ZyXEL Communications NWA 1121-NI - User Manual Download

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Chapter 6 Wireless LAN

NWA1121-NI User’s Guide

The following table describes the labels in this screen.

Table 13

Wireless LAN > Wireless Settings: MBSSID

LABEL

DESCRIPTION

Basic Settings

Wireless LAN
Interface

Select the check box to turn on the wireless LAN on the NWA1121-NI.

Operation Mode

Select

MBSSID

from the drop-down list.

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

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.

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.

Select SSID
Profile

The SSID (Service Set IDentifier) identifies the Service Set with which a wireless station is
associated. Wireless stations associating to the access point (AP) must have the same
SSID. You can have up to eight SSIDs active at the same time.

Note: If you are configuring the NWA1121-NI from a computer connected to the wireless

LAN and you change the NWA1121-NI’s SSID or security settings, you will lose your
wireless connection when you press

Apply

to confirm. You must then change the

wireless settings of your computer to match the NWA1121-NI’s new settings.

This is the index number of each SSID profile.

Activve

Select the check box to enable an SSID profile. Otherwise, clear the check box.

Profile

Select an

SSID Profile

from the drop-down list box.

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%

12.5%

. See the product

specifications for more information on your NWA1121-NI’s output power.