Avaya P333R-LB 사용자 설명서

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Chapter 11
Avaya P330 Layer 2 Features
62
Avaya 
P333R-LB User’s Guide
VLAN Configuration
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 11.1
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 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.
VLANs should be used whenever there are one or more groups of network users 
that you want to separate from the rest of the network.
In Figure 11.2, the switch has three separate VLANs: Sales, Engineering, and