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RTS Threshold RTS/CTS (Request to Send/Clear to Send) is used to improve the data
transmission efficiency of the network with hidden nodes, especially when
there are lots of large packets to be transmitted.
When the size of a data packet is larger than the RTS Threshold, the RTS/
CTS mechanism will be activated. With this mechanism activated, before
sending a data packet, the client will send an RTS packet to the EAP to
request data transmitting. And then the EAP will send CTS packet to inform
other clients to delay their data transmitting. In this way, packet collisions
can be avoided.
For a busy network with hidden nodes, a low threshold value will help
reduce interference and packet collisions. But for a not-so-busy network, a
too low threshold value will cause bandwidth wasting and reduce the data
throughput. The recommended and default value is 2347 bytes.
Fragmentation
Threshold
The fragmentation function can limit the size of packets transmitted over
the network. If the size of a packet exceeds the Fragmentation Threshold,
the fragmentation function is activated and the packet will be fragmented
into several packets.
Fragmentation helps improve network performance if properly configured.
However, a too low fragmentation threshold may result in poor wireless
performance caused by the extra work of dividing up and reassembling
of frames and increased message traffic. The recommended and default
value is 2346 bytes.
Airtime Fairness Only EAP320 and EAP330 support this feature.
With this option enabled, each client connected to the EAP can get the
same amount of time to transmit data, avoiding low-data-rate clients to
occupy too much network bandwidth.
Compared with the relatively new client devices, some legacy client
devices support slower wireless rate. If they communicate with the
same EAP, the slower clients take more time to transmit and receive
data compared with the faster clients. As a result, the overall wireless
throughput of the network decreases. So under such circumstance, we
recommend that you enable this feature to ensure the data transmission
time for the faster clients. In this way, the network overall throughput can
be improved.
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