ToughNet NAT Router User's Manual
TN-5916 Series Features and Functions
3-16
Benefits of VLANs
The main benefit of VLANs is that they provide a network segmentation system that is far more flexible than
traditional networks. Using VLANs also provides you with three other benefits:
•
VLANs ease the relocation of devices on networks:
With traditional networks, network administrators
spend much of their time dealing with moves and changes. If users move to a different sub-network, the
addresses of each host must be updated manually. With a VLAN setup, if a host originally on VLAN
Marketing, for example, is moved to a port on another part of the network, and retains its original subnet
membership, you only need to specify that the new port is on VLAN Marketing. You do not need to do any
re-cabling.
•
VLANs provide extra security:
Devices within each VLAN can only communicate with other devices on
the same VLAN. If a device on VLAN Marketing needs to communicate with devices on VLAN Finance, the
traffic must pass through a routing device or Layer 3 switch.
•
VLANs help control traffic:
With traditional networks, congestion can be caused by broadcast traffic that
is directed to all network devices, regardless of whether or not they need it. VLANs increase the efficiency
of your network because each VLAN can be set up to contain only those devices that need to communicate
with each other.
Managing a VLAN
A new or initialized Moxa ToughNet NAT Router contains a single VLAN—the Default VLAN. This VLAN has the
following definition:
•
VLAN Name
—Management VLAN
•
802.1Q VLAN ID
—1 (if tagging is required)
All of the ports are initially placed on this VLAN, and it is the only VLAN that allows you to access the
management software of the Moxa switch over the network.
Configuring Virtual LAN
To configure
802.1Q VLAN
on the Moxa switch, use the
802.1Q VLAN Settings
page to configure the ports.
