TRENDnet TEW-672GR - Wireless Router User Manual page 34

Wireless: Advanced
Beacon Interval
Beacons are packets sent by a wireless router to synchronize wireless devices. Specify a Beacon Period
value between 20 and 1000. The default value is set to 100 milliseconds.
DTIM
A DTIM is a countdown informing clients of the next window for listening to broadcast and multicast
messages. When the wireless router has buffered broadcast or multicast messages for associated clients,
it sends the next DTIM with a DTIM Interval value. Wireless clients detect the beacons and awaken to
receive the broadcast and multicast messages. The default value is 1. Valid settings are between 1 and
255.
Fragmentation Threshold
Wireless frames can be divided into smaller units (fragments) to improve performance in the presence of
RF interference and at the limits of RF coverage. Fragmentation will occur when frame size in bytes is
greater than the Fragmentation Threshold. This setting should remain at its default value of 2346 bytes.
Setting the Fragmentation value too low may result in poor performance.
RTS Threshold
When an excessive number of wireless packet collisions are occurring, wireless performance can be
improved by using the RTS/CTS (Request to Send/Clear to Send) handshake protocol. The wireless
transmitter will begin to send RTS frames (and wait for CTS) when data frame size in bytes is greater
than the RTS Threshold. This setting should remain at its default value of 2346 bytes.
Short Preamble and Slot
Using a short (400ns) guard interval can increase throughput. However, it can also increase error rate in
some installations, due to increased sensitivity to radio-frequency reflections. Select the option that
works best for your installation.
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