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1Chapter7EIGRPOSPF2ÆEIGRPÆEIGRPÆOSPFÆOSPF3ÆEIGRP(EnhancedIGRP)IGRP(distancevector)(linkstate)EIGRP4EIGRP()ÆEIGRPCisco(AdvancedDistanceVectorProtocol)5ÆEIGRPDUAL(DiffusingUpdateAlgorithm)DUALEIGRP()6EIGRP()ÆEIGRPÆEIGRPIPIPXAppleTalk7EIGRP()ÆRouteRedistribution5Tomake(IGRPtoEIGRP)migrationsimple,CiscocreatedafeatureofEIGRPcalledautomaticredistribution.8EIGRP()ÆRouteRedistribution(cont.)5BothIGRPandEIGRPhavetobeconfiguredonthesamerouterattheborderbetweentwoprotocols,andtheybothusethesameASnumber.9EIGRP()ExampleAutomaticRedistributionBetweenIGRPandEIGRP10ÆEIGRPEIGRP()5EIGRP(NeighborTable)(TopologyTable)(RoutingTable)11ÆEIGRP()EIGRP()5(NeighborTable)35(TopologyTable)312ÆEIGRP()EIGRP()5(RoutingTable)3SuccessorFeasibleSuccessor13ÆEIGRP()EIGRP()5()3SuccessorFeasibleSuccessor14ÆEIGRP()EIGRP()5EIGRP333315ÆEIGRP()EIGRP()3(BuildingtheNeighborTable)6EIGRPHellopackets16ÆEIGRP()EIGRP()3(Discoveringroutes)6Hellopacketsp.322~417EIGRP()EIGRP()3()nRouterR1Hellopacketsrouters18EIGRP()EIGRP()3()oHellopacketsroutersroutinginformation19EIGRP()EIGRP()3()pR1routinginformationACK20EIGRP()EIGRP()3()qR1ACKroutersTopologyTable21EIGRP()EIGRP()3()\TopologyTableR1routinginformationrouters22EIGRP()EIGRP()3()]routersroutinginformationACK23EIGRP()6EIGRPHellopacketsT15WAN603()24ÆEIGRP()EIGRP()3(Choosingroutes)6EIGRP25EIGRP()26ÆEIGRP()EIGRP()3()6R1NetworkAR3R2R4276EIGRP(cost)256[(10,000,000/)+]EIGRP()ÆEIGRP()3()28EIGRPEIGRP()295#1D#2#35#246,021,376#320,307,200EIGRP()30()5#3#1DEIGRP()31EIGRPEIGRP()32ÆEIGRP()EIGRP()3(Maintainingroutes)6costp.326~733EIGRP()34EIGRP&IGRPSimilaritiesEIGRP()35EIGRP&IGRPDifferencesEIGRP()36ÆEIGRPÆEIGRPÆOSPFÆOSPF37OSPFÆOSPF(OpenShortestPathFirst)1980IEFTSPF38OSPF()ComparingLink-State&DistanceVectorProtocols39ÆOSPF(Link-StateProtocol)RIPOSPF(LinkStateAdvertisement,LSA)OSPF()40Æ(cost)OSPF()41OSPF()ÆOSPF5OSPF(AutonomousSystem,AS)5AS(Area)RouterHost42OSPF()OSPF43OSPF()ÆOSPF()5R4Area1ospfbackboneareaR6Area2ospfbackbonearea(AreaBorderRouter)44OSPF()ÆOSPF()5R5(AutonomousBorderRouter)45OSPF()ÆOSPF5OSPF333346OSPF()ÆOSPF()3(EstablishingRouteAdjacencies)6Hello476HelloMulticast(224.0.0.5)p.336OSPF()ÆOSPF()3()486RouterIDOSPF()6Hello/DeadIntervals6Neighbors6AreaID6RouterPriority6DRIPAddress6BDRIPAddress6AuthenticationPassword496R1p.337~83()OSPF()nDownstateoInitstatepTwo-waystateqElectDRandBDR\Helloupdate503()OSPF()1.DownstateR1R1R1Hellopacket513()OSPF()2.Initstaterouters(R2,R3,andR4)HellopacketR1AdjacenciesDatabaseHellopacketR1523()OSPF()3.1Two-waystateR1