HC网络设备基本调试ppt课件.ppt

网络设备基本调试 ISSUE1 0 日期 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 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 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 pNomorethan8 pad hexadecimalcharacterstofilloutthesentpacket 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 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 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 1ttl 255time 26ms 192 168 1 2pingst