User manual

96
Basic Rate Setting basic transmit rate.
Fragmentation
Threshold
A threshold, specified in bytes, that determines whether packets
will be fra
g
mented and at what size. On an 802.11 WLAN, packets
that exceed the fra
g
mentation threshold are fra
g
mented, i.e., split
into, smaller units suitable for the circuit size. Packets smaller
than the specified fragmentation threshold value are not
fragmented.
Enter a value between 256 and 2346.
If you experience a high packet error rate, try to slightly increase
your Fragmentation Threshold. The value should remain at its
default settin
g
of 2346. Settin
g
the Fra
g
mentation Threshold too
low may result in poor performance.
RTS Threshold Request to Send, when set in bytes, specifies the packet size
beyond which the WLAN Card invokes its RTS/CTS mechanism.
Packets that exceed the specified RTS threshold trigger the
RTS/CTS mechanism. The NIC transmits smaller packet without
using RTS/CTS. The default setting of 2347 (maximum length)
disables RTS Threshold.
DTIM Interval Delivery Traffic Indication Messa
g
e (DTIM), also known as Beacon
Rate. The entry ran
g
e is a value between 1 and 65535. A DTIM is
a countdown informing clients of the next window for listening to
broadcast and multicast messages. When the AP has buffered
broadcast or multicast messa
g
es for associated clients, it sends the
next DTIM with a DTIM Interval value. AP Clients hear the
beacons and awaken to receive the broadcast and multicast
messages. The default is 1.
Beacon Interval The amount of time between beacon transmissions. Each beacon
transmission identifies the presence of an access point. By
default, radio NICs passively scan all RF channels and listen for
beacons coming from access points to find a suitable access point.
Before a station enters power save mode, the station needs the
beacon interval to know when to wake up to receive the beacon
(and learn whether there are buffered frames at the access point).
The entered value is represented in ms. Default is 100.
Acceptable entry range is 1 to 0xffff (65535)