CCIE考试涉及常用命令(部分)：Ping (Normal)Ping (Extended,Privilege)TraceShow ip routeShow sessionShow lineClear line xWho X hostname R6line con 0 exec-timeout 0 0No ip domain-lookupNo exec-timeoutIp subnet-zeroLogin password (configured)Vty password (configured)Enable passwordNo logg console (logg console) or logg syn(line con 0)No logg buffer (logg buffer)Ip ClasslessXConfig a Router as a frame relay switchFrame-relay switchinginterface serial 1encapsulation frame-relayframe-relay intf dceframe-relay lmi-type ansiframe-relay route 102 interface s2 201 frame-relay route 103 interface s3 301 .Clockrate 64000(options)interface serial 2encapsulation frame-relayframe-relay intf dceframe-relay lmi-type ansiframe-relay route 201 interface s1 102 frame-relay route 203 interface s3 302 Clockrate 64000(options)RIP CommandsRouter ripip rip send v 1/ v 2Neighbor x.x.x.x(when use passive interface)Offset listsplit-horizon ( in interface)Show ip protocols*auto-summaryEnable Automatic Network Number Summarization*default-informationControl Distribution of Default Information*default-metricSet Metric of Redistributed Routes*distanceDefine an Administrative Distance*distribute-listFilter Networks in Routing Updates*flash-update-thresholdSpecify Flash Update Threshold in Second*maximum-pathsForward Packets Over Multiple Paths *neighborSpecify a Neighbor Router*networkEnable Routing on an IP Network*offset-listAdd or Subtract Offset From IGRP or RIP Metrics*passive-interfaceSuppress Routing Updates on an Interface*redistributeRedistribute Information from Another Routing Protocol*timersAdjust Routing Timers*traffic-shareAlgorithm for Computing Traffic Share for Alternate Routes*validate-update-sourcePerform Sanity Checks Against Source Address ofRouting Updates*versionSet Routing Protocol Version Rtr(config-if)#ip rip ? *AuthenticationAuthentication Control *receiveAdvertisement Reception *sendAdvertisement TransmissionEIGRP Command*auto-summaryEnable Automatic Network Number Summarization*default-informationControl Distribution of Default Information*default-metricSet Metric of Redistributed Routes*distanceDefine an Administrative Distance*distribute-listFilter Networks in Routing Updates*eigrpEIGRP Specific Commands*maximum-pathsForward Packets Over Multiple Paths metricModify IGRP Routing Metrics and Parameters*neighborSpecify a Neighbor Router*networkEnable Routing on an IP Network*offset-listAdd or Subtract Offset from IGRP or RIP Metrics*passive-interfaceSuppress Routing Updates on an Interface*redistributeRedistribute Information From Another Routing Protocol*timersAdjust Routing Timers*traffic-shareAlgorithm for Computing Traffic Share for Alternate Routes*varianceControl Load Balancing VarianceRtr(config-if)#ip hello-interval eigrp 1 ? Seconds between hello transmissionsRtr(config-if)#ip hold-time eigrp 1 ? Seconds before neighbor is considered downRtr(config-if)#ip split-horizon eigrp ? Autonomous system numberRIP/IGRP/EIGRP Split HorizonSerial Interfaces.Frame Relay not enabled Split Horizon is enabled.Frame Relay enabled, no sub interface - Split Horizon is disabled.Frame Relay enabled, sub-interfaces - Split Horizon is enabledUseful Command in OSPFShow ip ospf neiSh ip protocolsSh ip ospf interfaceSh ip ospf databaseDebug ospf adjRtr(config)#router ospf 1Rtr(config-router)#?Router Configuration Commands:*areaOSPF Area Parameters*auto-costCalculate OSPF Interface Cost According to Bandwidth*default-informationControl Distribution of Default Information*default-metricSet Metric of Redistributed Routes*distanceDefine an Administrative Distance*distribute-listFilter Networks in Routing Updates*neighborSpecify a Neighbor Router*networkEnable Routing on an IP Network*passive-interfaceSuppress Routing Updates on an Interface*redistributeRedistribute Information from Another Routing Protocol*router-idRouter-id for this OSPF Process*summary-addressConfigure IP Address Summaries*timersAdjust Routing Timers Rtr(config-router)#area ? OSPF Area ID as a Decimal Value A.B.C.DOSPF Area ID in IP Address FormatRtr(config-router)#area 1 ?*AuthenticationEnable Authentication*default-costSet the Summary Default-cost of a NSSA/stub Area*nssaSpecify a NSSA Area*rangeSummarize Routes Matching Address/mask (Border Routers Only)*stubSpecify a Stub Area*virtual-linkDefine a Virtual Link and its ParametersRtr(config-router)#defa