High-Power Ceiling Mount Wireless 300N PoE Access Point
24
Force 40MHz mode
When you activate the 40 MHz HT mode, this option appears.
If this option is deactivated, you run the Intellinet access point in the proper
20/40 MHz coexist model.
When activated, the access point will always use 40MHz channels even if the
secondary channel overlaps with other wireless networks. Using this option
does not comply with IEEE 802.11n‐2009, and since using 40 MHz can actually
be detrimental to the performance in busy network environments, activating
this open is rarely a good idea.
Distance Optimization
This parameter controls the sensitivity range. When a packet is sent out from
the access point, it waits for an acknowledgement frame from the other end.
The access point will wait for a response until a certain amount of time has
elapsed, called the "ACK timeout". When you enter the maximum distance to
the furthest member of the wireless network, you optimize the ACK timeout
for your network. Enter the value in meters. If you are used to using “feet”,
simply divide the approx. distance by three.
Keep in mind that the higher the ACK timing, the lower the throughput will
be. If the value is set too high, packets could be lost as the access point waits
for the ACK window to timeout. On the other hand, if the ACK value is set too
low, the window could expire too soon and returning packets could be
dropped, also lowering throughput.
Fragmentation
Threshold
The fragmentation threshold is used to set the maximum packets size that a
client will send. The smaller the maximum sizes the better the reliability of
the wireless connection, but the performance is likely to decrease. Possible
values range from 256 to the default value of 2346 (bytes).
So when should you change this value? Only if you need to improve the
reliability of a wireless connection where performance is secondary. Usually
you do more harm than good if you lower the fragment threshold.
RTS/CTS Threshold
RTS/CTS (request to send / clear to send) packets are sent by wireless clients
to access points. The clients essentially ask for permission to send the next
data packet. The lower the threshold, the more stable your wireless network,
since it essentially asks more often when sending packages. The default value
is 2347, and you are well advised to leave this value unchanged.
