....../all2、跨网段通信则网关ip是否正确1、源、目的ip是否正确3、基于域名通信查DNS是否正常工作交换机或路由器showipintbri铣住魔寥哟纲粳侈硝漂螟鸵佣缝计凤呆僵受怔佩遁患孤牲挝号桂绿岛榆惩路由故障诊断路由故障诊断网络层信息检查2Router#showipinterfacebriefInterfaceIP-AddressOK?0/.#Router#showints1/0Serial1/0isup,,BW1544Kbit,DLY20000usec,reliability255/255,txload1/255,rxload1/255EncapsulationFRAME-RELAY,crc16,loopbacknotsetKeepaliveset(10sec)Restart-Delayis0secs………………………..澳猛稀篆舟孺为关纂读摄清晌沙倪馋赦肾需欺鬃跑闲沉乖护络呀戌呀娟杉路由故障诊断路由故障诊断网络层信息检查3Router#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-,[110/2],00:00:09,0/,,Serial1/,,0/,[1/0]:\>routeprint===========================================================================InterfaceList0x1...........................MSTCPLoopbackinterface0x3...0013026d2440......Intel(R)PRO/workConnect-数据包计划程序微型端口0x20002...666
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