19

Configuration: VLAN

19.1 Overview

This section provides information for VLAN in Configuration.

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 on the same network.

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.

19.1.1What You Can Do in this Chapter

The VLAN screen (Section 19.2 on page 107) displays VLAN, port, and VLAN port settings.

The Guest VLAN screen (Section 19.3 on page 112) displays the global and port settings of the Switch.

The Voice VLAN screen (Section 19.4 on page 114) displays the global, OUI, and port settings of the Switch.

 

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