CCNA培训 12第十一章应用帧中继实现广域网连接

©1999,CiscoSystems,Inc.14-1第十一章应用帧中继实现广域网连接©1999,CiscoSystems,Inc.—14-2通过本章的学习，您应该掌握以下内容：•了解FrameRelay工作过程•配置FrameRelay•配置FrameRelay的子端口•查看FrameRelay信息本章目标©1999,CiscoSystems,Inc.—14-3FrameRelay概述•使用虚电路进行连接•提供面向对象的服务FrameRelayworkshere.DCEorFrameRelaySwitchCSU/DSU©1999,CiscoSystems,Inc.—14-4FrameRelay栈OSI参考模型FrameRelayPhysicalPresentationSessionTransportNetworkDataLinkApplicationEIA/TIA-232,EIA/TIA-449,V.35,X.21,EIA/TIA-530FrameRelayIP/IPX/AppleTalk,etc.©1999,CiscoSystems,Inc.—14-5FrameRelay术语LocalAccessLoop=T1LocalAccessLoop=64kbpsLocalAccessLoop=64kbpsDLCI:400PVCDLCI:500LMI100=Active400=ActiveDLCI:200DLCI:100PVC©1999,CiscoSystems,Inc.—14-6CSU/DSUFrameRelay地址映射•从提供商那里得到本地的DLCI号•建立目的地址和本地DLCI之间的映射关系DLCI:500PVC10.1.1.1InverseARPorFrameRelaymapIP(10.1.1.1)FrameRelayDLCI(500)©1999,CiscoSystems,Inc.—14-7FrameRelay信号Cisco路由器支持三种LMI标准:•Cisco•ANSIT1.617AnnexD•ITU-TQ.933AnnexADLCI:400PVCKeepaliveCSU/DSUDLCI:500PVC10.1.1.1xLMI500=Active400=Inactive©1999,CiscoSystems,Inc.—14-8FrameRelay的反转ARP协议和LMI工作FrameRelayCloud1DLCI=100DLCI=400172.168.5.5172.168.5.7©1999,CiscoSystems,Inc.—14-9FrameRelay的反转ARP协议和LMI工作2StatusInquiry2StatusInquiryFrameRelayCloud1DLCI=100DLCI=400172.168.5.5172.168.5.7©1999,CiscoSystems,Inc.—14-10FrameRelay的反转ARP协议和LMI工作3LocalDLCI100=Active4LocalDLCI400=Active2StatusInquiry2StatusInquiryFrameRelayCloud1DLCI=100DLCI=4003172.168.5.5172.168.5.7©1999,CiscoSystems,Inc.—14-11FrameRelay的反转ARP协议和LMI工作4Hello,Iam172.168.5.5.3LocalDLCI100=Active4LocalDLCI400=Active2StatusInquiry2StatusInquiryFrameRelayCloud1DLCI=100DLCI=4003172.168.5.5172.168.5.7©1999,CiscoSystems,Inc.—14-12FrameRelay的反转ARP协议和LMI工作Hello,Iam172.168.5.7.45FrameRelayMap172.168.5.5DLCI400ActiveFrameRelayCloudDLCI=100DLCI=400FrameRelayMap172.168.5.7DLCI100Active5172.168.5.5172.168.5.7©1999,CiscoSystems,Inc.—14-13FrameRelay的反转ARP协议和LMI工作Hello,Iam172.168.5.7.45FrameRelayMap172.168.5.5DLCI400ActiveFrameRelayCloudDLCI=100DLCI=400FrameRelayMap172.168.5.7DLCI100Active5Hello,Iam172.168.5.5.6172.168.5.5172.168.5.7©1999,CiscoSystems,Inc.—14-14FrameRelay的反转ARP协议和LMI工作KeepalivesKeepalivesHello,Iam172.168.5.7.45FrameRelayMap172.168.5.5DLCI400ActiveFrameRelayCloudDLCI=100DLCI=400FrameRelayMap172.168.5.7DLCI100Active5Hello,Iam172.168.5.5.677172.168.5.5172.168.5.7©1999,CiscoSystems,Inc.