180YC-FX
88、3N9K-C93180YC-FX3N9K-C93180YC-FX3MPLC splitter between cell site and Far Edge DCPLC splitter between cell site and Far Edge DCIssues with ACI Leaf delivering clock to O-DUs and O-RUs54Debugging Case studies 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveRCAsMPLS L3 connec
89、tivity to some cell sites when a core network link broke MPLS L3 connectivity to some cell sites when a core network link broke downdown-Service was restored after issuing clear mpls ldp neighbor*.NCSNCS-5508 5508-config SR policy on NSO print error config SR policy on NSO print error Policy Config
90、issueFallback from SRFallback from SR-Policy to Native SR after RPFO Policy to Native SR after RPFO DefectDefectMicro Services Micro Services-abnormal Micro-service memory usage-The Workaround to restart the rest-ep was already applied,and the container-memory-usage was cleared.Throughput issue in 5
91、G Throughput issue in 5G-Suspecting issue is due to QOS Data&Control plane Buffer exhaust-Qos buffer enhancement with different buffer optionsACI|Stale Route found in ACI|ACI|Stale Route found in ACI|Route do not exist in ACI but is seen receiving from ACI from external site-defect-Issue got resolve
92、d after upgrading Border Leaf to versionBRKSPG-204056 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveRCAs5G AMF 5G AMF-Three pods in pending state Three pods in pending state-Issue recovered after restart of kubectl,no issues on kubernetes settings5G SA/AMF De5G SA/AMF De
93、-registration call flow registration call flow-registrationregistration-request fails request fails Stop sending Http2 go awayUDM peer is not getting selected properly as per the static UDM peer is not getting selected properly as per the static configurationconfiguration-restart of the rest-ep endp
94、oint that display the problem G SA:Call Drop G SA:Call Drop-SMF Not Initiating Dedicated Bearer During SMF Not Initiating Dedicated Bearer During EPSFB EPSFB-DefectBad 5G site UE speed is around 80Mbps and good site is around Bad 5G site UE speed is around 80Mbps and good site is around 800Mbps 800M
95、bps IP Transport issue BRKSPG-204057Summary 2023 Cisco and/or its affiliates.All rights reserved.Cisco PublicKey TakeawaysTroubleshooting 5G involvesNRMobile CorePDUCloudIP RoutingAppsCisco support BRKSPG-204059 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveJune 4|2:00 p
96、mTECSPGTECSPG-24322432New Adventures in Wireless:The Journey of WiFi6 and Private 5G Networks for the EnterpriseJune 5|8:30 amBRKSPGBRKSPG-20422042Architecting Private 5G for resiliency,security,and enterprise network convergenceJune 5|10:30 amBRKSPMBRKSPM-10061006The 5G System as a Spectrum Managem
97、ent SolutionJune 7|2:30 pmPSOGENPSOGEN-10331033Unlock business outcomes from connectivity with a Private 5G solutionStartStartCisco Private 5G Learning Map60BRKSPG-2040June 5,|8:00 amBRKSECBRKSEC-20852085Architecting Enterprise Security in a Wi-Fi plus Private 5G WorldJune 5|11:00 amBRKENSBRKENS-295
98、02950Is your Enterprise Network Ready for P5G June 8|09:30 amBRKSPGBRKSPG-204420445G Use Cases Flight Line of the Future and Smart Warehouse June 6|3:00 pmBRKEWNBRKEWN-20302030WiFi6 and Private 5G for the Enterprise a Better Together JourneyJune 8|1:00 pmBRKGENBRKGEN-20012001Cisco P5G-A Robust and S
99、ecure ArchitectureFinishFinishJune 8|01:00 pmIBOSPGIBOSPG-20072007Getting Started with Private 5GJune 7|4:00 pmBRKSPGBRKSPG-30043004Monolithic or Polylithic packet cores?The case for specialized use-case-based mobile packet coresJune 5|11:30 amPSOSPGPSOSPG-10021002Leading Your Digital Transformation
100、 with Cisco Private 5G Network Offer 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveJune 4|9:00 amTECIOTTECIOT-25842584Designing IoT Wireless NetworksJune 5|1:00 pmBRKSPGBRKSPG-20632063Design,Deploy and Manage Transport Slicing using SDN Controller and AssuranceJune 5|1:0
101、0 pmBRKARCBRKARC-20942094Hiking the Band Canyon with 5G:New Use Cases,New Business Outcomes June 6|10:30 amBRKSPGBRKSPG-23152315Cloud-Ready Converged SDN TransportStartStartCisco 5G Learning Map61BRKSPG-2040June 5,|8:30 amBRKNWTBRKNWT-22032203Automation-first Approach to Network Infrastructure Moder
102、nization for 5G&BeyondJune 5|2:30 pmBRKSPGBRKSPG-10021002Dont Just Connect,Grow your IoT Business with Cisco IoT Cellular Connectivity ManagementJune 6|2:30 pmIBOSPMIBOSPM-203020305G Transport Design Considerations Combining Onsite and Cloud-Based DeploymentsJune 7|10:30 amBRKSPGBRKSPG-21332133Evolu
103、tion of the Transport Network Architecture in the Context of 5G and Open RANJune 6|4:00 pmBRKSPMBRKSPM-20272027Holistic Security in 5G DeploymentsJune 6|1:00 pmBRKSPGBRKSPG-24012401Cisco Secure Edge Protection Protecting the 5G Edge against DDoS AttacksJune 5|3:00 pmBRKIOTBRKIOT-11261126Connecting M
104、oving Assets with Cisco IoT Solutions June 8|8:30 amBRKSPGBRKSPG-30503050Synchronizing 5G Mobile Networks 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveJune 8|10:30 amBRKNWTBRKNWT-23012301DevNetOps Automation Approach to Network Infrastructure Modernization for 5G and Be
105、yondJune 8|1:00 pmBRKMERBRKMER-20012001Postcards from the 5G Edge:Meraki Cellular GatewaysCisco 5G Learning Map62BRKSPG-2040June 8,|11:00 amBRKSPGBRKSPG-20402040Troubleshooting 5G ArchitecturesFinishFinishJune 8|9:30 amIBOSPGIBOSPG-20062006DISH Wireless,Worlds first 5G Network with a Hybrid Cloud 20
106、23 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLiveFill out your session surveys!Attendees who fill out a minimum of four session surveys and the overall event survey will get Cisco Live-branded socks(while supplies last)!63BRKSPG-2040These points help you get on the leaderboar
107、d and increase your chances of winning daily and grand prizesAttendees will also earn 100 points in the Cisco Live Game for every survey completed.2023 Cisco and/or its affiliates.All rights reserved.Cisco PublicContinue your educationVisit the Cisco Showcase for related demosBook your one-on-oneMee
108、t the Engineer meetingAttend the interactive education with DevNet,Capture the Flag,and Walk-in LabsVisit the On-Demand Library for more sessions at www.CiscoL you#CiscoLive 2023 Cisco and/or its affiliates.All rights reserved.Cisco Public#CiscoLive66Gamify your Cisco Live experience!Get points for
109、attending this session!Get points for attending this session!Open the Cisco Events App.Click on Cisco Live Challenge in the side menu.Click on View Your Badges at the top.Click the+at the bottom of the screen and scan the QR code:How:123466 2023 Cisco and/or its affiliates.All rights reserved.Cisco PublicBRKSPG-2040#CiscoLive