skyzo-sa/redundant-campus-network-lab

Redundant Campus Network Lab is a step-by-step networking lab guide for building a simulated enterprise campus network with built-in redundancy. It is designed as a hands-on learning resource for people studying network administration or preparing for certifications like CCNA and CCNP. The lab walks you through configuring a three-switch network connected to two PCs, all running inside EVE-NG, a tool that simulates network hardware virtually so you do not need physical equipment. The topology is set up so that no single cable failure can take the whole network offline, which is what "redundant" means here. The configuration covers several core concepts. VLANs, or Virtual Local Area Networks, divide the physical network into separate logical segments, here labeled SALES, ENGINEERING, HR, and MANAGEMENT, so that traffic from each group stays isolated. Trunk links carry traffic from multiple VLANs across a single cable between switches. EtherChannel bundles two physical links between switches into one logical link for higher throughput and resilience: if one cable fails, the other keeps things running. Spanning Tree Protocol prevents network loops and is configured to elect one switch as the root bridge for predictable traffic paths. The guide includes exact CLI commands for each step, verification commands to confirm things are working, and a troubleshooting checklist for when they are not. Optional challenge tasks cover inter-VLAN routing and port security. It uses Cisco IOS CLI and Cisco Catalyst switches. The full README is longer than what was shown.