I've been tasked with doing a network diagram of our offices (8 in total) across two different cities. Our network is all on a single flat subnet (10.1.X.X / 255.0.0.0) and all sites are connected ...

Sadly, this tool was removed some time ago. Even so, it is possible to create a detailed network diagram using only Windows 11 and Microsoft Office (including tools such as Excel and Visio).