Avaya C360 Layer 2 Features
120 Installation and Configuration Guide Avaya C360 Multilayer Stackable Switches, version 4.5
VLANs
VLAN Overview
A VLAN is made up of a group of devices on one or more LANs that are configured so that they
operate as if they form an independent LAN, when in fact they may be located on a number of
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.
The figure below 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 and which are connected to both Device A and
Device B.
Figure 21: VLAN Overview
In virtual topological networks, the network devices may be located in diverse places around the
LAN-such as in different departments, on different floors or in different buildings. Connections
are made through software. Each network device is connected to a hub, and the network
Figure notes:
1. Management VLAN
2. Management LAN
3. R&D VLAN
4. Device A
5. Device B
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