📘 SmartTech International Enterprise Network

📌 Overview

This project presents the network design and configuration for SmartTech International, a multi-branch enterprise operating across several geographical locations. The network is designed to support scalability, reliability, and efficient resource sharing among all branches.

The implementation follows enterprise networking best practices, combining dynamic and static routing, centralized services, and an optimized IP addressing scheme.

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🏢 Network Locations

The enterprise network connects six sites:

• Cairo — Headquarters (HQ)
• Dubai — Regional Office
• Alexandria — Server Farm / IT Center
• Port Said — HR Department
• Aswan — Marketing Department
• Luxor — Customer Service Department

Cairo HQ acts as the central hub for all branch connectivity.

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🌐 Network Topology

• Topology Type: Hub-and-Spoke
• Central Hub: Cairo HQ
• WAN Links: Serial DCE/DTE connections between sites

This topology simplifies management while ensuring reliable inter-branch communication.

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🔁 Routing Design

• Dynamic Routing: OSPF (Open Shortest Path First)

  • Implemented between Cairo, Dubai, and Alexandria
  • Provides fast convergence and scalability

• Static Routing:

  • Used for smaller branches (Port Said, Aswan, Luxor)
  • Default routes point to Cairo HQ

• Route Redistribution:

  • Static routes are redistributed into OSPF at Cairo

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🧮 IP Addressing Scheme

• Private Address Space: 172.16.0.0 /16
• Subnetting Method: VLSM (Variable Length Subnet Masking)

Location	Department	Hosts	Network	CIDR
Cairo	Operations & Finance	1000	172.16.0.0	/22
Dubai	Management	500	172.16.4.0	/23
Alexandria	Server Farm / IT	200	172.16.6.0	/24
Port Said	HR	120	172.16.7.0	/25
Aswan	Marketing	60	172.16.7.128	/26
Luxor	Customer Service	50	172.16.7.192	/26

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🛠️ Network Services

• DNS Server: Alexandria (172.16.6.2)
  • Resolves smarttech.com and mail.smarttech.com
• Web Server (HTTP/HTTPS): Alexandria (172.16.6.3)
• Mail Server (SMTP/POP3): Dubai (172.16.4.2)
• DHCP:
  • Each router provides DHCP services for its local LAN
  • Supplies IP address, default gateway, and DNS settings

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⚙️ Configuration Highlights

• OSPF enabled on core routers (Cairo, Dubai, Alexandria)
• Static default routes on branch routers
• DHCP pools configured per site
• WAN serial interfaces configured with /30 subnets

The configuration ensures centralized services with distributed access.

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🔐 Testing & Verification

Connectivity and functionality were verified using:

1. Ping — End-to-end connectivity between all branches
2. Traceroute — Traffic flow through Cairo HQ
3. DNS Lookup — Domain resolution testing
4. Web Access — Successful HTTP access via domain name
5. Email Testing — SMTP/POP3 communication between branches

All tests were successful.

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✅ Conclusion

The SmartTech International enterprise network was successfully designed and implemented using a hybrid routing approach. The solution supports over 2000 hosts across multiple cities while providing secure and reliable access to centralized services.

The design is scalable, efficient, and suitable for real-world enterprise environments.

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👩‍💻 Team Members

• Aysha Ahmed Kassem
• Mohamed Kamal Mohamed
• Nada Khamis Etman
• Ali Tamer Ali
• Abdelrahman Mostafa

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📄 License

This project is developed for educational and academic purposes.