1、網(wǎng)絡(luò)設(shè)備基本調(diào)試,ISSUE 1.0,日期：,杭州華三通信技術(shù)有限公司 版權(quán)所有，未經(jīng)授權(quán)不得使用與傳播,按照初始目標組建配置完互聯(lián)網(wǎng)絡(luò)后，首要的任務(wù)是檢查網(wǎng)絡(luò)的連通性 為定位網(wǎng)絡(luò)設(shè)備協(xié)議或控制參數(shù)的配置錯誤或運行故障，需要使用調(diào)試信息,引入,掌握用ping、tracert命令檢查系統(tǒng)連通性 掌握使用debug等命令進行網(wǎng)絡(luò)系統(tǒng)基本調(diào)試的方法,課程目標,學習完本課程，您應(yīng)該能夠：,網(wǎng)絡(luò)連通性測試 系統(tǒng)調(diào)試,目錄,ping的實現(xiàn)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、2,192.168.3.1,ping 192.168.3.1,ping命令的輸出,RTAping 192.168.3.1 PING 192.168.3.1: 56 data bytes, press CTRL_C to break Reply from 192.168.3.1: bytes=56 Sequence=1 ttl=254 time=28 ms Reply from 192.168.3.1: bytes=56 Sequence=2 ttl=254 time=28 ms Reply from 192.168.3.1: bytes=56 Sequence=3 ttl=254 time=2

3、8 ms Reply from 192.168.3.1: bytes=56 Sequence=4 ttl=254 time=27 ms Reply from 192.168.3.1: bytes=56 Sequence=5 ttl=254 time=28 ms - 192.168.3.1 ping statistics - 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 27/27/28 ms,使用ping命令,ping ? -a Select source IP a

4、ddress -c Specify the number of echo requests to be sent -f Specify packets not to be fragmented -h Specify TTL value for echo requests to be sent -i Select the interface to send the packets -m Specify the interval in milliseconds to send packets -n Numeric output only. No attempt will be made to lo

5、okup host addresses for symbolic names -p No more than 8 pad hexadecimal characters to fill out the sent packet. For example, -p f2 will fill the sent packet with f and 2 repeatedly -q Quiet output. Nothing will be displayed except for the summary lines. -r Record route. Include the RECORD_ROUTE opt

6、ion in the ECHO_REQUEST packets and display the route -s Specify the number of data bytes to be sent -t Specify the time in milliseconds to wait for each reply -tos Specify TOS value for echo requests to be sent -v Display the received ICMP packets other than ECHO-RESPONSE packets. STRING IP address

7、 or hostname of a remote system ip IP Protocol ipv6 IPv6 Protocol,tracert的實現(xiàn)原理,RTC,RTB,RTA,(1),(2),echo-request ttl=1,192.168.1.1,192.168.1.2,192.168.2.1,192.168.2.2,192.168.3.1,tracert 192.168.3.1,ttl-exceeded,port-unreachable,echo-request ttl=2,tracert命令的輸出,RTAtracert 192.168.3.1 traceroute to 192

8、.168.3.1(192.168.3.1) 30 hops max,40 bytes packet, press CTRL _C to break 1 192.168.1.2 17 ms 17 ms 17 ms 2 192.168.2.2 18 ms 19 ms 19 ms,*Oct 1 17:11:02:973 2008 RTA IPFWD/7/debug_case: Sending, interface = Serial6/0, version = 4, headlen = 20, tos = 0, pktlen = 40, pktid = 30003, offset = 0, ttl =

9、 1, protocol = 17, checksum = 48959, s = 192.168.1.1, d = 192.168.3.1 *Oct 1 17:11:03:407 2008 RTA IPFWD/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.

10、1 *Oct 1 16:59:43:773 2008 RTA IPDBG/7/debug_icmp: ICMP Receive: ttl-exceeded(Type=11, Code=0), Src = 192.168.1.2, Dst = 192.168.1. 1; Original IP header: Pro = 17, Src = 192.168.1.1, Dst = 192.168.3.1, First 8 b ytes = 7533829A 00140000 *Oct 1 16:59:43:920 2008 RTA IPDBG/7/debug_icmp: ICMP Receive:

11、 port-unreachable(Type=3, Code=3), Src = 192.168.2.2, Dst = 192.1 .1.1; Original IP header: Pro = 17, Src = 192.168.1.1, Dst = 192.168.3.1, First 8 bytes = 7533829D 00140000,使用tracert命令,tracert ? -a Select source IP address -f First time to live -m Maximum time to live -p UDP port number -q Number o

12、f probe packets -w Timeout in milliseconds to wait for each reply STRING IP address or hostname of a remote system ipv6 IPv6 Protocol,網(wǎng)絡(luò)連通性測試 系統(tǒng)調(diào)試,目錄,系統(tǒng)調(diào)試介紹,對網(wǎng)絡(luò)設(shè)備所支持的絕大部分協(xié)議和功能，系統(tǒng)都提供了相應(yīng)的調(diào)試功能，幫助用戶對錯誤進行診斷和定位 調(diào)試信息的輸出由兩個開關(guān)控制,系統(tǒng)調(diào)試的操作,開啟控制臺對系統(tǒng)信息的監(jiān)視功能 打開調(diào)試信息的屏幕輸出開關(guān) 打開模塊調(diào)試開關(guān) 顯示調(diào)試開關(guān),terminal monitor,terminal

13、debugging,display debugging,debugging module-name,調(diào)試信息輸出的例子,ping -c 1 192.168.1.2 PING 192.168.1.2: 56 data bytes, press CTRL_C to break *Oct 1 17:16:21:648 2008 RTA IPFWD/7/debug_case: Sending, interface = Serial6/0, version = 4, headlen = 20, tos = 0, pktlen = 84, pktid = 2775, offset = 0, ttl = 2

14、55, protocol = 1, checksum = 11646, s = 192.168.1.1, d = 192.168.1.2 prompt: Sending the packet from local at Serial6/0 *Oct 1 17:16:21:673 2008 RTA IPFWD/7/debug_case: Receiving, interface = Serial6/0, version = 4, headlen = 20, tos = 0, pktlen = 84, pktid = 1515, offset = 0, ttl = 255, protocol =

15、1, checksum = 12906, s = 192.168.1.2, d = 192.168.1.1 prompt: Receiving IP packet from Serial6/0 *Oct 1 17:16:21:674 2008 RTA IPDBG/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 = 192.168.1.1 prompt: IP packet is delivering up! Reply from 192.168.1.2: bytes=5