A Virtual Local Area Network (VLAN) is a logical group of network elements, such as workstations, servers, and network devices spanning various physical networks. A VLAN overlays a virtual layer-2 network on top of a physical layer-2 network by inserting a VLAN tag in the layer-2 header of a packet. VLAN-aware network devices, such as switches, can send packets through the VLAN overlay.

Tag a VLAN to distinctly identify the VLAN as part of a logically different layer-2 network.

The first step for VLAN tagging is to create a VLAN interface. The packets leaving and entering Avaya SBC on a VLAN use a physical link connected to a physical interface.

The second step is to configure all networks to which Avaya SBC connects. Each network to which Avaya SBC connects is defined and attached to an interface.