攻城 bbs.vlan5.co #^_^ 歸原作者所 本資 試攻城 (技術(shù)+生活) 225809 DeployingMPLSwithNX-OSandNexus7000ArkadiyTechnicalMarketingNX-OSandNexus攻城

bbs.vlan5.co #^_^Session

歸原作者所 本資 試 ofthesession,theparticipantsMPLSonNX-OSandNexusUnderstandwhatnetworkdesignsaretodaywithMPLSonNX-OSandNexusUnderstandhowMPLSonNX-OScanhelpsolvemodernnetworkchallenges

ighs 2258097Cisco 攻城

bbs.vlan5.co #^_^SessionNon-

歸原作者所 本資 試ThissessiondoesnotDetailsonMPLSandrelatedtechnologiessuchas ,TE,6PE/6VPEDetailsonNX-OSsoftwareorNexus7000hardwarediscussionforMPLSonNX-

ighs 2258097Cisco 攻城

bbs.vlan5.co

#^_^ 歸原作者所 本資 試DriversandRequirementsforSystem

ighs 2258097Cisco DriversandRequirementsforSystem ?2013Ciscoand/orits Cisco Network

DriversandRequirementsforNextgenerationnetworkswillLayer3TrafficScalableL2 enterTraffic ?2013Ciscoand/orits Cisco NetworkVirtualizationisthe

DriversandRequirementsforGivingonephysicalnetworktheabilitytosupportmultiplevirtualEnd-user/customer -connectedtoadedicatednetwork(security,independentsetofpolicies,routingdecisions…)Maintainshierarchyandvirtualizesdevices,datapathsandAllowsforbetterutilizationofnetworkresourcesandIT

Merged

Virtual

Virtual

Virtual

?2013Ciscoand/oritsaffiliates.ll

Cisco MPLSin enterandSolutiontoBusiness

DriversandRequirementsforBusinessBusinessBusinessM6PEMergers/NetworkSharedHighPathEnsureIPv4addressIPv6readiness/

?2013Ciscoand/orits

Cisco 13攻城

bbs.vlan5.co #^_^ MPLSTechnology

aAtIngressClassify&PushPLabel(s) PLabelEdge

Inthe orswitchingForwardusinglabels(notIPaddress);labelindicatesAtEgress(LER)A

LabeldispositionLabelSwitchRouterorP(Provider) 0123456789012345678901234567890Label– EXP=EXP=ClassofService:3Bits;S=BottomofStack;TTL=Timeto

ighs 2258097Cisco 攻城

bbs.vlan5.co

#^_^ 歸原作者所 本資 試DriversandRequirementsforSystem

ighs 2258097Cisco 攻城

bbs.vlan5.co #^_^ Hardware

歸原作meq僅AllMPLSfunctionalitysupportedon riesI/OF1andF2e*modulessupportMPLSviaproxy-F2modulesdonotsupportN7K-M202CF- N7K-M206FQ-N7K-M224XP-*-SoftwaresupportinNX-OS

ighs 2258097Cisco 攻城

bbs.vlan5.co #^_^ Software

歸原作meq僅NX-OS5.2(1)SoftwareupgradeOnSupervisor1only,8GBRAMrequiredifmorethan2VDCsareconfiguredwith

ighs 2258097Cisco 攻城

bbs.vlan5.co

#^_^

歸原作meq僅 Enhanced MPLSMPLSwillbeenabledviaalicenseonaperchassisLicensestoenableMPLSinNX-++

