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Lab Activities Packet Tracer – Configuring secure Passwords and also SSH Packet Tracer – check Connectivity through Traceroute Packet Tracer – Using display Commands Packet Tracer – Troubleshooting Connectivity Issues Packet Tracer – skills Integration Challenge Packet Tracer – Troubleshooting Challenge
Appendix Packet Tracer – Configuring an integrated Router
Appendix Packet Tracer – Subnetting scenario 2

Packet Tracer – trial and error Connectivity v Traceroute (Answer Version)

Answer Note: Red font shade or gray highlights suggest text that appears in the answer copy only.


* Packet Tracer – test Connectivity v Traceroute


Part 1: test End-to-End Connectivity through the tracert Command

Part 2: to compare to the traceroute Command ~ above a Router


This activity is draft to aid you troubleshoot network connectivity concerns using commands to map the course from resource to destination. Girlfriend are forced to study the calculation of tracert (the windows command) and traceroute (the IOS command) as packets traverse the network and determine the cause of a network issue. ~ the worry is corrected, use the tracert and traceroute regulates to verify the completion.

Part 1: check End-to-End Connectivity with the tracert Command

Step 1: Send a ping from one end of the network to the other end.

Click PC1 and open the Command Prompt. Ping PC3 at What blog post is presented as a an outcome of the ping?


Destination host unreachable

Step 2: trace the path from PC1 to determine where in the route connectivity fails.From the Command Prompt of PC1, go into the tracert command.When you obtain the Request timed the end message, press Ctrl+C. What was the first IP address provided in the tracert output?____________________________________________________________________________________10.0.0.254—the gateway deal with of the PCObserve the results of the tracert command. What is the last attend to reached through the tracert command?____________________________________________________________________________________10.100.100.6Step 3: exactly the network problem.Compare the last resolve reached v the tracert command through the network addresses listed on the topology. The furthest device from the organize with an deal with in the network range found is the allude of failure. What devices have addresses configured for the network whereby the failure occurred?____________________________________________________________________________________RouterB and RouterCClick RouterC and climate the CLI tab. What is the status of the interfaces?____________________________________________________________________________________They show up to it is in up and active.Compare the IP addresses top top the interfaces with the network addresses ~ above the topology. Go there show up to it is in anything extraordinary?____________________________________________________________________________________The Serial 0/0/0 interface has actually an not correct IP deal with based ~ above the topology.Make the necessary transforms to reclaim connectivity; however, do not change the subnets. What is solution?____________________________________________________________________________________Change the IP attend to on S0/0/0 to 4: Verify that end-to-end connectivity is established.From the PC1 Command Prompt, enter the tracert command.Observe the calculation from the tracert command. Was the command successful? __________ Yes

Part 2: to compare to the traceroute Command top top a Router

Click RouterA and climate the CLI tab.Enter the traceroute command. Go the command complete successfully? __________ YesCompare the output from the router traceroute command with the pc tracert command. What is noticeably different about the list of addresses returned?____________________________________________________________________________________The router has actually one much less IP resolve because it will be using RouterB as the next machine along the path.

Part 3: Using expanded Traceroute

In addition to traceroute, Cisco IOS additionally includes expanded traceroute. Expanded traceroute allows the administrator to readjust minor traceroute procedure parameters through asking an easy questions.

As part of the confirmation process, use extended traceroute ~ above RouterA to boost the number of ICMP packets traceroute sends out to each hop.

Note: home windows tracert also permits the user to change a few aspects v the use of command line options.

Click RouterA and climate the CLI tab.Enter the traceroute and push ENTER. Notification that simply the traceroute command need to be entered.Answer the questions asked by extended traceroute as follows. Extended traceroute should run ideal after the last inquiry is answered.Protocol : ipTarget IP address: address: display : nTimeout in secs <3>: 3Probe count <3>: 5Minimum Time come Live <1>: 1Maximum Time come Live <30>: 30Note: the value shown in base is the default value and also will be used by traceroute if no worth is entered. Simply press ENTER to usage the default value.How countless questions were answered v non-default values? What to be the brand-new value?____________________________________________________________________________________Probe count. The default worth is 3 but the new value noted was 5.How many ICMP packets were sent out by RouterA?____________________________________________________________________________________Five (5).

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Note: Probe count states the number of ICMP packets sent out to each hop by traceroute. A higher number that probes permits for a an ext accurate average round expedition time because that the packets.Still top top RouterA, run expanded traceroute again yet this time readjust the timeout worth to 7 seconds.What happened? just how does the different timeout value affect traceroute?____________________________________________________________________________________The timeout parameter informs traceroute how long it should wait for a reply before declaring the hop unreachable. The default value is 3 seconds.Can girlfriend think that a usage for the timeout parameter?____________________________________________________________________________________If the route is also congested but still operational, it deserve to be beneficial to readjust the timeout value to ensure traceroute waits lengthy enough before declaring the hop unreachable.