ZyXEL Communications NBG410W3G - Manual (Page 152)

Chapter 8 Wi-Fi
NBG410W3G Series User’s Guide
152
The following table describes the labels in this screen.
Table 29 WIRELESS > Wi-Fi > Wireless Card
LABEL DESCRIPTION
Enable
Wireless Card
The wireless LAN through a wireless LAN card is turned off by default. Before you
enable the wireless LAN you should configure security by setting MAC filters and/or
802.1x security; otherwise your wireless LAN will be vulnerable upon enabling it.
Select the check box to enable the wireless LAN.
Bridge to Select LAN to use the wireless card as part of the LAN.
Select DMZ to use the wireless card as part of the DMZ.
The ZyXEL Device restarts after you change the wireless card setting.
Note: If you set the wireless card to be part of the LAN or DMZ, you
can still use wireless access. The firewall will treat the wireless
card as part of the LAN or DMZ respectively.
802.11 Mode Select 802.11b Only to allow only IEEE 802.11b compliant wireless devices to
associate with the ZyXEL Device.
Select 802.11g Only to allow only IEEE 802.11g compliant wireless devices to
associate with the ZyXEL Device.
Select 802.11b+g to allow both IEEE802.11b and IEEE802.11g compliant wireless
devices to associate with the ZyXEL Device. The transmission rate of your ZyXEL
Device might be reduced.
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.
To have the ZyXEL Device automatically select a channel, click Scan instead.
Scan Click this button to have the ZyXEL Device automatically select the wireless channel
with the lowest interference.
RTS/CTS
Threshold
In a wireless network which covers a large area, wireless devices are sometimes not
aware of each other’s presence. This may cause them to send information to the AP
at the same time and result in information colliding and not getting through.
RTS/CTS is designed to prevent collisions due to hidden nodes. You should only
configure RTS/CTS if the possibility of hidden nodes exists on your network and the
"cost" of resending large frames is more than the extra network overhead involved in
the RTS (Request To Send)/CTS (Clear to Send) handshake.
Enter a value between 256 and 2346. Data with a frame size larger than this value will
perform the RTS (Request To Send)/CTS (Clear to Send) handshake. The lower the
value, the more often the devices must get permission.
If the RTS/CTS value is greater than the Fragmentation value, then the RTS/CTS
handshake will never occur as data frames will be fragmented before they reach RTS/
CTS size.
Fragmentation
Threshold
This is the threshold (number of bytes) for the fragmentation boundary for directed
messages. It is the maximum data fragment size that can be sent. Enter a value
between 256 and 2346.
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 to reduce interference with other APs. Select
one of the following 100% (full power), 50%, 25%, 12.5% or min (minimum). See the
product specifications for more information on your ZyXEL Device’s output power.
Enable
Roaming
Roaming allows wireless stations to switch from one access point to another as they
move from one coverage area to another. Select this checkbox to enable roaming on
the ZyXEL Device if you have two or more ZyXEL Devices on the same subnet.
Note: All APs on the same subnet and the wireless clients must have
the same SSID to allow roaming.