H3C华三构建中小企业网络NE V6.0培训教材-第10章 网络设备基本调试.ppt

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,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,引入,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,课程目标,学习完本课程，您应该能够：,网络连通性测试系统调试,目录,ping的实现原理,RTC,RTB,RTA,echo-request,echo-reply,192.168.1.1,192.168.1.2,192.168.2.1,192.168.2.2,192.168.3.1,ping192.168.3.1,ping命令的输出,RTAping192.168.3.1PING192.168.3.1:56databytes,pressCTRL_CtobreakReplyfrom192.168.3.1:bytes=56Sequence=1ttl=254time=28msReplyfrom192.168.3.1:bytes=56Sequence=2ttl=254time=28msReplyfrom192.168.3.1: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=27/27/28ms,使用ping命令,ping?-aSelectsourceIPaddress-cSpecifythenumberofechorequeststobesent-fSpecifypacketsnottobefragmented-hSpecifyTTLvalueforechorequeststobesent-iSelecttheinterfacetosendthepackets-mSpecifytheintervalinmillisecondstosendpackets-nNumericoutputonly.Noattemptwillbemadetolookuphostaddressesforsymbolicnames-pNomorethan8padhexadecimalcharacterstofilloutthesentpacket.Forexample,-pf2willfillthesentpacketwithfand2repeatedly-qQuietoutput.Nothingwillbedisplayedexceptforthesummarylines.-rRecordroute.IncludetheRECORD_ROUTEoptionintheECHO_REQUESTpacketsanddisplaytheroute-sSpecifythenumberofdatabytestobesent-tSpecifythetimeinmillisecondstowaitforeachreply-tosSpecifyTOSvalueforechorequeststobesent-vDisplaythereceivedICMPpacketsotherthanECHO-RESPONSEpackets.STRINGIPaddressorhostnameofaremotesystemipIPProtocolipv6IPv6Protocol,tracert的实现原理,RTC,RTB,RTA,(1),(2),echo-requestttl=1,192.168.1.1,192.168.1.2,192.168.2.1,192.168.2.2,192.168.3.1,tracert192.168.3.1,ttl-exceeded,port-unreachable,echo-requestttl=2,tracert命令的输出,RTAtracert192.168.3.1tracerouteto192.168.3.1(192.168.3.1)30hopsmax,40bytespacket,pressCTRL_Ctobreak1192.168.1.217ms17ms17ms2192.168.2.218ms19ms19ms,*Oct117:11:02:9732008RTAIPFWD/7/debug_case:Sending,interface=Serial6/0,version=4,headlen=20,tos=0,pktlen=40,pktid=30003,offset=0,ttl=1,protocol=17,checksum=48959,s=192.168.1.1,d=192.168.3.1*Oct117:11:03:4072008RTAIPFWD/7/debug_case:Sending,interface=Serial6/0,version=4,headlen=20,tos=0,pktlen=40,pktid=30006,offset=0,ttl=2,protocol=17,checksum=48700,s=192.168.1.1,d=192.168.3.1*Oct116:59:43:7732008RTAIPDBG/7/debug_icmp:ICMPReceive:ttl-exceeded(Type=11,Code=0),Src=192.168.1.2,Dst=192.168.1.1;OriginalIPheader:Pro=17,Src=192.168.1.1,Dst=192.168.3.1,First8bytes=7533829A00140000*Oct116:59:43:9202008RTAIPDBG/7/debug_icmp:ICMPReceive:port-unreachable(Type=3,Code=3),Src=192.168.2.2,Dst=192.1.1.1;OriginalIPheader:Pro=17,Src=192.168.1.1,Dst=192.168.3.1,First8bytes=7533829D00140000,使用tracert命令,tracert?-aSelectsourceIPaddress-fFirsttimetolive-mMaximumtimetolive-pUDPportnumber-qNumberofprobepackets-wTimeoutinmillisecondstowaitforeachreplySTRINGIPaddressorhostnameofaremotesystemipv6IPv6Protocol,网络连通性测试系统调试,目录,系统调试介绍,对网络设备所支持的绝大部分协议和功能，系统都提供了相应的调试功能，帮助用户对错误进行诊断和定位调试信息的输出由两个开关控制,系统调试的操作,开启控制台对系统信息的监视功能打开调试信息的屏幕输出开关打开模块调试开关显示调试开关,terminalmonitor,terminaldebugging,displaydebugging,debuggingmodule-name,调试信息输出的例子,ping-c1192.168.1.2PING192.168.1.2:56databytes,pressCTRL_Ctobreak*Oct117:16:21:6482008RTAIPFWD/7/debug_case:Sending,interface=Serial6/0,version=4,headlen=20,tos=0,pktlen=84,pktid=2775,offset=0,ttl=255,protocol=1,checksum=11646,s=192.168.1.1,d=192.168.1.2prompt:SendingthepacketfromlocalatSerial6/0*Oct117:16:21:6732008RTAIPFWD/7/debug_case:Receiving,interface=Serial6/0,version=4,headlen=20,tos=0,pktlen=84,pktid=1515,offset=0,ttl=255,protocol=1,checksum=12906,s=192.168.1.2,d=192.168.1.1prompt:ReceivingIPpacketfromSerial6/0*Oct117:16:21:6742008RTAIPDBG/7/debug_case:Delivering,interface=Serial6/0,version=4,headlen=20,tos=0,pktlen=84,pktid=1515,offset=0,ttl=255,protocol=1,checksum=12906,s=192.168.1.2,d=192.168.1.1prompt:IPpacketisdeliveringup!Replyfrom192.168.1.2:bytes=56Sequence=