Kurose全套配套课件计算机网络自顶向下方法原书第7版ppt及其他教辅资料 Chapter_4_V7.01.ppt

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1、ComputerNetworking:ATopDownApproachAnoteontheuseofthesePowerpointslides:We’remakingtheseslidesfreelyavailabletoall(faculty,students,readers).They’reinPowerPointformsoyouseetheanimations;andcanadd,modify,anddeleteslides(includingthisone)andslidecontenttosuityourneeds.Theyobviouslyrepresent

2、alotofworkonourpart.Inreturnforuse,weonlyaskthefollowing:Ifyouusetheseslides(e.g.,inaclass)thatyoumentiontheirsource(afterall,we’dlikepeopletouseourbook!)Ifyoupostanyslidesonawwwsite,thatyounotethattheyareadaptedfrom(orperhapsidenticalto)ourslides,andnoteourcopyrightofthismaterial.Thanksa

3、ndenjoy!JFK/KWRAllmaterialcopyright1996-2016J.FKuroseandK.W.Ross,AllRightsReserved7theditionJimKurose,KeithRossPearson/AddisonWesleyApril2016Chapter4NetworkLayer:TheDataPlane4-1NetworkLayer:DataPlane4.1OverviewofNetworklayerdataplanecontrolplane4.2What’sinsidearouter4.3IP:InternetProtoc

4、oldatagramformatfragmentationIPv4addressingnetworkaddresstranslationIPv64.4GeneralizedForwardandSDNmatchactionOpenFlowexamplesofmatch-plus-actioninactionChapter4:outline4-2NetworkLayer:DataPlaneChapter4:networklayerchaptergoals:understandprinciplesbehindnetworklayerservices,focusingondata

5、plane:networklayerservicemodelsforwardingversusroutinghowarouterworksgeneralizedforwardinginstantiation,implementationintheInternet4-3NetworkLayer:DataPlaneNetworklayertransportsegmentfromsendingtoreceivinghostonsendingsideencapsulatessegmentsintodatagramsonreceivingside,deliverssegmentst

6、otransportlayernetworklayerprotocolsineveryhost,routerrouterexaminesheaderfieldsinallIPdatagramspassingthroughitapplicationtransportnetworkdatalinkphysicalapplicationtransportnetworkdatalinkphysicalnetworkdatalinkphysicalnetworkdatalinkphysicalnetworkdatalinkphysicalnetworkdatalinkphysica

7、lnetworkdatalinkphysicalnetworkdatalinkphysicalnetworkdatalinkphysicalnetworkdatalinkphysicalnetworkdatalinkphysicalnetworkdatalinkphysicalnetworkdatalinkphysical4-4NetworkLayer:DataPlaneTwokeynetwork-layerfunctionsnetwork-layerfunctions:forwarding:movepacketsfromro