routersHellopacketAdjacenciesDatabase533()OSPF()3.2R1R2R1R3R1R4544.1DR(DesignatedRouter)BDR(BackupDesignatedRouter)3()OSPF()554.2R2priorityDRR4priorityBDRDRBDRDRBDR3()OSPF()564.3DRBDRDRBDR3()OSPF()573()OSPF()DRBDRDRBDR583()OSPF()5.HelloupdatesDRBDRHelloupdates59OSPF()nExstartstateoExchangestatepLoadingstateqFullstate3(DiscoveringRoute)p.339~340ÆOSPF()60OSPF()nExstartstate:DRBDRroutersExstartstateDRHello3()ÆOSPF()61OSPF()oExchangestate:DRrouters3()ÆOSPF()62OSPF()pLoadingstate:DRroutersDD(DatabaseDescription)LSACK(Link-stateACK)3()ÆOSPF()63OSPF()qFullstate:routersFullstate3()ÆOSPF()64OSPF()ÆOSPF()3(ChoosingRoute)6routersFullstatep.341655100,000,000/OSPF()3()66Cost=220OSPF()3()67OSPFOSPF()68OSPF()ÆOSPF()3(MaintainingRoutingInformation)6Routersp.342~369OSPF()ÆOSPF()3()nRouterMulticast224.0.0.6LSU(LinkStateUpdate)DRBDR70OSPF()ÆOSPF()3()oDRLSUMulticast224.0.0.5routers71OSPF()ÆOSPF()3()proutersDRLSU72OSPF()ÆOSPF()3()qrouters(LinkStateDatabase)73InteriorIPRoutingProtocolsCompared74ÆEIGRPÆEIGRPÆOSPFÆOSPF75EIGRPWhatisthemaximumentriesnumberintheroutingtableforthesamedestinationofEIGRPnetwork?Ans:ca.2b.4c.6d.8e.Noneoftheabove76EIGRP()WhatisthedefaultentriesnumberintheroutingtableforthesamedestinationofEIGRPnetwork?Ans:ba.2b.4c.6d.8e.Noneoftheabove77EIGRP()WhichoneofthefollowingmulticastaddressesisusedbyEIGRP?Ans:da.224.0.0.5b.224.0.0.6c.224.0.0.9d.224.0.0.10e.Noneoftheabove78EIGRP()Whichoneoffollowingroutingprotocolswillyouusedtosupportmultipleroutedprotocols?Ans:da.RIPb.IGRPc.OSPFd.EIGRPe.Noneoftheabove79ÆEIGRPÆEIGRPÆOSPFÆOSPF80OSPFWhichthreeoffollowingtableswillOSPFroutermaintain?Ans:a,c,da.Routingtableb.Hellotablec.Topologicaldatabased.Adjacenciesdatabasee.Distance-vectortable81HowdoesOSPFcomputethedistanceofcost?Ans:ba.106/bandwidthb.108/bandwidthc.bandwidth/108d.bandwidth/106e.NoneoftheaboveOSPF()82WhichoneofthefollowingmulticastaddresseswillrouterusetoinformDRwhenthenetworktopologychanged?Ans:ba.224.0.0.5b.224.0.0.6c.224.0.0.9d.224.0.0.10e.NoneoftheaboveOSPF()83WhichoneofthefollowingmulticastaddresswillDRreceivechangeandfloodtheLSUtootherroutersontheOSPFnetwork?Ans:aa.224.0.0.5b.224.0.0.6c.224.0.0.9d.224.0.0.10OSPF()84EIGRP()Whichthreeoffollowingroutingprotocolssupportroutesummarization?Ans:c,d,ea.RIPb.IGRPc.OSPFd.EIGRPe.RIP-285Whichofthefollowingprotocolsisconsideredtouselink-statelogic?Ans:ca.RIPb.IGRPc.OSPFd.EIGRPe.NoneoftheaboveQuestions86QuestionsWhichofthefollowinginteriorprotocolssupportVLSM?Ans:c,da.RIPb.IGRPc.OSPFd.EIGRP87QuestionsQ12:Whichofthefollowingprotocolsareconsideredtob