GNS3_Lab2

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CUNY John Jay College of Criminal Justice *

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379

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Computer Science

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Jan 9, 2024

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docx

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Uploaded by CaptainGoose1979

Title of Experiment: GNS3 Lab 2: Simple network Topology Date of Experiment Performed: Instructor Comments: Date of Report Submitted: Names of Group Members: Grade: Introduction: GNS3 is a network simulation software that allows you to create complex network topologies and simulate different network devices like routers, switches, and firewalls. In this lab, you will use GNS3 to create a network topology consisting of three routers and four switches. Materials:

1. GNS3 software installed on your computer 2. Three router images (such as Cisco IOS images) 3. Four switch images (such as Cisco IOS images) 4. Eight VPCs 5. Ethernet cables to connect devices Instructions: 1. Open GNS3 and create a new project. 2. Add three routers and four switches to your topology. To do this, click on the "Router" and "Switch" icons in the toolbar and drag them to the workspace area. You can also use the "Add a node" button in the toolbar. 3. Connect the devices using Ethernet cables. Your network should look like the picture below. 4. Configure the routers and PCs with appropriate IP addresses 5. Test the connectivity PC1 and PC2. Are they able to ping each other? a. We were not able to successfully test anything due to servers moving too slowly 6. Test the connectivity PC3 and PC4. Are they able to ping each other? 7. Test the connectivity PC1 and PC3. Are they able to ping each other? 8. Test the connectivity PC1 and PC8. Are they able to ping each other? 9. Setup static routes on all three routers 10. Retry steps 5 to 8. Are your answers different now? Conclusion: In this lab, you have learned how to create a network topology with GNS3 and configure routers and switches with IP addresses and routing protocols. You have also tested the connectivity between the devices by pinging them from one another. GNS3 is a powerful tool for network simulation and can be used to create more complex topologies for testing and learning purposes.

Procedure: List all the commands you needed to use to configure your routers and PCs. Router commands: 1) Router# config 2) Router (config)# interface gigabitethernet 0/0 3) Router (config-if)# ip address 10.5.1.1 255.255.255.0 4) Router (config-if)# no shutdown 5) Router (config-if)# exit Repeat 2 to 5 for all 3 interfaces, taking care to allocate appropriate ip addresses Check all your interfaces Router# show interfaces Check all your routes Router# show ip route Check connectivity Router# ping <ip address> Set up static route Router (config)# ip route destination_ subnet_address mask Next_hop_ip_address Example: Router(config)# ip route 192.168.1.0 255.255.0.0 10.10.10.2 copy running-config startup-config and then save the project PC commands: 1) PC1# ip <ip address> <mask> <gateway> Example : (Assuming this PC is connected to the router interface which has an ip address 192.168.1.1) PC1# ip 192.168.1.2 255.255.255.0 192.168.1.1

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