VLANs let you segment a network into multiple logical broadcast domains at Layer 2 of the network protocol stack. What to read next VLAN ConfigurationVirtual LANs (VLANs) enable a single physical LAN segment to be further isolated so that groups of ports are isolated from one another as if they were on physically different segments. Private VLANsPrivate VLANs are used to solve VLAN ID limitations by adding a further segmentation of the logical broadcast domain into multiple smaller broadcast subdomains.