思科cisco解決方案sdn驅(qū)動(dòng)下的mpls技術(shù)演進(jìn)方向中文

歸原作者所有本資料只供試 資源 攻城 June,

：

歸原作者所有本資料只供試 資源 攻城11SegmentRouting 歸原作者所有本資料只供試 資源 攻城People→PeopleMachine→MachineSmarterBusinessProcesses

ApplicationAnywhere,AnytimeNewBreedofAppsand MassiveScalability

歸原作者所有本資料只供試 資源 攻城ServiceRichandMatureOperationalExperienceWidelyDeployedNetworkExpensiveandInefficienttoDeploy/OperateServiceCloudBasedServiceDeliveryandNetworkFunctionVirtualisationIP+Optical 歸原作者所有本資料只供試 資源 攻城

DCand

EmbracesSDNandNFVConceptsCentralizedControlEmbracesSDNandNFVConceptsCentralizedControlforNetworkOptimizationDynamicCloudBasedServiceDeliveryoverMPLSNetworks ticInterfacesandOrchestrationLeveragesprovenconceptsinIP/MPLSandOpticalTransportOperateswithexistinghardware Simplified ne–morescalable CentralisedcontrolforAdmissionControland Enginefornetworkoptimisationanddynamicservice 歸原作者所有本資料只供試 資源 攻城Multi-layerstatefulWANSegmentIP/MPLSandCloudIntegration

ControllernLight+

歸原作者所有本資料只供試 資源 攻城SegmentRouting–simplifiedcontrol morescalabledata orientatedservices

歸原作者所有本資料只供試 資源 攻城

ManagementandinformationexchangebetweenopticalandIPDynamicoptical G-MPLSUNIbetweenopticaland 思科互動(dòng)網(wǎng)絡(luò)主頁(yè) 思科中攻城 Benefit:60%savinginportsover5yearsvia思科互動(dòng)網(wǎng)絡(luò)主頁(yè) 思科中攻城 歸原作者所有本資料只供試 資源 攻城+1+1

B/Wbi-directionalassociatedLSP)+MPLSTP-

B/Wbi-directionalassociatedLSP)+MPLSTP-FlexLSPbringstransportorientatedservicestoIP/MPLSPredictableroute,guaranteedB/Wbi-directionalassociatedMPLS-TPOAMmonitoringLSPstatusanddriving servicesenabling思科互動(dòng)網(wǎng)絡(luò)主頁(yè) 思科中攻城 Benefit:20-60%savingfortransportservices思科互動(dòng)網(wǎng)絡(luò)主頁(yè) 思科中攻城 歸原作者所有本資料只供試 資源 攻城Nodalsegment:ashortest-pathtotherelatednode

NodalsegmenttoABA

NodalsegmenttoDCAdj CAdjacencysegment:ONMhopthroughthe ONMEmergenceof ess

NodalsegmenttoSimplification–labeldistributionviaIGP;noneedforLDPandScale–lessstateforrouterstomaintaintoCombinedwithWANcontrollerforAdmissionControlandoptimalpathBackwardcompatiblewithexisting攻城 Benefit:Simple,scalable, 歸原作者所有本資料只供試 資源 攻城 andTennant

L2

L2orL3cL2c

思科互動(dòng)網(wǎng)絡(luò)主頁(yè) 思科中攻城 Benefit:Interconnectivitybetween思科互動(dòng)網(wǎng)絡(luò)主頁(yè) 思科中攻城 歸原作者所有本資料只供試 資源 攻城 Service

ed

DC

Networkandcentreaware思科互動(dòng)網(wǎng)絡(luò)主頁(yè) 思科中t攻城 Benefit:Cloudbasedservicedelivery+思科互動(dòng)網(wǎng)絡(luò)主頁(yè) 思科中t攻城 歸原作者所有本資料只供試 資源 攻城22SegmentRouting 歸原作者所有本資料只供試 資源 攻城 歸原作者所有本資料只供試 資源 攻城NetworkwideLink LinkSDNbasedcentralized 歸原作者所有本資料只供試 資源 攻城10+50+ 300K+

