第10章 网络设备基本调试

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1、网络设备基本调试ISSUE1.0日期：杭州华三通信技术有限公司版权所有，未经授权不得使用与传播引入按照初始目标组建配置完互联网络后，首要的任务是检查网络的连通性为定位网络设备协议或控制参数的配置错误或运行故障，需要使用调试信息课程目标学习完本课程，您应该能够：掌握用ping、tracert命令检查系统连通性掌握使用debug等命令进行网络系统基本调试的方法目录网络连通性测试系统调试ping的实现原理RTARTBRTC192.168.1.1192.168.1.2192.168.2.1192.168.2.2

2、192.168.3.1ping192.168.3.1echo-requestecho-replywww.h3c.comping命令的输出[RTA]ping192.168.3.1PING192.168.3.1:56databytes,pressCTRL_CtobreakReplyfrom192.168.3.1:bytes=56Sequence=1ttl=254time=28msReplyfrom192.168.3.1:bytes=56Sequence=2ttl=254time=28msReplyfrom192.168

3、.3.1:bytes=56Sequence=3ttl=254time=28msReplyfrom192.168.3.1:bytes=56Sequence=4ttl=254time=27msReplyfrom192.168.3.1:bytes=56Sequence=5ttl=254time=28ms---192.168.3.1pingstatistics---5packet(s)transmitted5packet(s)received0.00%packetlossround-tripmin/avg/max=27/2

4、7/28mswww.h3c.com使用ping命令ping?-aSelectsourceIPaddress-cSpecifythenumberofechorequeststobesent-fSpecifypacketsnottobefragmented-hSpecifyTTLvalueforechorequeststobesent-iSelecttheinterfacetosendthepackets-mSpecifytheintervalinmillisecondstosendpackets-nNume

5、ricoutputonly.Noattemptwillbemadetolookuphostaddressesforsymbolicnames-pNomorethan8"pad"hexadecimalcharacterstofilloutthesentpacket.Forexample,-pf2willfillthesentpacketwithfand2repeatedly-qQuietoutput.Nothingwillbedisplayedexceptforthesummarylines.-rRecordrout

6、e.IncludetheRECORD_ROUTEoptionintheECHO_REQUESTpacketsanddisplaytheroute-sSpecifythenumberofdatabytestobesent-tSpecifythetimeinmillisecondstowaitforeachreply-tosSpecifyTOSvalueforechorequeststobesent-vDisplaythereceivedICMPpacketsotherthanECHO-RESPONSEpackets.

7、STRING<1-20>IPaddressorhostnameofaremotesystemipIPProtocolipv6IPv6Protocolwww.h3c.comtracert的实现原理RTARTBRTC192.168.1.1192.168.1.2192.168.2.1192.168.2.2192.168.3.1echo-requestttl=1(1)ttl-exceededecho-requestttl=2(2)port-unreachabletracert192.168.3.1www.h3c.comtr

8、acert命令的输出[RTA]tracert192.168.3.1tracerouteto192.168.3.1(192.168.3.1)30hopsmax,40bytespacket,pressCTRL_Ctobreak1192.168.1.217ms17ms17ms2192.168.2.218ms19ms19ms*Oct117:11:02:9732008