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1、交换机配置实例udpShortforUDPisUserDatagramProtocol,ChinesenameistheUserdatapacketProtocol,theOSIrefereneemodelisakindofconnectionlesstransportlayerProtocolthatprovidessimpletransaction-orientedunreliableinformationservice・ItistheformalspecificationofUDPfortheIETFRFC768.directoryUserpacketprotocolIntrodu
2、ctiontotheTheuseofUDPTheUDPheaderSeveralfeaturesoftheUDPprotocolChemistryofUDPUDPvsTCPTheapplicationoftheUDPprotocolUDPprogramming1,thestepstowritetheUDPServerprogramUclpserv.CprogramcontentRunthesampleprogramRuntheUDPClientapplicationUserpacketprotocolIntroductiontotheTheuseofUDPTheUDPheaderSeve
3、ralfeaturesoftheUDPprotocolChemistryofUDPUDPvsTCPTheapplicationoftheUDPprotocolUDPprogrammingWritethesteps2oftheUDPServerprogramandtheudpserv.cprogramtoruntheUDPClientprogramtoedittheuserpacketprotocolUDPisanunconnectedtransportlayerprotocolintheISOreferencemodelthatprovidessimple,unreliablemessa
4、gingservicesfortransactions.TheUDPprotocolisbasicallyaninterfacefortheIPprotocolandtheupperlayerprotoco1.TheUDPprotocolappliestomultipleapplicationsrunningonthesamedeviceseparately.EdittheprofileThefullnameoftheUDPprotocolistheuserpacketprotocol,whichisusedinthenetworkasaTCPprotocolfordealingwith
5、UDPPackets・IntheOSImodel,layer4,thetransportlayer,isontheupperlayeroftheIPprotocoLUDPhasnopacketgroup,theassemblyandnotprioritizethedisadvantagesofthepacket,thatistosay,whenamessagesentisnotclearwhetherthecompletesafetytoarrive・UDPisusedtosupportnetworkapplicationsthatneedtotransferdatabetweencom
6、puters・Numerousclient/servermodelnetworkapplications,includingthenetworkvideoconferencesystem,needtousetheUDPprotoco1.UDPprotocolsincearrivalisalreadyinuseformanyyears,althoughitsoriginallusterhasbeenovershadowedbysomesimilaragreements,buteventoday,theUDPisstillaverypracticalandfeasiblenetworktra
7、nsportlayerprotocoLAswiththeknownTCP(transportcontrolprotocol)protocol,theUDPprotocolisdirectlyatthetopoftheIP(Internetprotocol)protoco1.UndertheOSI(opensysteminterconnection)referencemodel,bothUDPandTCParetransport-la
