ZyXEL Communications Corporation NWA1121NI Manuel D’Utilisation

 Chapter 6 Wireless LAN

NWA1121-NI User’s Guide

Wireless Mode

Select 802.11b/g to allow both IEEE802.11b and IEEE802.11g compliant WLAN devices 
to associate with the NWA1121-NI. The transmission rate of your NWA1121-NI might be 
reduced.

Select 802.11b/g/n to allow IEEE802.11b, IEEE802.11g and IEEE802.11n compliant 
WLAN devices to associate with the NWA1121-NI. The transmission rate of the NWA1121-
NI might be reduced.

Select 802.11n to allow only IEEE802.11n compliant WLAN devices to associate with the 
NWA1121-NI. 

Channel

Select the operating frequency/channel depending on your particular region from the 
drop-down list box. 

Channel Width 

This field displays only when you select 802.11n or 802.11b/g/n in the Wireless Mode 
field. 

A standard 20MHz channel offers transfer speeds of up to 150Mbps whereas a 40MHz 
channel uses two standard channels and offers speeds of up to 300Mbps. However, not all 
devices support 40MHz channels.

Select the channel bandwidth you want to use for your wireless network.

It is recommended that you select 20/40MHz. This allows the NWA1121-NI to adjust the 
channel bandwidth depending on network conditions.

Select 20MHz if you want to lessen radio interference with other wireless devices in your 
neighborhood 

or the wireless clients do not support channel bonding.

Universal Repeater Settings

The Universal repeater function allows the NWA1121-NI in root AP or repeater mode to set up a wireless 
connection between it and another NWA1121-NI in root AP or repeater mode.

 

Note: 

Universal repeater security

 is independent of the security settings between the NWA1121-NI and any 

wireless clients.

Local MAC 
Address

Local MAC Address is the MAC address of your NWA1121-NI. 

Universal 
Repeater SSID 
Profile

Select the SSID profile you want to use for 

universal repeater connections

 

with an AP or 

repeater or regular wireless connections with wireless clients

.

Note: You can only configure None, WPA-PSK or WPA2-PSK security mode for the SSID 

used by a universal repeater connection

.

Root MAC 
Address 

Specify the peer device’s MAC address. 

The peer device can be a NWA1121-NI in either 

root AP mode or repeater mode.

Advanced Settings

Beacon Interval

When a wirelessly network device sends a beacon, it includes with it a beacon interval. 
This specifies the time period before the device sends the beacon again. The interval tells 
receiving devices on the network how long they can wait in lowpower mode before waking 
up to handle the beacon. A high value helps save current consumption of the access point.

DTIM Interval

Delivery Traffic Indication Message (DTIM) is the time period after which broadcast and 
multicast packets are transmitted to mobile clients in the Active Power Management 
mode. A high DTIM value can cause clients to lose connectivity with the network. 

Output Power 

Set the output power of the NWA1121-NI in this field. If there is a high density of APs in 
an area, decrease the output power of the NWA1121-NI to reduce interference with other 
APs. Select one of the following Full (Full Power), 50%, 25% or 12.5%. See the product 
specifications for more information on your NWA1121-NI’s output power.

Wireless LAN > Wireless Settings: Repeater (continued)