ighs 2258097Cisco 攻城

bbs.vlan5.co

#^_^ 歸原作者所 本資 試DriversandRequirementsforSystem

ighs 2258097Cisco SupportedFeatures

s(unicast,multicast,s(unicast,multicast,IPv4,sand(EoMPLS,VPLS,MPLSNetworkMPLSMPLSMPLSOAM/CoreCoreMPLSMPLSSignalingandNetworkNetwork*-supportinNX-OS ?2013Ciscoand/orits Cisco InitialModularInstallfeature-set(defaultswitch(conf-t)#installfeature-setLimitper-VDCconfiguration(defaultVDC,switch(conf-t)#vdcswitch(conf-t)#noallowfeature-setEnablefeature-set(anyswitch(conf-t)#feature-setEnablefeature(anyswitch(conf-t)#featurempls<ldp|l3 |te>switch(conf-t)#featuremEnablesMPLSLayer3specificconfigurationsuchasRouteDistinguisher ?2013Ciscoand/orits Cisco DriversandRequirementsforSystemSoftwareLayer sandTrafficHighQualityofManagementand ?2013Ciscoand/orits Cisco SoftwareArchitecture–

RSVRSVLDOABGOSPFISIEIGRPRIP/statiL3UxUxRIMPLSMgULIOIMUFDSupervisorEngUFDKeNewMPLSKeNewMPLSComponentsRoutingComponentsForwardingComponentInfrastructureComponentFIB/LFIHHardwar ?2013Ciscoand/orits Cisco 攻城 bbs.vlan5.co #^_^ 歸原作者所OSPF/EIOSPF/EIURIB(U4RIBand

本資料bLLUx MPLUxMPLSMgRecursiveNextHopresolution Addition/storageofremoteMPLSlabelswithCarryIGProuteattributes(PE-CE)during

UF

I/OModuHardFI/OModuHardFB/LFswitch#showroutingipv434.141.1.1detailvrf34.141.1.0/24,ubest/mbest:*via34.34.34.34%default,[200/0],01:16:20,bgp-100,internal,tag300(mpls- MPLS[0]:Label=4688E=0TTL=0S=0( recursivenexthop:switch#showroutingipv62142:142:34:102::1:1detailvrfcandubest/mbest:1/0,ufdmin/update:*via::ffff:34.34.34.34%default:IPv4,[200/0],01:17:41,bgp-100,internal,tag300 recursivenexthop:::ffff:34.34.34.34/128MPLS[0]:Label=416E=0TTL=0S=0(

ighs.

2258097Cisco UnifiedLabelInformation

EIOSPF/EIOSPF/LUx MPLUxMPLSMgLocallabelallocationfordifferentMPLS , (v4/v6),labeled-Maintainslabelswitchingdatabasefordifferent

UF

I/OModuHardFI/OModuHardFB/LFSupportforgloballabelspacethatisuniqueperVDC(per-prefixUpdatesLFIBwithlabelforwardingLocalIGP LocalandoutgoingTEactiveandbackuplabelsforheadendsandswitch#showmplsswitchingIn- Out-LabelFECOut-Next- switch#showmplsswitchinglabelIn-

- ?2013Ciscoand/orits Cisco UnifiedLabelInformation

CoreIGP

Details(defaultinStatic

DynamicAll-HostPrefixStaticPer-Per-VRF(notDynamicPer-Per-Per-CE(not

AlwaysusedBGPIGPsummarizedDirect ?2013Ciscoand/orits Cisco ForwardingInformation

EIOSPF/EIOSPF/LUx MPLUxMPLSMgReceivesURIBrouteupdateswithoutgoingBGP(IPv4and )/staticroutes IGP/staticroutes+LDPProgramsIPv4/IPv6routesinthePasseslabelinformationtoLFIBfor

UF

I/OModuHardFI/OModuHardFB/LFswitch#showforwarding -1route20.1.2.2module

|Next- |

| Ethernet8/3.11PUSH216switch#showforwardingnext- rewrite 0022.557a.32c2 ?2013Ciscoand/orits Cisco LabelForwardingInformation

EIOSPF/EIOSPF/LUx MPLUxMPLSMgReceiveslabelupdatesfromULIB/URIB(viaMaintainsprefix/labeldatabasesforip-mpls,mpls-andmpls-ipProgramslabelforwardingentriesandnexthopinformationonI/OECMPsupportacrossIPandMPLS

