3com 3800 ユーザーズマニュアル

Setting up Virtual Local Area Networks (VLANs) on the Switch 3800 
eases many time-consuming tasks of network administration while 
increasing efficiency in network operations.

This chapter describes the VLAN concepts and explains how to 
implement VLANs on the Switch 3800.

A VLAN is a group of location- and topology-independent devices, for 
example a group of users (workstations) and the server to which they 
connect, that communicate as if they are on the same physical LAN. 
This means that LAN segments are not restricted by the hardware that 
physically connects them. The segments are defined by flexible user 
groups that you create with the command-line interface.

Implementing VLANs on your networks has the following advantages:

■

With traditional networks, network administrators spend much of 
their time dealing with moves and changes. If users move to a 
different subnetwork, the addresses of each endstation must be 
updated manually.

For example, with a VLAN, if an endstation in VLAN Marketing is 
moved to a port in another part of the network, and retains its 
original subnet membership, you only need to specify that the new 
port is in VLAN Marketing.

SW3800.BK  Page 1  Tuesday, May 5, 1998  5:20 PM