Ospf Routing

Designed and implemented a two-site enterprise network connected through a backbone router, using Cisco Packet Tracer.

Key highlights:

Subnetted the 50.0.0.0/8 address block using VLSM to efficiently allocate IP addresses across 8 subnets

Created 7 VLANs across 8 switches with a consistent Native VLAN on all trunk links

Implemented Inter-VLAN Routing using Router-on-a-Stick across two main routers

Configured single-area OSPF (Area 0) between all three routers, with LAN-facing interfaces set as passive

Secured all devices with console/enable passwords, and enabled both Telnet and SSH for remote access

Verified full end-to-end connectivity through cross-VLAN ping tests and live Telnet/SSH sessions

Tools: Cisco Packet Tracer