UF

I/OModuHardFI/OModuHardFB/LFswitch#showforwardingmplslabel16mod

TableId

(Prefix/Tunnel

10.211.0.1Ethernet8/5.211switch#show

forwardingadjacencyrewrite 0001.0203.0447NO-OP ?2013Ciscoand/orits Cisco 攻城 bbs.vlan5.co #^_^ 歸原作者所OSPF/EIOSPF/EILKey

本資料bUx MPLUxMPLSMgExchangelabelHop-by-hopLSPsforinternal(IGP)Interfacewithothercomponentstoprogramlabelsfor

UF

I/OModuHardFI/OModuHardFB/LFSub-featureDetails(defaultsinLabelDownstreamUnsolicitedLabelLocallabelallocationfilteringSessionDirect,HAandGracefulRestart(RFCLDP-IGPsync(OSPF,IS-SessionAuto-config(forOSPFandIS-MD5

ighs.

2258097Cisco LabelDistributionProtocol

featuremplsldpinteth1/1mplsiprouterospf1mplsldp

LDPsupportedwithuptofirst4OSPF/IS-ISconfiguredinstancesinaVDC!MPLS/LDPrunningconfigurationandshowrunmplsshowmpls!Labelsadvertisedbyshowmplsldp!LDPneighborinformationshowmplsldpdiscoveryshowmplsldpneighbor ?2013Ciscoand/orits Cisco MPLSInfrastructure–SignalingandNX-OS–IOSFeature/NX-LDPGracefulLocalIGPlabelAllHostroutes(/32)Prefix-basedfilteringAllHostroutesPrefix-basedViewULIBshowmplsshowmplsconfmplslabelprotocol[ldpLDPisonlyMPLSOptiontoconfigureseparateforDerivedfrominterface*Defaultsin ?2013Ciscoand/orits Cisco DriversandRequirementsforSystemSoftwareLayer sandTrafficHighQualityofManagementand ?2013Ciscoand/orits Cisco Layer3IPv4andIPv6

MostwidelydeployedMPLSapplicationtoprovidescalablesegmentationforIPv4&IPv6trafficSupportsnetworkconsolidationandaccesstosharedservicesProvideIPv6connectivityovertheIPv4/MPLSL3

DCDC

VRFVRFVRFVRFVRFVRFVRFSeamlessIPv4toIPv6

Agg (L2/L3 ?2013Ciscoand/orits Cisco 攻城

bbs.vlan5.co #^_^ Layer3 andVRF-KeyComprehensivefeaturesetforVRF-liteand

歸原作者所

本資料bSub-featureRouYes–MPLSorVRF-RoutefilteringandPerVRFmaxrouimitinImport/exportPE-CEroutingOSPFv2siooppreventionSiteofOriginforEIGRPandDownBitforNote:MPLSlicenseisnotrequiredforVRF-lite

ighs.

2258097Cisco MPLSUnicastLayer Extranet

vrfcontextOrangerd65000:1!vrfcontextrd!vrfcontextrd

routerbgpaddress- v4router-idaddress-familyipv4neighbor118.8.20.164remote-as65000update-sourcel address- v4munityvrfaddress-familyipv4unicastredistributedirectroute-mapavrfaddress-familyipv4unicastredistributedirectroute-mapbvrfaddress-familyipv4unicastredistributedirectroute-mapc ?2013Ciscoand/orits Cisco Layer NX-OS–IOSNX-ipvrfvrf-rdroute-targetimportroute-targetexport!iproutevrfvrf-110.0.0.0255.0.0.0vrfcontextvrf-iproute10.0.0.0/8rdaddress-familyipv4route-targetimportroute-targetexportvrfdefinitionvrf-rdaddress-familyroute-targetimportroute-targetexport!iproutevrfvrf-110.0.0.0255.0.0.0intGigEthernet2/1.10encapsulationdot1q10vrfforwardingvrf-1!intGigEthernet2/2.10encapsulationdot1q11vrfforwardingvrf-1intEthernet2/1.10encapsulationdot1q10vrfmembervrf-1!intEthernet2/2.10encapsulationdot1q10vrfmembervrf-1 ?2013Ciscoand/orits Cisco BGPEnhancementsfor

