Layer: Tech Notes

Documentation, IPAM, diagrams, tooling habits and the odds and ends of running a network.

Documenting your network: diagrams, IPAM and the spreadsheet that will not die

September 15, 2026Ellen Hartigan

What to write down about your network, when a spreadsheet stops being enough, how to draw useful diagrams, and how to keep it all true.

January 20, 2026Ellen Hartigan

A good runbook is the calm colleague who is awake when you are not. A six-part template, writing tips, and a full example for a core uplink.