User`s guide

Chapter 6 Wireless Configuration
NWA3550 User’s Guide
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The following table describes the general wireless LAN labels in this screen.
Table 21 Wireless: Access Point
LABEL DESCRIPTION
WLAN Interface Select which WLAN adapter you want to configure.
It is recommended that you configure the first WLAN adapter for AP functions and
use the second WLAN adapter for bridge functions.
Operating Mode Select Access Point from the drop-down list.
802.11 Mode Select 802.11b Only to allow only IEEE 802.11b compliant WLAN devices to
associate with the ZyXEL Device.
Select 802.11g Only to allow only IEEE 802.11g compliant WLAN devices to
associate with the ZyXEL Device.
Select 802.11b+g to allow both IEEE802.11b and IEEE802.11g compliant WLAN
devices to associate with the ZyXEL Device. The transmission rate of your ZyXEL
Device might be reduced.
Select 802.11a to allow only IEEE 802.11a compliant WLAN devices to associate
with the ZyXEL Device.
Super Mode Select this to improve data throughput on the WLAN by enabling fast frame and
packet bursting.
Choose
Channel ID
Set the operating frequency/channel depending on your particular region.
To manually set the ZyXEL Device to use a channel, select a channel from the drop-
down list box.
Click MAINTENANCE and then the Channel Usage tab to open the Channel
Usage screen to make sure the channel is not already used by another AP or
independent peer-to-peer wireless network.
To have the ZyXEL Device automatically select a channel, click Scan instead.
Scan Click this button to have the ZyXEL Device automatically scan for and select the
channel with the least interference.
Disable
channel
switching for
DFS
This field is available when you select 802.11a in the 802.11 Mode field.
DFS (dynamic frequency selection) allows an AP to detect other devices in the
same channel. If there is another device using the same channel, the AP changes
to a different channel, so that it can avoid interference with radar systems or other
wireless networks.
Select this option to disable DFS on the ZyXEL Device when 802.11 Mode is set to
802.11a.
RTS/CTS
Threshold
The threshold (number of bytes) for enabling RTS/CTS handshake. Data with its
frame size larger than this value will perform the RTS/CTS handshake. Setting this
attribute to be larger than the maximum MSDU (MAC service data unit) size turns
off the RTS/CTS handshake. Setting this attribute to its smallest value (256) turns
on the RTS/CTS handshake. Enter a value between 256 and 2346.
This field is not available when Super Mode is selected.
Fragmentation
Threshold
The threshold (number of bytes) for the fragmentation boundary for directed
messages. It is the maximum data fragment size that can be sent. Enter an even
number between 256 and 2346.
This field is not available when Super Mode is selected.
Output Power Set the output power of the ZyXEL Device in this field. If there is a high density of
APs in an area, decrease the output power of the ZyXEL Device to reduce
interference with other APs. Select one of the following 100%, 50%, 25%, 12.5% or
Minimum. See the product specifications for more information on your ZyXEL
Device’s output power.
This field is not available when you select 802.11a in the 802.11 Mode field.