ZyXEL Communications Corporation NWA1121NI Manuel D’Utilisation

 Chapter 8 VLAN

NWA1121-NI User’s Guide

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. 

The IEEE 802.1Q standard defines an explicit VLAN tag in the MAC header to identify the VLAN 
membership of a frame across bridges. A VLAN tag includes the 12-bit VLAN ID and 3-bit user 
priority. The VLAN ID associates a frame with a specific VLAN and provides the information that 
devices need to process the frame across the network. 

Use this screen to set up the VLAN for managing the NWA1121-NI.

 Click Network > VLAN to 

display the screen as shown.

Network > VLAN

The following table describes the labels in this screen.

Network > VLAN

LABEL

DESCRIPTION

802.1Q VLAN 

Select this to enable VLAN tagging on the NWA1121-NI.

Management VLAN

Select this to enable VLAN management. Only traffic tagged with the management 
VLAN ID can access the NWA1121-NI. At least one device in your network must 
belong to the VLAN specified below in order to manage the NWA1121-NI.

Management VLAN ID

Enter a number from 1 to 4094 to 

define the NWA1121-NI’s management VLAN 

group

. 

Apply

Click Apply to save your changes.

Cancel

Click Cancel to begin configuring this screen afresh.