Switching Basics and Intermediate Routing - VIRTUAL LANs

VLANs logically segment switched networks based on the functions, project teams, or applications of the organization regardless of the physical location or connections to the network. All workstations and servers used by a particular workgroup share the same VLAN, regardless of the physical connection or location.
Configuration or reconfiguration of VLANs is done through software. Physically connecting or moving cables and equipment is unnecessary when configuring VLANs.