Lab 9.3.4 Troubleshooting Using traceroute – Instructor Version 2500
Contents
1. Success rate is 100 percent 5 5 round trip min avg max 32 32 36 ms Step 4 Test Layer 3 connectivity Using the command prompt enter ping and the IP address of all routers interfaces This will test Layer 3 connectivity between the workstation and the routers a Is the output from the workstation ping command the same as the output from the ping command from a router No It is different The router display indicates a successful ping with an exclamation point The host OS indicates with a Reply statement size and time for each ICMP datagram Both show the summary results Step 5 Login to the router in user mode a Login to the GAD router and enter the Privileged EXEC mode Step 6 Discover the trace options a Enter traceroute at the router prompt b What did the router respond with Protocol ip Target IP address Source address Numeric display n Timeout in seconds 3 Probe count 3 Minimum Time to Live 1 Maximum Time to Live 30 Port Number 33434 Loose Strict Record Timestamp Verbose none Step 7 Use the traceroute command a Enter traceroute ip xxx xxx xxx xxx where XXX XXX XXX XXX is the IP address of the target destination Note Use one of the end routers and trace IP to the other end host The router will respond with GAD traceroute ip 192 168 16 2 Type escape sequence to abort Tracing the route to 192 168 16 2 1 BHM 192 168 15 2 16 msec 16 msec2. Step 1 Configure the GAD PHX and BHM routers a On the routers enter the global configuration mode and configure the hostname as shown in the chart Then configure the console virtual terminal and enable passwords If there are problems doing this refer to the Configuring router passwords lab Next configure the interfaces and routing according to the chart If there are problems doing this refer to the Configuring Host Tables lab and the Configuring RIP lab Make sure to copy the running config to the startup config on each router so the configuration will not be lost if the router is power recycled b This lab requires that IP hostnames are configured c Verify the routers configurations by performing a show running config on each router If not correct fix any configuration errors and verify Step 2 Configure the workstations with appropriate IP address subnet mask and default gateway Step 3 Ping from the workstations a From a Windows host click on Start gt Programs gt Accessories MS DOS This will open a Command Prompt window If this not the correct location see the instructor for the proper location on this computer b To test that the TCP IP stack and default gateway on the workstation are configured and working properly use the MS DOS window to ping the routers by issuing the following commands C gt ping 192 168 14 1 The ping should respond with successful results If not check the configurations on the
3. Step 6 Discover the trace options a Enter traceroute at the router prompt b What did the router respond with Protocol ip Target IP address Source address Numeric display n Timeout in seconds 3 Probe count 3 Minimum Time to Live 1 Maximum Time to Live 30 Port Number 33434 Loose Strict Record Timestamp Verbose none Step 7 Use the traceroute command a Enter traceroute ip xxx xxx xxx xxx where XXX XXX XXX XXX is the IP address of the target destination Note Use one of the end routers and trace IP to the other end host The router will respond with GAD traceroute ip 192 168 16 2 Type escape sequence to abort Tracing the route to 192 168 16 2 1 BHM 192 168 15 2 16 msec 16 msec 16 msec 2 192 168 16 2 16 msec 16 msec 12 msec GAD If the output is not successful check the router and host configurations Step 8 Continue using traceroute Repeat Step 5 with all other routers on the network Step 9 Use the tracert command from a workstation a From the console workstation click on Start gt Programs gt Command Prompt An MS DOS Command Prompt window will open up b Enter tracert and the same IP address used in Step 5 c The first hop is the default gateway or the near side router interface on the LAN that the workstation is connected to List the host name and IP address of the router that the ICMP packet was routed through 718 833 CCNA 2 Routers and Routing Basics
4. any configuration errors and verify Step 2 Configure the workstations with appropriate IP address subnet mask and default gateway Step 3 Ping from the workstations a From a Windows host click on Start gt Programs gt Accessories MS DOS This will open a Command Prompt window If this not the correct location see the instructor for the proper location on this computer b To test that the TCP IP stack and default gateway on the workstation are configured and working properly use the MS DOS window to ping the routers by issuing the following commands C gt ping 192 168 14 1 The ping should respond with successful results If not check the configurations on the host and directly connected router C gt ping 192 168 14 1 Pinging 192 168 14 1 with 32 bytes of data Reply from 192 168 14 Reply from 192 168 14 Reply from 192 168 14 Reply from 192 168 14 bytes 32 time lt 10ms TTL 255 bytes 32 time lt 10ms TTL 255 bytes 32 time lt 10ms TTL 255 bytes 32 time lt 10ms TTL 255 a Ping statistics for 192 168 14 1 Packets Sent 4 Received 4 Lost 0 0 loss Approximate round trip times in milli seconds Minimum Oms Maximum Oms Average Oms 295 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc BHM ping 192 168 17 1 Type escape sequence to abort Sending 5 100 byte ICMP Echos to 192 168 17 1 timeout is 2 seconds