Extensionsfor –UnicastIPv4andIPv6(6VPE),MulticastIPv4 NewAFs: v6(6VPE),IPv6labeled-unicastExtendedSub-featureDetails(defaultsinYes-16foriBGP,RouteYesforallHubandHAandGracefulRestart(RFC4724)PICCoreandEdgeMultipathNextHopTracking ?2013Ciscoand/orits Cisco BGPinNX-Auto-summaryisalwaysDonotusenetworkstatementtosummarize,useaggregate-addressIfnetworkstatementmatchesastaticroutetonull,MPLStraffictothatroutemaybedroppedswitch#showiproutevrfProd11.0.6.0/30,ubest/mbest:1/0,attached*via11.0.6.1,Eth1/13.100,[0/0],6w5d,11.0.7.0/30,ubest/mbest:1/0,*via11.0.7.1,Eth1/14.100,[0/0],6w5d,switch#showrunrouterbgpvrfaddress-familyipv4vrfcontextiproute11000/16 ?2013Ciscoand/orits Cisco Layer3 IETFdraft-

Multicastinter-connectivityfor VirtualizationofmulticastservicedeliveryemergingcloudControlPIMcontrolprotocolforcustomerroutesignalingBGPfordiscovery DataPacketsareencapsulatedinIP+GRE(p-

ABBAABB

CC ?2013Ciscoand/orits Cisco Layer3 Key

ForYourmVRFawareSub-featureDataandBGPmdFilteringandYes–per-client(PIM,MSDP,IGMP)configurablelimitonmulticastgroupsv1,v2andPE-PEPIMSSM,ASM,BiDirPE-CEPIMSSM,ASM,Management&m,mtrace, ?2013Ciscoand/orits Cisco Layer3 Featurestobeenabledandconfiguredfeaturebgp,featurepim,featurempls ,feature

featurevrf ippimrp-address10.10.1.2-list224.0mdtsourcemdtdefaultmdtdata232.2.2.0/24threshold10route-mapinterfaceloopbackippimsparse-routerbgpaddress-familyipv4neighbor1.1.1.1remote-as65000address-familyipv4mdtupdate-sourceloopback0

Optionalbut Otheroptions:Route-maptocustomer ?2013Ciscoand/orits Cisco Layer3 InteroperabilitywithearlierimplementationsnotsupportingBGPMDTswitch(config)#vrfcontextswitch(config-vrf)#nomdtenforce-bgp-mdt-safiDependonBGPMDTSAFIforauto-discoveryswitch(config-vrf)#nomdtenforce-bgp-mdt-safiMDTswitch(config)#vrfcontextswitch(config-vrf)#mdtmtu<576-65535>MTU*Defaultvalueisswitch(config-vrf)#mdtmtu ?2013Ciscoand/orits Cisco DriversandRequirementsforSystemSoftwareLayer sandTrafficHighQualityofManagementand ?2013Ciscoand/orits Cisco MPLSTrafficEngineeringProvideandguaranteeon-bandwidthforEnsurePathFastLink,NodeandPath

DCDC

MPLS EnsureSLAsfornew

/Access(L2/L3Moredetails:BRKMPL-2100-DeployingMPLSTraffic ?2013Ciscoand/orits Cisco MPLSTrafficSub-featureDetailsSub-featureDetails(defaultsinSupportedOSPFv2,IS-ISforTraffic→Auto-StaticroutePolicyBasedRoutingClassBasedTunnelSelectionForwardingAdjacencyFRRtriggers:BFD,LoS,AdminFRRprotection:Link,Node,RSSRandPathSelectionPathDynamic(CSPF),explicit,verbatim,loose-expansion,ACL-basedlinkRSVPextensionsfor ?2013Ciscoand/orits Cisco

