7.3.2.9 Packet Tracer – Troubleshooting IPv4 and IPv6 Addressing

7.3.2.9 Packet Tracer – Troubleshooting IPv4 and IPv6 Addressing

Packet Tracer – Troubleshooting IPv4 and IPv6 Addressing (Answer Version)

Answer Note: Red font color or gray highlights indicate text that appears in the Answer copy only.

Topology

Addressing Table

Device	Interface	IPv4 Address	Subnet Mask	Default Gateway
		IPv6 Address/Prefix
R1	G0/0	10.10.1.1	255.255.255.0	N/A
	G0/1	192.168.0.1	255.255.255.0	N/A
		2001:DB8:1:1::1/64		N/A
	G0/2	2001:DB8:1:2::1/64		N/A
	S0/0/0	209.165.201.2	255.255.255.252	N/A
		2001:DB8:1:A001::2/64		N/A
	Link-local	FE80::1		N/A
Dual Stack Server	NIC	64.100.1.254	255.255.255.0	64.100.1.1
		2001:DB8:CAFE:1::10/64		FE80::A
DNS Server	NIC	64.100.1.254	255.255.255.0	64.100.1.1
		2001:DB8:CAFE:1::10/64		FE80::A
PC1	NIC	10.10.1.2	255.255.255.0	10.10.1.1
PC2	NIC	192.168.0.2	255.255.255.0	192.168.0.1
		2001:DB8:1:1::2/64		FE80::1
PC3	NIC	2001:DB8:1:2::2/64		FE80::1

Objectives

Part 1: Troubleshoot First Issue

Part 2: Troubleshoot Second Issue

Part 3: Troubleshoot Third Issue

Scenario

You are a network technician working for a company that has decided to migrate from IPv4 to IPv6. In the interim, they must support both protocols (dual-stack). Three co-workers have called the help desk with problems and have received limited assistance. The help desk has escalated the matter to you, a Level 2 support technician. Your job is to locate the source of the problems and implement appropriate solutions.

Part 1: Troubleshoot First Issue

A customer using PC1 complains that she cannot access the dualstackserver.pka web page.

Step 1: Verify a detailed help desk ticket.

The help desk collected the following information from the customer, over the phone. Verify that it is correct.

Help Desk Ticket
Client Identifier: PC1
Issue: Unable to access the dualstackserver.pka web page.
Detailed information about the issue
Test: Does the computer have an IP address using ipconfig?	Yes
Test: Can the computer contact its gateway using ping?	Yes
Test: Can the computer contact the server using tracert?	Yes
Test: Can the computer contact the server using nslookup?	No
Resolution: Escalate to Level 2 support.

Step 2: Consider probable causes for the failure.

1. Note the tests that have been conducted. If possible, discuss possible scenarios that would create this situation with your fellow network technicians (classmates).
2. Run more tests if it helps visualize the problem. Simulation mode is available.

Step 3: Propose a solution to solve the problem.

Make a list of things that could be changed to solve this problem. Start with the solution that is most likely to work.

Step 4: Implement the plan.

Try the most likely solution from the list. If it has already been tried, move on to the next solution.

Step 5: Verify the solution resolved the problem.

1. Repeat the tests from the help desk ticket. Did it solve the problem?
2. If the problem still exists, reverse the change if you are not sure it is correct and return to Step 4.

Step 6: Document the solution.

Record the solution to the problem. If you ever encounter the same problem again, your notes will be very valuable. PC1 IPv4 DNS address is incorrect.

Part 2: Troubleshoot Second Issue

A customer using PC2 complains that he cannot access files on the DualStackServer.pka at 2001:DB8:CAFE:1::10.

Step 1: Verify a detailed help desk ticket.

The help desk collected the following information from the customer, over the phone. Verify that it is correct.

Help Desk Ticket
Client Identifier: PC2
Issue: Unable to access the FTP service of 2001:DB8:CAFE:1:10.
Detail information about the Issue
Test: Does the computer have an IPv6 address using ipv6config?	Yes
Test: Can the computer contact its gateway using ping?	Yes
Test: Can the computer contact the server using tracert?	No
Resolution: Escalate to Level 2 support.

Step 2: Complete Steps 2 to 5 from Part 1 for this problem.

Step 3: Document the solution.

Record the solution to the problem. If you ever encounter the same problem again, your notes will be very valuable. DualStackServer.pka IPv6 gateway address is incorrect

Part 3: Troubleshoot Third Issue

A customer using PC3 complains that he cannot communicate with PC2.

Step 1: Verify a detailed help desk ticket.

The help desk collected the following information from the user over the phone. Verify that it is correct.

 

Help Desk Ticket
Client Identifier: PC3
Issue: Unable to communicate with PC2.
Detail information about the Issue
Test: Does the computer have an IP address using ipconfig?	Yes
Test: Does computer have an IPv6 address using ipv6config?	Yes
Test: Can the computer contact its IPv4 gateway using ping?	No
Test: Can the computer contact its IPv6 gateway using ping?	Yes
Test: Can the computer contact the IPv4 client using tracert?	No
Test: Can the computer contact the IPv6 client using tracert?	Yes
Resolution: Escalate to Level 2 support.

Step 2: Complete Steps 2 to 5 from Part 1 for this problem.

Step 3: Document the solution.

Record the solution to the problem. If you ever encounter the same problem again, your notes will be very valuable. PC2 IPv4 gateway address is incorrect