ZyXEL Communications NWA3550 - Manual (Page 100)

Chapter 7 Wireless Configuration
NWA3550 User’s Guide
100
Disable channel
switching for
DFS
This field displays only when you select 802.11a in the 802.11 Mde field. Select this
if you do not want to use DFS (Dynamic Frequency Selection) .
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.
Beacon Interval When a wirelessly networked 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 low-
power mode before waking up to handle the beacon. This value can be set from
20ms to 1000ms. A high value helps save current consumption of the access point.
DTIM 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. This value can be set from 1 to 100.
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.
Table 22 Wireless: Access Point
LABEL DESCRIPTION