HP (Hewlett-Packard) T1453-90001 Network Hardware User Manual


 
What are HP-UX VLANs?
Chapter 1 11
VLANs create broadcast domains using switches instead of routers.
While VLANs in some environments may reduce the number of routers
needed (and their latency), you still need a router if you want the VLANs
to communicate with each other.