Enterprise Network Design & Inter-VLAN Routing (Cisco Packet Tracer)

Independently designed, configured, and troubleshot a complete virtual enterprise network topology using Cisco Packet Tracer. This project demonstrates hands-on expertise in network segmentation, secure data routing, and infrastructure troubleshooting.

Technical Scope & Implementations:

VLAN Segmentation: Designed and deployed three isolated Virtual Local Area Networks (VLANs) for the HR, IT, and Sales departments to ensure organized traffic flow and broadcast domain isolation.

Switching & Port Configuration: Assigned end devices to their respective VLANs via access ports, and established IEEE 802.1Q trunk links to carry multi-VLAN traffic between the switches and the router.

Inter-VLAN Routing: Implemented a "Router-on-a-Stick" architecture by configuring router subinterfaces with Dot1Q encapsulation, enabling seamless and controlled communication across the isolated networks.

Network Troubleshooting: Actively diagnosed and resolved Layer 2 trunking and VLAN mismatch configuration errors.

Connectivity Validation: Verified full network stability, correct routing tables, and cross-VLAN reachability using end-to-end ICMP (Ping) testing.

Technologies & Protocols: Cisco Packet Tracer, Cisco IOS, Routing & Switching, VLANs, IEEE 802.1Q, Router-on-a-Stick, ICMP.