—14-15Rel.11.2RouterRel.10.3RouterinterfaceSerial1ipaddress10.16.0.1255.255.255.0encapsulationframe-relaybandwidth64interfaceSerial1ipaddress10.16.0.2255.255.255.0encapsulationframe-relaybandwidth64frame-relaylmi-typeansiHQBranch配置FrameRelay©1999,CiscoSystems,Inc.—14-16反转ARP•缺省情况下是激活的•在配置输出信息中看不出来Rel.11.2RouterRel.10.3RouterHQinterfaceSerial1ipaddress10.16.0.1255.255.255.0encapsulationframe-relaybandwidth64interfaceSerial1ipaddress10.16.0.2255.255.255.0encapsulationframe-relaybandwidth64frame-relaylmi-typeansiBranch配置FrameRelay©1999,CiscoSystems,Inc.—14-17DLCI=110IPaddress=10.16.0.1/24p1r1DLCI=100IPaddress=10.16.0.2/24interfaceSerial1ipaddress10.16.0.1255.255.255.0encapsulationframe-relaybandwidth64frame-relaymapip10.16.0.2110broadcastHQBranch配置静态的FrameRelay映射©1999,CiscoSystems,Inc.—14-18查看FrameRelay信息显示协议、DLCI、和LMI的相关信息Router#showinterfaces0Serial0isup,lineprotocolisupHardwareisHD64570Internetaddressis10.140.1.2/24MTU1500bytes,BW1544Kbit,DLY20000usec,rely255/255,load1/255EncapsulationFRAME-RELAY,loopbacknotset,keepaliveset(10sec)LMIenqsent19,LMIstatrecvd20,LMIupdrecvd0,DTELMIupLMIenqrecvd0,LMIstatsent0,LMIupdsent0LMIDLCI1023LMItypeisCISCOframerelayDTEFRSVCdisabled,LAPFstatedownBroadcastqueue0/64,broadcastssent/dropped8/0,interfacebroadcasts5Lastinput00:00:02,output00:00:02,outputhangneverLastclearingofshowinterfacecountersneverQueueingstrategy:fifoOutputqueue0/40,0drops;inputqueue0/75,0dropsOutputomitted©1999,CiscoSystems,Inc.—14-19显示LMI信息Router#showframe-relaylmiLMIStatisticsforinterfaceSerial0(FrameRelayDTE)LMITYPE=CISCOInvalidUnnumberedinfo0InvalidProtDisc0InvaliddummyCallRef0InvalidMsgType0InvalidStatusMessage0InvalidLockShift0InvalidInformationID0InvalidReportIELen0InvalidReportRequest0InvalidKeepIELen0NumStatusEnq.Sent113100NumStatusmsgsRcvd113100NumUpdateStatusRcvd0NumStatusTimeouts0查看FrameRelay信息©1999,CiscoSystems,Inc.—14-20显示PVC数据通讯信息查看FrameRelay信息Router#showframe-relaypvc100PVCStatisticsforinterfaceSerial0(FrameRelayDTE)DLCI=100,DLCIUSAGE=LOCAL,PVCSTATUS=ACTIVE,INTERFACE=Serial0inputpkts28outputpkts10inbytes8398outbytes1198droppedpkts0inFECNpkts0inBECNpkts0outFECNpkts0outBECNpkts0inDEpkts0outDEpkts0outbcastpkts10outbcastbytes1198pvccreatetime00:03:46,lasttimepvcstatuschanged00:03:47©1999,CiscoSystems,Inc.—14-21显示路由信息Router#showframe-relaymapSerial0(up):ip10.140.1.1dlci100(0x64,0x1840),dynamic,broadcast,,statusdefined,active查看FrameRelay信息©