1000G+IDC

歸原作者所有本資料只供試 資源 攻城

ElasticNGNElastic 歸原作者所有本資料只供試 資源 攻城RFC4655definedPCEArchitectureSection6.8discussedStatefulvs essRFC5440definedPCEPPCC-PCE;PCE-PCERouterasksPCEforTEpathinPCRreqPCErespondstorouterwithPCRepPCEassumedtobe Considerstopology,resourcesandTEstatewhencomputing PCEdoesnotknowororremembercomputedTEpaths,thustheyarenotconsideredwhennewpathsarecomputed 歸原作者所有本資料只供試 資源 攻城NeedPCEtoprogramdemandand cementinBandwidthDemandDefinednewfunctionsinsupportofstatefulPCEincludingcapabilities,LSPstatesync,LSPupdaterequest,LSPstatereportandLSPcontroldelegationPCCreatePCupdmessagewithremovebitdeletes 歸原作者所有本資料只供試 資源 攻城Introducestheabilityto“redistribute”anIGPtopologyintoaBGPRedistributiontakestheIGPLSDBastheinputRedistributionisNOTlimitedtothecontentofanAbilitytoextend/enrichtopologyAbilityto topologyAllowsover-the-toptopologyNoneedtoaccessIGPsfromexternaltopologyTopologyServers/SystemsareBGP-LSconsumers:PCE,NPS/ALTO,… ,securityandreliableTCPControliskeptbynetwork 歸原作者所有本資料只供試 資源 攻城LatestextensionstoISIS/OSPFallowtheadvertisementofnewDelay,BWandLossAllowIGPtocarryresourcesutilization/availabilityfroma“real”Goal:enhanceSPF/CSPF/xSPFtreecomputationwithadditionalNaturalextensiontothe4metricsofISIS(Default,Delay,Expense,BGP-LSisagnosticregardingIGPExtensionstoIGPsaredefactointegratedintoBGP- 歸原作者所有本資料只供試 資源 攻城 tformExistingCaridensoftwareNewCiscosoftware 歸原作者所有本資料只供試 資源 攻城Red:OFandonePKGreen:PCEP

CR

TE

CR

CR CR

歸原作者所有本資料只供試 資源 攻城33SegmentRouting 歸原作者所有本資料只供試 資源 攻城NodalsegmenttoABA

NodalsegmenttoCDCAdj ONMPONMNodalsegmenttoISISautomaticallybuildsandmaintainsNodal:ashortest-pathtotherelatedAdjacency:one-hopthroughtherelated 歸原作者所有本資料只供試 資源 攻城swapfor

swapfor

swapZfor popZA B C DABCDMMswapfor

NNswapfor

OOswapfor

PPpop

Apacketinjectedwithtoplabel65willreachOnlytwoIP-alikeconfigurationOperatorallocatesalabelblockforSegment[64,5000]isthe“SROperatorallocatesalabelfromtheSRregistrytoeachZisgivenlabel 歸原作者所有本資料只供試 資源 攻城PopABCDABCDZMNOPMNOPPop Pop

ApacketinjectedatnodeBwithlabel9003is throughdatalinkBCNodeautomaticallyallocatesalocallabelforeach–labeltakenoutsidetheSR 歸原作者所有本資料只供試 資源 攻城ODCBC’slinkstateLSPadvertisesLeafC/Cwithglobalnodallabel67AdjacencyCBwithlocallabel9001AdjacencyCDwithlocallabel9002AdjacencyCPwithlocallabelODCBSimpleOnesingle4-byteSegmentsub-Nodalsegment:sub-TLVattachedtoleafleafisAdjacencysegment:sub-TLVattachedtoadjacency 歸原作者所有本資料只供試 資源 攻城DA DAZNM NMPathiscomputedby potentiallywithhelpofcentralPathisencodedbythesourceinthepacketheaderasalabel apathisanorderedlistofEachhopalongthepathforwardsaccordingtoclassicMPLS 歸原作者所有本資料只供試 資源 攻城IP-basedFRRisguarantedinany2002,LFAFRRprojectatDirectedLFA(DLFA)isguaranteedwhenmetricsaresymetricNoextracomputation(RLFA)－DirectedSimplerepairnodesegmenttoPadjacencysegmentfromPto

