A means of configuring devices (PCs) so that they can communicate as if they were attached to the same wire, when in fact they are located on a number of different LAN segments. Because VLANs are based on logical instead of physical connections they are extremely flexible, provide security through utilizing virtual private networking, and can be used to connect remote locations.
A mature network technology that allows local area networks (LANs) to overlap on a single backbone architecture. VLANs allow different departments in a building to "share" the same switch and not have special hardware dedicated to it.
A group of computers on a network whose software has been configured so that they behave as if they were on a separate Local Area Network (LAN). Computers on VLAN do not have to be physically located next to one another on the LAN. A VLAN can be set up as a temporary solution to allow a workgroup to use less network bandwidth and communicate more privately.