This project is a multi-floor departmental network built using Cisco Packet Tracer. The configuration includes advanced network security, traffic optimization, and access control mechanisms to ensure a robust and scalable networking environment.

• VLANs segment network traffic, isolating departments for better security and performance.
• Each floor is assigned multiple VLANs, ensuring logical separation of traffic.

• DHCP assigns IP addresses dynamically to devices in different VLANs.
• Prevents IP conflicts and simplifies network administration.

• VLANs cannot communicate directly; thus, routers are configured with sub-interfaces to enable routing between VLANs.
• OSPF (Open Shortest Path First) protocol is used for dynamic routing.

• Restricts the number of MAC addresses allowed on switch ports.
• Helps prevent unauthorized access and MAC flooding attacks.

• Prioritizes network traffic based on predefined rules.
• Voice traffic (DSCP EF) is given high priority to ensure seamless communication.

• Replaces Telnet with SSH (Secure Shell) for encrypted access.
• AAA (Authentication, Authorization, Accounting) is implemented for secure login control.

• Protects the network from rogue DHCP servers by allowing only trusted DHCP responses.
• Helps prevent man-in-the-middle (MITM) attacks.

• To enhance network security and segmentation in large organizations.
• To optimize network traffic flow and reduce congestion.
• To ensure secure remote access and management of networking devices.
• To simplify IP address management with automated DHCP configurations.
• To implement network redundancy and failover mechanisms for reliability.

• 🏢 Corporate Offices: Used to separate different departments like HR, IT, and Finance.
• 🎓 Educational Institutions: Helps in segmenting student, faculty, and administrative networks.
• 🏥 Healthcare Systems: Isolates patient records from general hospital traffic for security compliance.
• 🛍️ Retail Chains: Ensures POS systems, inventory databases, and guest Wi-Fi networks are securely separated.
• 💾 Data Centers: Provides logical isolation of different server environments for better security and performance.

This departmental network is designed with scalability, security, and efficiency in mind. By implementing VLANs, OSPF routing, QoS, Port Security, DHCP Snooping, and Secure Management, this topology ensures a robust and secure networking environment for an enterprise.