ForYourMPLSTrafficFastReRoute(FRR)Event

PotentialtriggersforLinkAdminBFDtriggeredFRR(linkandnodeToachieve50msFRR,internalprocessmaintainsadatabaseofallMPLSenabledinterfacesinL3ASICdriverProcessinterfaceswithinterfaceandgeneratesFRReventononeofLabelforbackuptunnelisaddedonoffailedtunnel

?2013Ciscoand/orits Cisco MPLSTrafficMPLSTErequiresoneoftheIGPfeatures(OSPFv2orISIS)tobeenabled.Enablingfeaturemplstraffic-engwillautomaticallyenableotherrequiredcomponents:RSVP,OAM,MPLSMGR,ULIBEnablingTEswitch(config)#featuremplstraffic-Disabling/EnablingMPLSTEglobally(enabledbyswitch(config)#mplstraffic-engswitch(config-te)#[no]ConfiguringTEforswitch(config)#routerisisswitch(config-router)#mplstraffic-englevel-2switch(config-router)#mplstraffic-engrouter-idloopback0ConfiguringTEforOSPFswitch(config)#routerospfswitch(config-router)#mplstraffic-engareaswitch(config-router)#mplstraffic-engrouter-id ?2013Ciscoand/orits Cisco MPLSTrafficNX-OS–IOSNX-RSVPGracefulNX-TypeTEcommandsinconf-Global“mplstraffic-engconfiguration”submodeallTEglobalconfmplstraffic-engtunnelsipexplicit-path<y>confmplstraffic-engconfigurationipexplicitpathinttunneltunnelmodemplstraffic-iprsvpbandwidthinttunnel-te!tunnelshutdownbynomplstraffic-engbandwidth*Defaultsin ?2013Ciscoand/orits Cisco DriversandRequirementsforSystemSoftwareLayer sandTrafficHighQualityofManagementand ?2013Ciscoand/orits Cisco High

MPLSimplementationbuildsonNexus7000NX-OSHAIndustry’sfirstMPLSswitchtoimplementhit-lesssoftwareupgradewithNSF/SSOProtocolfastFastFailureDetectionFastFailure

ProcessSUPIS-IS- ?2013Ciscoand/orits Cisco SoftwareHighProtocolsandservicesutilizeseveralHANon-StopRouting(NSR)/statefulGracefulRestartPeriodicRefreshIS------StatefulmL3-- ?2013Ciscoand/orits Cisco ProtocolFastFastFailureDetectionwithmendedfastfailuredetectionAdvantagesofBFDvstuningper- oReducedcontrolplaneloadandlinkbandwidthSub-secondfailureStatefulrestart/ ossentfromI/O

ProtocolProtocolTE-TE-IS-Link

Default

Link msec ?2013Ciscoand/orits Cisco

Moredetails:NetworkFailureDriversandRequirementsforSystemSoftwareLayer sandTrafficHighQualityofManagementand ?2013Ciscoand/orits Cisco 攻城

bbs.vlan5.co #^_^QualityofServiceCustomerClassifyandprioritizetrafficflows(CoS,IPPrec,IPDSCP,IPACL,EXP)PreserveorremarktraffictraffictoenforceMPLSQoSKey

歸原作者所

本資料bCorePPipeClassification,MarkingandPolicingonMPLSEXPbits(inadditiontoCoS,IPPrec,IPDSCP,IPPipeAllfeaturesenablePipe,ShortPipeandmodeBasic support(CoS-basedper-queue

UniformUniformShortPipeMarking,Policing)

ighs.

