3com 3000 TX Benutzerhandbuch
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5
A
DVANCED
M
ANAGEMENT
Virtual LANs (VLANs)
Setting up Virtual Local Area Networks (VLANs) on
the Switch 3000 TX provides you with less time-con-
suming network administration and more efficient
network operation.
the Switch 3000 TX provides you with less time-con-
suming network administration and more efficient
network operation.
The following sections explain more about the con-
cept of VLANs and explain how they can be imple-
mented on the Switch 3000 TX.
cept of VLANs and explain how they can be imple-
mented on the Switch 3000 TX.
What are VLANs?
A VLAN is defined as a group of location- and
topology-independent devices that communicate as
if they are on the same physical LAN. This means
that LAN segments are not restricted by the hard-
ware which physically connects them; the segments
are defined by flexible user groups that you create
using software.
topology-independent devices that communicate as
if they are on the same physical LAN. This means
that LAN segments are not restricted by the hard-
ware which physically connects them; the segments
are defined by flexible user groups that you create
using software.
With VLANs, you can define your network according
to:
to:
■
Departmental
groups — For example, you can
have one VLAN for the Marketing department,
another for the Finance department, and
another for the Development department.
another for the Finance department, and
another for the Development department.
■
Hierarchical groups — For example, you can
have one VLAN for directors, another for manag-
ers, and another for general staff.
have one VLAN for directors, another for manag-
ers, and another for general staff.
■
Usage Groups — For example, you can have
one VLAN for users of e-mail, and another for
users of multimedia.
one VLAN for users of e-mail, and another for
users of multimedia.
Benefits of VLANs
Implementing VLANs on your network has three
main advantages:
main advantages:
■
It eases the change and movement of devices on
IP networks
IP networks
■
It helps to control broadcast traffic
■
It provides extra security