Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.01.03 or greater

5-23
Radio Port Configuration
Configuring Radio Settings
2. In the RTS Threshold field, enter the data frame size, in bytes, at which a
station must send an RTS frame.
The default threshold is 2346 bytes, which means that the RTS/CTS
exchange will never be used. (2346 is the maximum size for an 802.11
frame.)
3. Click OK.
Setting the Beacon Interval. A beacon is an 802.11 management frame
broadcast by an RP radio to advertise its presence as a network point of access
and to keep the network synchronized. Beacon frames include information
such as:
■ the service set identifier (SSID) for a WLAN
■ the RP radio's basic SSID (BSSID) (media access control [MAC] address)
■ the broadcast destination address
■ a time stamp for synchronization
■ indicators about traffic and delivery, such as DTIMs
To let stations sleep longer and preserve battery life, you can increase the time
between beacons. Decreasing the beacon interval, on the other hand, helps to
support streaming multicast audio and video applications that are jitter sen-
sitive.
Follow these directions to adjust the default beacon interval for radios in your
network:
1. Select Network Setup > Radio Adoption Defaults > Configuration, select
the radio type, and click Edit.
2. In the Advanced Properties section, enter a value in the Beacon Interval field.
This value determines the time that the radio allows between sending
beacons. You specify the beacon interval in units of 1000 ms. The default
setting is 100,000 ms.
3. Click OK.
Setting the DTIM Period. The DTIM is a known string of bits that can be
sent in a beacon frame. It notifies wireless stations using power save that the
RP has buffered broadcast or multicast frames that it will be sending soon.
DTIMs are simple data frames that do not require an acknowledgement, so
stations sometimes miss them. To overcome this, RPs are configured to send
periodic DTIMs out on beacons until the data is sent.