CCNA project:Each PC receives an IP address from DHCP. Devices in different VLANs can communicate with each other through Inter-VLAN Routing (done on the routers). OSPF dynamically shares routes between all routers, ensuring end-to-end reachability

I built and analyzed a routed network that demonstrates three core networking technologies:

VLANs (Virtual LANs)

Multiple VLANs (10, 20, 30, 40, 50, 60) are configured on the access switches.

Each VLAN represents a different subnet (e.g., VLAN10 → 192.168.10.0/24, VLAN20 → 192.168.20.0/24, etc.).

This setup segments broadcast domains, improves security, and organizes users into groups.

DHCP (Dynamic Host Configuration Protocol)

A centralized DHCP server is connected in the 192.168.100.0/24 network.

It automatically assigns IP addresses and default gateways to end devices in each VLAN.

This reduces manual IP configuration and ensures proper addressing for all PCs.

OSPF (Open Shortest Path First)

The routers (R0, R1, R2, R3) are running OSPF to provide dynamic routing.

OSPF advertises all VLAN subnets and inter-router links (10.0.0.x/30 networks).

This ensures full connectivity between all VLANs across different switches and routers.