2路由器广域网PPP封装配置

路由器广域网ppp封装配置一、实验目的.把握广域网HDLC封装配置.明白得DCE、DTE.明白得封装匹配二、应用环境.企业环境中异地的互连通常要通过第三方的网络，比如网通、电信等等，因此与局域网的配置不同.广域网通常需要付费、带宽比较有限、靠得住性相较局域网要低.PPP是一种比HDLC功能丰硕的广域网封装协议，支持身份认证、多链路捆绑等三、实验设备DCR-1702两台CR-V35MT一条CR-V35FC一条四、实验拓扑五、实验要求Router-A接口IP地址S1/1DCE五、实验要求Router-A接口IP地址S1/1DCE接口S1/0DTERouter-BIP地址六、实验步骤第一步Router-A的配置Router>enable！进入特权模式Router>enableRouter#config！进入全局配置模式Router_config#hostnameRouter-A！修改机械名Router-A_config#interfaces1/1！进入接口模式Router-A_config_s1/1#ipaddress!配置IP地址Router-A_config_s1/1#encapsulationPPP!封装PPP协议Router-Aconfigs1/1#physical-layerspeed64000!配置DCE时钟频率!按ctrl+z!按ctrl+z进入特权模!查看接口状态

!对端没有配置，因此协议是!查看DCE!查看IP地址Router—A_config_s1/1#"Z式第二步：查看配置Router-A#showinterfaces1/1Serial1/1isup,lineprotocolisdownDOWNMode=SyncDCESpeed=64000DTR=UP,DSR=UP,RTS=UP,CTS=DOWN,DCD=UPInterfaceaddressisMTU1500bytes,BW64kbit,DLY2000usec!查看封装协EncapsulationprototolPPP,linkcheckintervalis10sec!查看封装协OctetsReceived0,OctetsSent0FramesReceived0,FramesSent0,Link-checkFramesReceived0Link-checkFramesSent89,LoopBacktimes0FramesDiscarded0,UnknownProtocolsFramesReceived0,Sentfailuile0Link-checkTimeout0,QueueError0,LinkError0,60secondinputrate0bits/sec,0packets/sec!60secondoutputrate0bits/sec,0packets/sec!0packetsinput,0bytes,8unused_rx,0nobuffer0inputerrors,0CRC,0frame,0overrun,0ignored,0abort8packetsoutput,192bytes,0unused_tx,0underrunserror:0clock,0gracePowerQUICCSCCspecificerrors:00clock,0grace0recvallocbmblkfail0recvnobuffer0transmitterqueuefull0transmitterhwqueue_full第三步：Router-B第三步：Router-B的配置Router>enableRouter#configRouter_config#hostnameRouter-BRouter-B_config#interfaces1/0Router-B_config_s1/0#ipaddressRouter-B_config_s1/0#encapsulationPPPRouter-B_config_s1/0#noshutdownRouter—B_config_s1/0#"Z式！进入特权模式！进入全局配置模式！修改机械名！进入接口模式!配置IP地址!封装PPP协议!按ctrl+z进入特权模第四步：查看配置!查看接口状态!接口和协议查看DTE!查看!查看接口状态!接口和协议查看DTE!查看IP地址Serial1/0isup,lineprotocolisup都是upMode=SyncDTEDTR=UP,DSR=UP,RTS=UP,CTS=DOWN,DCD=UPInterfaceaddressisMTU1500bytes,BW64kbit,DLY2000usecEncapsulationprototolPPP,linkcheckintervalis10sec!查看封装协议OctetsReceived0,OctetsSent0FramesReceived0,FramesSent0,Link-checkFramesReceived0Link-checkFramesSent89,LoopBacktimes0FramesDiscarded0,UnknownProtocolsFramesReceived0,Sentfailuile0Link-checkTimeout0,QueueError0,LinkError0,60secondinputrate0bits/sec,0packets/sec!60secondoutputrate0bits/sec,0packets/sec!0packetsinput,0bytes,8unused_rx,0nobuffer0inputerrors,0CRC,0frame,0overrun,0ignored,0abort8packetsoutput,192bytes,0unused_tx,0underrunserror:PowerQUICCSCCspecificerrors:0recvallocbmblkfail0recvnobuffer0transmitterqueuefull0transmitterhwqueue_full第五步：测试连通性Router-A#pingPING56databytes---pingstatistics--5packetstransmitted,5packetsreceived,0%packetlossround-tripmin/avg/max=20/22/30ms七、注意事项和排错.注意查看接口状态，接口和协议都必需是UP.CR-V35FC所连的接口为DCE,CR-V35MT所连的接口为DTE.协议是DOWN，一般是封装不匹配、DCE时钟没有配置.接口是DOWN，一般是线缆故障.在实际工作中，DCE设备通常由效劳提供商配置，本实验是模拟环境八、配置序列路由器A的序列Router-A#showrunning-configBuildingconfiguration...Currentconfiguration:!!versionEservicetimestampslogdateservicetimestampsdebugdatenoservicepassword-encryption!hostnameRouter-A！查看机械名interfaceFastEthernet0/0!查看IP!查看IP地址noipdirected-broadcast<省略….>interfaceSerial1/1ipaddress!查看IP地址noipdirected-broadcastphysical-layerspeed64000!interfaceAsync0/0noipaddressnoipdirected-broadcast九、一起试探1.PPP与HDLC的区别是什么？十、课后练习请将A的封装改成frame-relay（帧中继），观看PING的结果十一、相关命令详解encapsulation利用encapsulation接口配置命令设置接口利用的封装协议。利用那个命令的no形式恢复缺省封装encapsulationencapsulation-type参数参数参数说明encapsulation-type封装类型，为下面的关键字之一：frame-relay一帧中继（用于串行接口）；hdlc一串行接口的HDLC协议，它提供HDLC的同步帧和检错功能而无窗口或重传机制；ppp—PPP（用于串行接口）；slip—SLIP（用于串行接口）；x25—（用于串行接口）；sdlc一串行接口的SDLC协议；缺省缺省值与接口的类型有关。例如，同步串行接口缺省为HDLC,异步接口和拨号接口缺省为PPP。命令模式接口配置态利用说明假假想同时支持多个封装，能够利用