15

VLAN

This chapter describes how to view VLAN status, add and edit VLANs and how to use the VLAN template. The type of screen you see here depends on the VLAN Type you selected in the Switch Setup screen.

15.1 Introduction to VLANs

A VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical networks. Devices on a logical network belong to one group. A device can belong to more than one group. With VLAN, a device cannot directly talk to or hear from devices that are not in the same group(s); the traffic must first go through a router.

In MTU (Multi-Tenant Unit) applications, VLAN is vital in providing isolation and security among the subscribers. When properly configured, VLAN prevents one subscriber from accessing the network resources of another on the same LAN, thus a user will not see the printers and hard disks of another user in the same building.

VLAN also increases network performance by limiting broadcasts to a smaller and more manageable logical broadcast domain. In traditional switched environments, all broadcast packets go to each and every individual port. With VLAN, all broadcasts are confined to a specific broadcast domain.

Note that VLAN is unidirectional; it only governs outgoing traffic.

15.2 Configuring 802.1Q VLAN

Follow the steps below to set the 802.1Q VLAN Type on the switch.

1In the Device Panel list, select a device and then right-click.

2Click Configuration > Switch Configuration > Switch Setup.

3Select 802.1Q as the VLAN Type and then click Apply.

Figure 110 Selecting a VLAN Type

4Click Configuration > VLAN Configuration to display the configuration screen.

 

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NetAtlas Workgroup User’s Guide