🧱 Network Topology

![Network Topology](topology_diagram.png)

- **Area 1 and Area 2**: Each has 3 switches — 1 core switch and 2 access switches
- Each PC is connected to access switches, grouped into:
- VLAN 10: Sales
- VLAN 20: IT
- VLAN 30: Marketing
- Each router performs inter-VLAN routing and DHCP
- NAT is configured at edge routers for internet access
- ISP router connects both branches via OSPF Area 0

📁 Files

File	Description
Area1.pkt	Cisco Packet Tracer file for Area 1
Area2.pkt	Cisco Packet Tracer file for Area 2
EnterpriseNetwork.pkt	Complete integrated topology
topology_diagram.png	Network topology diagram
enterprise network commands.pdf	CLI Commands for devices

⚙️ Technologies Used

Cisco Packet Tracer
OSPF (Multi-Area)
VLANs & Inter-VLAN Routing
NAT Overload
DHCP
Access Control Lists (ACLs)

🚀 How to Use

1. Open `.pkt` files in Cisco Packet Tracer
2. View the topology and device configurations
3. Simulate ping, routing, DHCP, or NAT functionality
4. Modify or expand with security features (e.g., ACLs, Port Security)

👨‍💻 Author

Adnan Mohammed Ali
📫 [LinkedIn](https://www.linkedin.com/in/adnan-ali-0312b8251)

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📌 Note

This project is part of a self-directed CCNA lab to demonstrate proficiency in enterprise networking, subnetting with VLSM, routing protocols, and Layer 2/3 design.

madnan4/enterprise-network-simulation

Enterprise Network Simulation (Cisco Packet Tracer)