Virtual LANs

Overview

• A Virtual LAN (VLAN) is a logical subgroup within a LAN, created using Switch and software rather than physically moving wiring.
• VLANs allow for the creation of a “network within a network”, even if employees and their workstations are dispersed throughout a building.

IEEE 802.1Q Standard

• The IEEE 802.1Q standard facilitates the creation of virtual LANs by enabling multiple devices to intercommunicate and work together.
• With 802.1Q-compliant switches, a network administrator can remotely configure VLANs, eliminating the need for physical cable management in a wiring closet.