Managing a network without a clear map can feel like navigating a maze blindfolded. Cables tangled, devices misplaced, and troubleshooting taking hours instead of minutes. That’s where a physical network diagram comes in. This guide will show you exactly what a physical network diagram is, why it matters, and how to create one step by step. You’ll also learn about its key components, common topologies, best practices, and ready-to-use templates that make diagramming fast, accurate, and visually intuitive.