ISISv6&BGP 快速收敛调整

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1、6NETProject–May20031Thegoalofthissession?•LeveragetuningexperiencefromtheIPv4world(Noneedtore-inventthewheel)•Understandthetopologyandrespectivetuningcurrentlyimplementedon6NETtopology•Minimizeunexpectedandexpecteddowntime•UnderstandtheeffectofthetuningandproduceinitialIPv6BestPra

2、ctices6NETProject–May2003The6netLayout–14April2003NORDUnetDenmarkNorwayForskningsnettetUNINETTFinlandNTTUkernaSurfnetFUNETSwedenNORDUnet7200UnitedKingdomSwedenPOL-34CESnetTheNetherlandsFranceGermanyRenaterGreeceGRnetAustriaSwitchSwitzerlandItalyDFN6NETCOREATMLinkSTM16POSManualIPv6

3、TunnelGigabitEthernet(Trident)HungarnetACOnetGARRSTM1POS/ATM6NETProject–May2003STM1POS(overL2tunnel)E1CoretopologySEUpandrunningUKNLDEPLCZFRCHATHUITColtGRDeutscheTelekomTeliaSTM1L2ServiceNordicPlannednative6NETProject–May2003STM1links6NETProject–May20035Thethreepillarsofthe6netFas

4、tConvergenceTuning6NETProject–May20036NETProject–May20037Goal?•Enhancetheadministrativeshutdownprocedureofaninterface•MakeaPacket-over-Sonet(POS)interfacereactfasteronlink-downtriggers•Isolateinterfacetransitionstoasinglebox•CreatemoreawarenessonPOSerrors6NETProject–May2003Interfa

5、ceStabilityTuning•Makingtheremotepeerawarethatourinterfaceisadministrativelyshuttingdown:posais-shut•TuningPOSresponsivenesstowardscarrierdrops:carrier-delaymsec0(Note:16msecisagoodvaluetobeusedinoperationalenvironment)•Enablingofinterfacedampening:Dampening6NETProject–May2003Inte

6、rfaceStabilityTuning(Cont.)•ImprovePOSreportingfunctionality:posreportlrdiposreportlaisposreportprdiposreportpaisposreportslosposreportslofloggingbufferederrors(tocapturelinkevents)6NETProject–May20036NETProject–May200311Goal?•Designthetopologydatabasetobeassmallaspossible•Stabili

7、zethenetworkincaseanISISrouterisseeingtoomanytopologychanges•DecreasetheISIScommunicationoverhead6NETProject–May2003IGProuting:ISISUnitedKingdomSwedenTheNetherlandsGermanyFranceGreeceAustriaItalySwitzerlandSTM1POSSTM1TunnelL2-ISISNeighborship6NETProject–May2003ISISProcessDetails•L

8、2-onlyneighborshipwillbeutilized(