5. 16 msec 2 192 168 16 2 16 msec 16 msec 12 msec GAD If the output is not successful check the router and host configurations Step 8 Continue using traceroute Repeat Step 5 with all other routers on the network Step 9 Use the tracert command from a workstation a From the console workstation click on Start gt Programs gt Command Prompt An MS DOS Command Prompt window will open up b Enter tracert and the same IP address used in Step 5 296 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc c The first hop is the default gateway or the near side router interface on the LAN that the workstation is connected to List the host name and IP address of the router that the ICMP packet was routed through Host Name IC Address GAD 192 168 14 1 192 168 15 1 PHX 192 168 13 1 192 168 17 2 192 168 17 2 d There is one more entry in the output of the tracert command when the trace is from the computer command prompt to the target host Why It must go through the first router hop Upon completion of the previous steps logoff by typing exit and turn the router off 297 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright O 2003 Cisco Systems Inc OUTPUT GAD show running config hostname GAD enable secret 5 S 1S ylDP MXP29Gcxj l1B9Xf Kky3n1 ip subnet zero ip host GAD 192 168 14 1 192 21499 peel ip host PHR 192 168 17 1 1
6. 92 168 13 2 ib host BAM 192 168 16 1 192 4158 15 2 192 168 1341 interface Etherneto ip address 192 168 14 1 255 EE 255 no ip directed broadcast interface Serialo ip address 192 168 15 1 255 255 29540 no ip directed broadcast no ip mroute cache clock rate 64000 interface Seriall no ip address no ip directed broadcast shutdown router rip network 192 168 14 0 network 192 168 15 0 ip classless line con 0 transport input none line aux 0 line vty 0 4 password cisco login end 298 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc BHM show running config hostname BHM enable secret 5 1Sy1DPSMXP29Gcxj 1B9Xf Kky3n1 ip subnet zero ip host GAD 192 168 14 1 192 158 15 ip host PHX 192 168 17 1 192 168 RS ip host BUM 192 168 16 1 192 1584 15 2 192 168 13 1 interface EthernetO ip address 192 168 16 1 255 2555 25540 no ip directed broadcast interface SerialO ip address 192 168 15 2 255 255 255 0 no ip directed broadcast no ip mroute cache interface Seriall ip address 192 168 13 1 255 295 255 0 no ip directed broadcast no ip mroute cache clock rate 64000 router rip network 192 168 13 0 network 192 168 15 0 network 1
7. 92 168 16 0 ip classless line con 0 transport input none line aux 0 line vty 0 4 password cisco login end 299 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc PHX show running config hostname PHX enable secret 5 S1SylDP MXP29Gcxj lB9Xf Kky3n1 ip subnet zero ip host GAD 192 168 14 1 192 168 15 1 ip host PHX 192 168 17 1 192 168 13 2 ip host BHM 192 168 16 1 192 168 15 2 192 168 13 1 interface Ethernet0 ip address 192 168 17 1 255 255 255 0 no ip directed broadcast interface Serialo no ip address no ip directed broadcast shutdown interface Seriall ip address 192 168 13 2 255 255 255 0 no ip directed broadcast no ip mroute cache router rip network 192 168 13 0 network 192 168 17 0 ip classless line con 0 transport input none line aux 0 line vty 0 4 password cisco login end 300 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc C gt ping 192 168 14 1 Pinging 192 168 14 1 with 32 bytes of data Reply from 192 168 14 Reply from 192 168 14 Reply from 192 168 14 Reply from 192 168 14 bytes 32 time lt 10ms TTL 255 bytes 32 time lt 10ms TTL 255 bytes 32 time l10ms TTL 255 bytes 32 time 10ms TTL 255 BiB e Ping statistics for 192 168 14 1 Packets Sent 4 Rec
