Setting Up a Computer Network with a Dedicated DHCP Server

Introduction

• Tutorial on setting up a computer network using a dedicated DHCP server.
• Using Cisco Packet Tracer for the configuration.

Environment Setup

• Components needed:
  • Router: Using the Cisco 2911 model.
  • Switches: Two switches for this tutorial.
  • Server: Dedicated DHCP server.
  • Computers: Multiple PCs to connect to the network.

Step-by-Step Configuration

1. Setting Up Components

• Router: Start with the 2911 router.
• Switches: Add two switches to the layout.
• Server: Rename the server to "DHCP".
• Computers: Add several PCs for connection.
• Connections: Use automatic connections for simplicity.

2. Configuring Switches

• Switch 0 IP Address: 192.168.10.10 (D0)
• Switch 1 IP Address: 192.168.20.10 (D1)

3. Configuring the Server

• Server IP Address: 192.168.10.2
• Default Gateway: 192.168.10.10
• DHCP Pool Configuration:
  • Switch 1 Settings:
    • Name: "Switch 1"
    • Starting IP Address: 192.168.10.3
    • Maximum Users: 20
  • Switch 2 Settings:
    • Name: "Switch 2"
    • Starting IP Address: 192.168.20.2

4. Configuring the Router

• Access the router's CLI (Command Line Interface).
• Configure interfaces for the switches:
  • For Switch 1 (G0/0): 192.168.10.1
  • For Switch 2 (G0/1): 192.168.20.1
• Set the IP helper address to the DHCP server's IP (192.168.10.2).
• Save the configuration using do write memory.

5. Configuring PCs

• Each PC should be set to use DHCP for IP configuration.
• Ensure that PCs receive unique IP addresses from the DHCP server.

6. Testing the Network

• Use ping commands to test connectivity:
  • Test from PC1 to other devices.
  • Confirm successful communication with the DHCP server.

7. Simulation and Packet Analysis

• In simulation mode, observe packet headers and ensure proper communication.
• Switch back to real-time to see IP address assignments in action.

Conclusion

• Summary of configuring a network with multiple switches and computers using a static DHCP server.
• Instructions on expanding the network with additional switches by following similar configuration steps.