Managed vs Layer 3: Two Switch Axes, One Empty Box

Logosofia no Dia a Dia · Oct 10, 2026 · 23m

When you go shopping for a switch, the shelves hand you two vocabularies at once: managed versus unmanaged, and Layer 2 versus Layer 3. They sound related. They aren't. Managed describes whether you can configure the box; Layer 2 versus Layer 3 describes what the box is allowed to decide. Build the four-quadrant matrix and something surprising falls out — one of the four combinations is essentially a ghost. This episode walks the axes, populates all four boxes, explains why a Layer 3 unmanaged switch is close to self-contradictory, and then applies the whole framework to a real two-switch…