I recently bought my first-ever managed networking switch, a TP-Link JetStream TL-SG3428X. The main feature of a managed switch is that it lets you segment your network into VLANs. I was excited about this functionality, but it took me hours of trial and error to get VLANs working. I found TP-Link’s VLAN documentation lacking, so I’m sharing my notes in case they’re helpful to others. Background If you’re not familiar with VLANs, my favorite explainer is Raid Owl’s video on the subject.