8. Cisco Systems iii ir Lab 9 3 4 Troubleshooting Using traceroute Instructor Version 2500 Router 2 Router 1 Router 3 Straight through cable Serial cable eee E Console Rollover 90000000990990900029009 9 Router Router Enable Enable VTY Routing RIP Designation Name secret and console protocol network password password statements GAD 192 168 14 0 192 168 15 0 192 168 15 0 192 168 13 0 192 168 16 0 192 168 13 0 192 168 17 0 Router Fast Interface Serial 0 Interface Serial 1 Subnet IP host Designation Ethernet 0 type Address type Address mask all table Address Serial 0 Serial 1 addresses entries Router 1 192 160 141 192160 15 1 NA No address 265 255 2550 BHM PHX 192 168 16 1 192 168 15 2 192 168 13 1 255 255 255 0 GAD PHX Rowera 1921087 1 NA Noaddress DTE 192 168 13 2 255 255 2550 GAD BHM 294 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc Objective Use the traceroute Cisco IOS command from source router to destination router Use the tracert MS DOS command from source workstation to destination router Verify that the network layer between source destination and each router along the way is working properly Retrieve information to evaluate the end to end path reliability Cable the network in the diagram Any router that meets the interface requirements displayed on the above diagram such as 800 1600 1700 2500 2600 rou
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10. ame BHM enable secret 5 1Sy1DPSMXP29Gcxj 1B9Xf Kky3n1 ip subnet zero ip host GAD 192 168 14 1 192 158 15 4 ip host PHX 192 168 17 1 192 168 l3 ip host BHM 192 168 16 1 192 1584 15 2 192 168 1341 interface FastEthernet0 0 ip address 192 168 16 1 255 2555 25540 no ip directed broadcast i interface Serial0 0 ip address 192 168 15 2 255 255 255 0 no ip directed broadcast no ip mroute cache interface Serial0 1 ip address 192 168 13 1 255 295 255 0 no ip directed broadcast no ip mroute cache clock rate 64000 router rip network 192 168 13 0 network 192 168 15 0 network 192 168 16 0 ip classless line con 0 transport input none line aux 0 line vty 0 4 password cisco login end 721 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc PHX show run hostname PHX enable secret 5 1Sy1DPSMXP29Gcxj 1B9Xf Kky3n1 ip subnet zero ip host GAD 192 168 14 1 192 168 15 1 ip host PHX 192 168 17 1 192 168 13 2 ip host BHM 192 168 16 1 192 168 15 2 192 168 13 1 interface FastEthernet0 0 ip address 192 168 17 1 255 255 255 0 no ip directed broadcast interface Serial0 0 no ip address no ip directed broadcast shutdown interface Serial0 1 ip address 192 168 13 2 255 255 255 0 no ip dire
11. cted broadcast no ip mroute cache router rip network 192 168 13 0 network 192 168 17 0 ip classless line con 0 transport input none line aux 0 line vty 0 4 password cisco login end 722 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc C gt ping 192 168 14 1 Pinging 192 168 14 1 with 32 bytes of data Reply from 192 168 14 Reply from 192 168 14 Reply from 192 168 14 Reply from 192 168 14 bytes 32 time lt 10ms TTL 255 bytes 32 time lt 10ms TTL 255 bytes 32 time l10ms TTL 255 bytes 32 time 10ms TTL 255 BiB e Ping statistics for 192 168 14 1 Packets Sent 4 Received 4 Lost 0 0 loss Approximate round trip times in milli seconds Minimum Oms Maximum Oms Average Oms BHM ping 192 168 17 1 Type escape sequence to abort Sending 5 100 byte ICMP Echos to 192 168 17 1 timeout is 2 seconds Success rate is 100 percent 5 5 round trip min avg max 32 32 36 ms C gt tracert 192 168 17 2 Tracing route to WWESERVER 172 25 0 134 over a maximum of 30 hops 10 ms 10 ms lt 10 ms 192 168 14 lt 10 ms lt 10 ms lt 10 ms 192 168 15 10 ms 10 ms z 10 ms 192 168 132 10 ms 10 ms l0 ms 192 168 17 III MNi BiBip Trace complete 723 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003
12. eived 4 Lost 0 0 loss Approximate round trip times in milli seconds Minimum Oms Maximum Oms Average Oms BHM ping 192 168 17 1 Type escape sequence to abort Sending 5 100 byte ICMP Echos to 192 168 17 1 timeout is 2 seconds Success rate is 100 percent 5 5 round trip min avg max 32 32 36 ms C gt tracert 192 168 17 2 Tracing route to WWESERVER 172 25 0 134 over a maximum of 30 hops 10 ms 10 ms lt 10 ms 192 168 14 lt 10 ms lt 10 ms lt 10 ms 192 168 15 10 ms 10 ms z 10 ms 192 168 132 10 ms 10 ms l0 ms 192 168 17 III MNi BiBip Trace complete 301 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright O 2003 Cisco Systems Inc Cisco Systems aii erie Lab 9 3 4 Troubleshooting Using traceroute Instructor Version 2600 Router 2 Router 1 Router 3 Straight through cable Serial cable eee E Console Rollover 90000000099900002909 9 Router Router Enable Enable VTY Routing RIP Designation Name secret and console protocol network password password statements GAD 192 168 14 0 192 168 15 0 192 168 15 0 192 168 13 0 192 168 16 0 192 168 13 0 192 168 17 0 Router Fast Interface Serial 0 Interface Serial 1 Subnet IP host Designation Ethernet 0 type Address type Address mask all table Address Serial 0 Serial 1 addresses entries Router 1 192 160 141 192160 15 1 NA No addre
