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Benefits of VLANs
Implementing VLANs on your network has three main advantages:
■
It eases the change and movement of devices on IP networks
With traditional IP networks, network administrators spend much of
their time dealing with moves and changes. If users move to a different
IP subnet, the IP addresses of each workstation must be updated
manually.
With a VLAN setup, if a workstation on VLAN 1 is moved to a port in
another part of the network, the network administrator only needs to
configure the new port to belong to VLAN 1.
■
It helps to control broadcast traffic
With traditional networks, congestion can be caused by broadcast
traffic which is directed to all network devices whether they require it
or not. VLANs increase the efficiency of your network because each
VLAN can be set up to contain only those devices which need to
communicate with each other.
■
It provides extra security
Devices within each VLAN can only communicate with devices in the
same VLAN. If a device in VLAN 1 needs to communicate with devices
in VLAN 2, the traffic must cross a router.