文档介绍：Cisco发现协议 CiscoDiscoveryProtocol教学目标(Objectives)(FeatureofCiscoDiscoveryProtocol)(mand)(EnableanddisableCDP)()Cisco发现协议(CiscoDiscoveryProtocol)(CDP)().(Summaryinformationincludes):设备ID(DeviceID)本地接口(LocalInterface)保持时间(Holdtime)功能(Capability)平台(Platform)端口ID(PortID)VTP域名(VTPManagementDomainName(CDPv2only))本征VLAN(NativeVLAN(CDPv2only))全双工/半双工(Full/Half-Duplex(CDPv2only))CDPshowcdpCDPCDP用CDP发现邻居(DiscoveringNeighborswithCDP)mandRouterA#shcdpneighborsCapabilityCodes:R-Router,T-TransBridge,B-SourceRouteBridgeS-Switch,H-Host,I-IGMP,r-#shcdpentry*-------------------------DeviceID:RouterBEntryaddress(es):IPaddress::cisco2522,Capabilities:RouterInterface:Serial0,PortID(outgoingport):Serial1Holdtime:168secVersion:workOperatingSystemSoftwareIOS(tm)2500Software(C2500-JS-L),(3),RELEASESOFTWARE(fci)Copyright(c)1986-1999byciscoSystems,piledMon08-Feb-9918:(mands)RouterA#DPcounters: Packetsoutput:56,Input:38 Hdrsyntax:0,Chksumerror:0,Encapsfailed:3 Nomemory:0,Invalidpacket:0,Fragmented:0RouterA#shcdpinterfaceBRI0isadministrativelydown,(no)cdprun命令开启或关闭所由接口的CDP功能。默认情况下,CDP被全局开启。,CDPisgl