VLAN Configuration and Inter-VLAN Routing

Project Overview

This project demonstrates the configuration of VLANs and Inter-VLAN Routing using Cisco devices. The network topology includes both a Layer 2 switch and a Layer 3 switch to illustrate the differences in VLAN handling, routing capabilities, and traffic management.

Objective:

• To configure VLANs on a Layer 2 switch and show that devices on different VLANs cannot communicate without routing.
• To configure Inter-VLAN Routing using a Layer 3 switch and allow devices on different VLANs to communicate.

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Network Topology

• Devices:

  • PC1 (VLAN 10: Sales) → 192.168.10.10
  • PC2 (VLAN 20: HR) → 192.168.20.10
  • Layer 2 Switch (for VLAN configurations)
  • Layer 3 Switch (for Inter-VLAN Routing)
  • Router (only used in Layer 2 scenario for Router-on-a-Stick)

• VLANs:

  • VLAN 10 (Sales): 192.168.10.0 /24
  • VLAN 20 (HR): 192.168.20.0 /24

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Files Included

• VLAN Configuration File (vlan-config.txt): This file contains all the necessary configuration commands to set up VLANs on the switches.
• Inter-VLAN Routing Packet Tracer File (inter-vlan-routing.pkt): Packet Tracer file demonstrating the working Inter-VLAN Routing configuration using a Layer 3 Switch.
• Layer 2 Configuration Packet Tracer File (layer-2.pkt): Packet Tracer file for the Layer 2 setup using Router-on-a-Stick for Inter-VLAN Routing.

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Configuration Steps

1. Layer 2 Switch Configuration (Without Routing)

In this scenario, the Layer 2 switch is used to configure the VLANs, and the router handles the Inter-VLAN routing.

• Configure VLANs 10 and 20 on the Layer 2 switch.
• Assign switch ports to the appropriate VLANs.
• Set up Router-on-a-Stick for routing between VLANs.

For detailed configuration commands, refer to the vlan-config.txt file.

2. Layer 3 Switch Configuration (With Inter-VLAN Routing)

A Layer 3 switch is used in this scenario, with SVIs (Switched Virtual Interfaces) configured to enable routing between VLANs.

• Enable IP routing on the Layer 3 switch.
• Create SVIs for VLAN 10 and VLAN 20.
• Assign IP addresses to each SVI (e.g., 192.168.10.1 for VLAN 10 and 192.168.20.1 for VLAN 20).
• Assign switch ports to VLANs and enable routing to allow inter-VLAN communication.

For the full configuration, refer to the vlan-config.txt file.

How to Use

1. Open the Packet Tracer files to visualize the network topology.
2. Apply the vlan-config.txt configuration to the switches.
3. Test connectivity:
   • In the Layer 2 switch setup, test the connectivity between the two PCs.
   • In the Layer 3 switch setup, test inter-VLAN communication.

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Requirements

• Cisco Packet Tracer version 7.0 or higher.
• Basic understanding of VLANs, Layer 2 switches, and Layer 3 switches.
• Understanding of IP Routing concepts.

Author

Ibraheem590

Feel free to reach out if you have any questions or suggestions for improvement!

Contributions

Contributions are welcome! Please open an issue or submit a pull request if you'd like to contribute.