2258097Cisco 56DefaultBehavior-IPtoUniformPreserveIPToSandcopytoEXPbasedonadefaultmap(top3Multiplelabels–allgetsameIngressandegressqueuing–CoS

PETop3PE

?2013Ciscoand/orits Cisco QualityofDefaultBehavior–MPLStoMPLS–non-TrustEXPintopmostlabelandpreserveatlabelImposeadditionalSecondlabelimposed–copyDSCP→Thirdorhigherlabelimposed–copytop-mostEXP→Ingressqueuing–EXP-Egressqueuing–CoS-

P

L:L: ?2013Ciscoand/orits Cisco QualityofDefaultBehavior–MPLStoMPLS–TrustEXPintopmostPoplabel–preserveEXPofexposedIngressqueuing–EXP-Egressqueuing–CoS-

L:

P

PE ?2013Ciscoand/orits Cisco QualityofDefaultBehavior–MPLSto

Pipe/ShortEgressCoS–copyfromIngressqueuing–EXP-Egressqueuing–EXP-

ShortIngressqueuing–EXP-basedorbasedifno ?2013Ciscoand/orits Cisco DriversandRequirementsforSystem ?2013Ciscoand/orits Cisco MPLSandKeyVDCVDCVDCVDCVDCVDCVDCVDCVDC8AllMPLSfeaturesareVDCEachVDCoperatesasseparateMPLSrouter(LERNointernalcommunicationbetweenMultiplelogicalP/PErouterscanbeEachVDChasindependentlabelspaceforprefix ,Note:per-VRF/aggregatelabels-globallysignificantforwholechassis,allothersarelocallysignificanttoVDC ?2013Ciscoand/orits Cisco MPLSandUse

Verticalconsolidation–layersofP/PE

Horizontalconsolidation–PE’sfromseveral

(VDC

POD POD(VDC

(VDC

(VDC

(VDC

(VDC

(VDC(VDC

(VDC ?2013Ciscoand/orits Cisco MPLSLayer sandNexus2000Fabric

LargescalePODconnectedtoLayer3portmodeonFEX(default)NX-OSFEXportL2interface/port-channelterminatedbyinL3interface/sub-interface/port-channelinConnectedandstaticroutesonlyincases(nodynamic er

X ?2013Ciscoand/orits Cisco MPLSLayer sandF-seriesI/O

F1/F2e*I/Omodules–chassisdesignwithMI/O

F2/F2eI/Omodules–VDCdesignwithVRF-

M

M

F2/F2e

VRF-VRF-

*-NX-OS6.2?2013Ciscoand/orits

Cisco MPLSLayer sand

MPLSonNexus7000–NochangeinL3uplinks,exceptnowareMPLSSVIsfordataVLANsarepart LDPbetween2SVIs(dedicatedVLAN)backuproutingacrossVPCpeer-

Layer3LDP

PPP ?2013Ciscoand/orits Cisco MPLSLayer sandL3interconnectforFabricPath

VPC+andnon-VPC+ sprovidingsecureinter-VLANroutingbetweendifferentcollapsedFabricPathDCsSpine/aggregationswitchesalsoasLayer3gatewaysandMPLS

Y

Y

LDPPOD PODDC1

POD PODDC2 ?2013Ciscoand/orits Cisco MPLSandFabricPathforMulti-tenancyandVLANCaseStudyforalargeEuropeanIT ?2013Ciscoand/orits Cisco DynamicRoutingProtocolandYoucanrunOSPFandBGPoverFabricPath,youcan’toverTheOSPFCEroutersCE-3andCE-4wereconfiguredwith“ipospfpriorityinterfaceconfigurationsotheydon’tparticipateinDR/BDRelectionFULLOSPFneighborshipsareformedwithbothCore1andswitch#shipospfNeighborDead110Trafficstillforwardedevenwhencrossingpeer-FabricPathdoesn’thavesamelimitationsas ?2013Ciscoand/orits Cisco MPLSLayer s,VDCsandCaseStudyforaU.S.SaaSCloud ?2013Ciscoand/orits Cisco MPLSLayer sandOTVEdgeDeviceasApplianceofPE