toPnode 歸原作者所有本資料只供試 資源 攻城2GfromAtoZ

{66,68,

PathABCOPZisok.IaccounttheBW.ThenIsteerthetrafficonthispathThenetworkissimple,highly bleandresponsivetorapid 歸原作者所有本資料只供試 資源 攻城SRavoidsstateintheAsendstrafficwithClassicecmp“alaAsendstrafficwith[111,Packetgetsattractedinblue neandthenusesclassicecmp“alaIP”Asendstrafficwithvia Asendstrafficwithvia

SRavoidsenumeratingRSVP-TEtunnelsforeachECMPpaths 歸原作者所有本資料只供試 資源 攻城data:viaUS:cheapVoIP:viaRussia:lowCoS-basedTEwithIGPmetricsetsuchTokyotoRussia:viaTokyotoBrussels:viaRussiatoBrussels:viaDataandBrussels:pushthenodesegmentto

NodesegmenttoBrusselsNodesegmenttoRussiaVoIPandBrussels:pushtheanycastnodetoRussia,push 歸原作者所有本資料只供試 資源 攻城AnSRcorerouterscalesmuchthanwithRSVP-ThestateisnotintherouterbutintheN+Avs

N:#ofnodesintheA:#ofadjacenciesper3 3歸原作者所有本資料只供試 資源 攻城PCEknowstopologyandnode/adjsegmentIDsviaBGP-LSComputespaththatavoidscongestedlinks(basedonservicerequestPCEPextensionsneededtoprogramSRpath(labelstack)inrouter–SRpath(labelstackprependedtoeachpacket)NoRSVP-TEsignaling3 3歸原作者所有本資料只供試 資源 攻城NoMPLSsignalingorper-explicitpathstateinGuaranteedScalableMPLSTEsinceonlyedgesneedtobeprogrammedwithexplicitpathlabelstackTopologyflexibilityand–E.g.createredundant,disjointroutingtopologies,arbitrarydetoursawayfromtheSPT,distinctservicetopologies,predictableload-balancingschemes,etcCoexistencewithexistingMPLS neandsignalingLeveragesmaturelink-stateIGP;straightforwardtopushSRlabelstoSDNWANtform(StatefulPCE)viaBGP-LS3 3歸原作者所有本資料只供試 資源 攻城44SegmentRouting 歸原作者所有本資料只供試 資源 攻城Real-timeWANOrchestration+ NetworkFunctionVirtualizationwithRaaS(vCE/IP/OpticalIntegrationandOptimizationUnifiedMPLSTransport–Paths:SegmentRouting+WAN cement:WANFewerprotocols:SegmentReduced nestate:Segment攻城 歸原作者所有本資料只供試 資源 攻城EstimatedTCOSavingsof>50%throughoperational~30%bandwidthgainthroughcentralisedexplicitpathcontrolandeffectiveservice Estimated~30%+SavingswithFlexLSP

Cumul%Increm

Cumul%Base MLBS&MLR- MLBS&MLR-O

Base MLBS&MLR- MLBS&MLR-O~60%savinginIPoDWDMportsover5yearsthroughnLight+multi-layerWAN

歸原作者所有本資料只供試 資源 攻城 ytics WANController NetworkFunctionalVirtualization(vCE/vPE)IP Data PacketCore

IPInternetof RadioAccess攻城 歸原作者所有本資料只供試 資源 攻城CentralizedWANor