Name: _____________________________________ Ÿ 1. Build the following network in GNS3 as shown in the figure below. Ÿ 2. Using the tables below, configure the router and the interfaces as shown below. R1 PC1 PC2 PC3 Ÿ 3. Verify that all hosts can ping each other. If you can’t ping troubleshoot the problem before continuing with the lab. The ability to ping is a prerequisite to continuing the lab. Ÿ 4. Configure the access list based on the information show below. 1 Deny On the R1 router, type the following to stop access from PC2. Ÿ 5. Can PC2 ping PC3? _________________________________ Why? ____________________________________________________ Ÿ 6. Apply the access to the interface gi0/0. Ÿ 7. Can PC2 ping PC3? _________________________________ Ÿ 8. Can PC1 ping PC3? Why? ____________________________________________________ Ÿ 9. Add the following command to R1: Ÿ 7. Can PC2 ping PC3? _________________________________ Ÿ 8. Can PC1 ping PC3? _________________________________ Ÿ 9. Run the following command Ÿ 10. Take a screenshot of the result and paste it here.

Assignment: Troubleshooting Network Connectivity

In this lab, we will be building a network in GNS3 and configuring various devices within the network. Our goal is to verify that all hosts can successfully ping each other, troubleshoot any issues that arise, and apply necessary access control measures.

Network Topology:
The network topology for this lab is shown in the figure below:
[Insert Network Topology Figure]

Configuring the Router and Interfaces:
Using the given information, we will configure the R1 router and the interfaces as specified. The configurations are as follows:

R1 Configuration:
– IP address: on interface gi0/0
– IP address: on interface gi0/1

PC1 Configuration:
– IP address:
– Default gateway:

PC2 Configuration:
– IP address:
– Default gateway:

PC3 Configuration:
– IP address:
– Default gateway:

Verifying Connectivity:
After configuring the router and interfaces, we need to verify that all hosts can successfully ping each other. Pinging serves as a prerequisite for further troubleshooting and lab continuation. Therefore, it is crucial to ensure that ping connectivity is established.

Apply Access List:
We are now required to configure an access list to restrict access from PC2 to the network. The access list is as follows:

Access List Configuration:
– Deny

To implement this access list on the R1 router, we need to apply it to the appropriate interface (in this case, gi0/0).

Ping Connectivity:
We will now assess the ping connectivity between various hosts to evaluate the impact of the access list implementation.

Can PC2 ping PC3?
To determine if PC2 can successfully ping PC3, we need to consider the implications of the access list. The access list is configured to deny access from (PC2). Therefore, PC2 will not be able to ping PC3, as the access list restricts the communication.

Next Steps:
To further proceed with troubleshooting and evaluation, we need to assess the impact of the access list on other host pairs.

Can PC1 ping PC3?
The ability of PC1 to ping PC3 depends on the access list that has been applied to the interface. If the access list allows access from PC1 (, PC1 will be able to ping PC3. However, if the access list denies access from PC1, then ping connectivity will not be established.

Based on the previous analysis, we need to continue with the lab by running the appropriate command and capturing the result. This will help us understand the state of network connectivity and troubleshoot any potential issues.

Please proceed to run the command and take a screenshot of the results, then paste it in the space provided.

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