Chapter 4 Avaya P460 Layer 2 Features
VLAN Configuration VLAN Overview
A VLAN is made up of a group of devices on one or more LANs that are
configured so the devices operate as if they form an independent LAN. These
devices can, in fact, be located on several different LAN segments. VLANs can be
used to group together departments and other logical groups, thereby reducing
network traffic flow and increasing security within the VLAN.
Figure 4.1 illustrates how a simple VLAN can connect several endpoints in different
locations and attached to different hubs. In this example, the Management VLAN
consists of stations on numerous floors of the building which are connected to both
Device A and Device B.
Figure 4.1 VLAN Overview
In virtual topological networks, the network devices can be located in diverse places
around the LAN. These devices can be in different departments, on different floors
or in different buildings. Connection is achieved through software. Each network
device is connected to a hub, and the network manager uses management software
to assign each device to a virtual topological network. Elements can be combined
into a VLAN even if they are connected to different devices.
You can use VLANs whenever there are one or more groups of network users that
you want to separate from the rest of the network.
20 Avaya P460 Configuration Guide