OTVControlUnicast(AdjacencyServer)- orMulticast- orOTVDataUnicast- orMulticast– orIfusing forOTV,ensureMDTMTUonswitch(config)#vrfcontextswitch(config-vrf)#mdtmtu<576-65535>MTU*Defaultvalueis!MTUforOTVcontrolpacketsswitch(config-vrf)#mdtmtu1476

LayerLayer

?2013Ciscoand/orits Cisco MPLSLayer sandOTVfor enterCasestudyforanEuropeanpharmaceutical ?2013Ciscoand/orits Cisco MPLSLayer –SecureMulti-

SecureSegmentationforHosted/

entersorCampusnetworksviasOneMPLSnetworkinfrastructurefor

Super

PMPLSPEboundaryinPODEoR/ToRaccess/aggregationlayerBelowMPLSL2orL3(VRF-litewithPE-DirectPE-PEorPE-P-PEScalingPODarchitecturewithoutoverheadusingFabric

PLayer-Layer-

Layer-Pod ?2013Ciscoand/orits Cisco

PodMPLSfor enterMulti-CaseStudyforanEuropeanbankingITservices ?2013Ciscoand/orits Cisco MPLSforCampusCaseStudyforanEuropean

CAT3750/

AccessCAT3750/ MPLSNexus

MPLSPEsCat6500(VDC

……(VDC

ASAService

(VDC(VDC

(VDC(VDC

ASAService

ollateral/ns340/ns517/ns224/eth

?2013Ciscoand/oritsaffiliates.

Cisco DriversandRequirementsforSystem ?2013Ciscoand/orits Cisco

MPLSisaproven,standardsbasedMPLSin enterorcampusNetworkconsolidationandServiceandpolicyMPLSonNX-OSandNexus7000FlexibilityandperformanceofNexus7000ProvenLayer3andMPLSHighAvailabilityofNX-IntegrationwithotheradvancedtechnologieslikeFabricPathand ?2013Ciscoand/orits Cisco RelatedCiscoLiveLondon2013BreakoutSessionBRKRST-NetworkFailureDeployingMPLSTrafficBRKDCT-DeployingVirtualPortChannelinNX-BRKARC-CiscoNexus7000SwitchBRKDCT-CiscoFabricPathTechnologyand ?2013Ciscoand/orits Cisco ?2013Ciscoand/orits BackupBGPPIConNX-OSandNexusBGPPrefixIndependentWhyPICCorelinkornodegoesIGPnoticesfailure,computes thstoOnPE3,IGPnotifiesBGPthatapathtoanext-hophas

BGPupdatesRIB/FIBforallaffectedBGP

3/8,NHNH…3/8,3/8,NHNH

… ?2013Ciscoand/orits

Cisco

3/8,NHNH…

攻城 bbs.vlan5.co #^_^ 歸原作者所BGPPrefixIndependentPIC

本資料bFromNX-OS5.2,RIB/FIB/BGPsupportSupportforAFs:IPv4, v6(6VPE),VirtualObjects(VOBJs)inFIBtrackRecursiveNextHops(RNH)andassociated labelsforBGPprefixesIGPreachabilitychangetoRNHresultsinsingleupdateofVOBJforallBGPResult:significantconvergenceNote:Per-VRFlabelallocationisrequiredin

ighs.

2258097Cisco

BGPPrefixIndependentWithoutPIC

Prfx4:Prfx3:

Prfx2:

Prfx0: Prfx0:1.1.1.1/32via10.1.1.1via via10.1.1.1label100via20.1.1.1label100

10.1.1.1label100

Prfx0:via10.1.1.1labelvia20.1.1.1label100

via20.1.1.1labelI/O Prfx1:via10.1