13. host and directly connected router C gt ping 192 168 14 1 Pinging 192 168 14 1 with 32 bytes of data Reply from 192 168 14 Reply from 192 168 14 Reply from 192 168 14 Reply from 192 168 14 bytes 32 time lt 10ms TTL 255 bytes 32 time lt 10ms TTL 255 bytes 32 time lt 10ms TTL 255 bytes 32 time lt 10ms TTL 255 a Ping statistics for 192 168 14 1 Packets Sent 4 Received 4 Lost 0 0 loss Approximate round trip times in milli seconds Minimum Oms Maximum Oms Average Oms 717 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc BHM ping 192 168 17 1 Type escape sequence to abort Sending 5 100 byte ICMP Echos to 192 168 17 1 timeout is 2 seconds Success rate is 100 percent 5 5 round trip min avg max 32 32 36 ms Step 4 Test Layer 3 connectivity Using the command prompt enter ping and the IP address of all routers interfaces This will test Layer 3 connectivity between the workstation and the routers a Is the output from the workstation ping command the same as the output from the ping command from a router No It is different The router display indicates a successful ping with an exclamation point The host OS indicates with a Reply statement size and time for each ICMP datagram Step 5 Login to the router in user mode a Login to the GAD router and enter the Privileged Exec mode
14. ss 265 255 2550 BHM PHX 192 168 16 1 192 168 15 2 192 168 13 1 255 255 255 0 GAD PHX Rowera 1921087 1 NA Noaddress DTE 192 168 13 2 255 255 2550 GAD BHM 716 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc Objective Use the traceroute Cisco IOS command from source router to destination router Use the tracert MS DOS command from source workstation to destination router Verify that the network layer between source destination and each router along the way is working properly Retrieve information to evaluate the end to end path reliability Cable the network in the diagram Any router that meets the interface requirements displayed on the above diagram such as 800 1600 1700 2500 2600 routers or a combination may be used Please refer to the chart at the end of the lab to correctly identify the interface identifiers to be used based on the equipment in the lab The configuration output used in this lab is produced from 1721 series routers Any other router used may produce slightly different output The following steps are intended to be executed on each router unless specifically instructed otherwise Start a HyperTerminal session as performed in the Establishing a HyperTerminal session lab Erase and reload all routers in this lab assignment before continuing If there are problems in accomplishing this go to lab 4 2 6 and use those erase and reload instructions
15. ters or a combination may be used Please refer to the chart at the end of the lab to correctly identify the interface identifiers to be used based on the equipment in the lab The configuration output used in this lab is produced from 1721 series routers Any other router used may produce slightly different output The following steps are intended to be executed on each router unless specifically instructed otherwise Start a HyperTerminal session as performed in the Establishing a HyperTerminal session lab Erase and reload all routers in this lab assignment before continuing If there are problems in accomplishing this go to lab 4 2 6 and use those erase and reload instructions Step 1 Configure the GAD PHX and BHM routers a On the routers enter the global configuration mode and configure the hostname as shown in the chart Then configure the console virtual terminal and enable passwords If there are problems doing this refer to the Configuring router passwords lab Next configure the interfaces and routing according to the chart If there are problems doing this refer to the Configuring Host Tables lab and the Configuring RIP lab Make sure to copy the running config to the startup config on each router so the configuration will not be lost if the router is power recycled b This lab requires that IP hostnames are configured c Verify the routers configurations by performing a show running config on each router If not correct fix
16. v 3 1 Lab 9 3 4 Copyright 2003 Cisco Systems Inc Host Name IG Address 192 168 14 1 x 192 168 15 1 192 168 13 1 192 168 17 2 192 168 17 2 d There is one more entry in the output of the tracert command when the trace is from the computer command prompt to the target host Why It must go through the first router hop Upon completion of the previous steps logoff by typing exit and turn the router off 719 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright O 2003 Cisco Systems Inc GAD show running config hostname GAD I enable secret 5 S 1S ylDP MXP29Gcxj lB9Xf Kky3n1 ip subnet zero ip host GAD 192 168 14 1 192 168 15 1 ip host PHX 192 168 17 1 192 168 13 2 ip h st BAM 192 168 16 1 192 168 15 2 192 168 13 1 interface FastEthernet0 0 ip address 192 168 14 1 255 255 255 0 no ip directed broadcast I interface Serial0 0 ip address 192 168 15 1 255 255 255 0 no ip directed broadcast no ip mroute cache clock rate 64000 interface Serial0 1 no ip address no ip directed broadcast shutdown router rip network 192 168 14 0 network 192 168 15 0 ip classless line con 0 transport input none line aux 0 line vty 0 4 password cisco login end 720 833 CCNA 2 Routers and Routing Basics v 3 1 Lab 9 3 4 Copyright O 2003 Cisco Systems Inc BHM show running config hostn
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