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during which all the other stations hold off the transmission and wait until the requesting
station will finish transmission.
Fragmentation Threshold:
specifies the maximum size for a packet before data is
fragmented into multiple packets. The range is 256-2346 bytes, or word “off”. Setting the
Fragmentation Threshold too low may result in poor network performance.
The use of fragmentation can increase the reliability of frame transmissions. Because of
sending smaller frames, collisions are much less likely to occur. However lower values of
the Fragmentation Threshold will result lower throughput as well. Minor or no
modifications of the Fragmentation Threshold value is recommended while default setting
of 2346 is optimum in most of the wireless network use cases.
Station Isolation:
This option allows packets only to be sent from the external network to
the CPE and vice verse (applicable for AP/AP WDS mode only). If the Client Isolation is
enabled wireless stations connected to the same AP will not be able to interconnect on
both layer 2 (MAC) and layer 3 (IP) level. This is effective for the associated stations and
WDS peers also.
Acknowledgement Timeout
Device has an auto-acknowledgement timeout algorithm which dynamically optimizes the
frame acknowledgement timeout value without user intervention. This is a critical feature
required for stabilizing long-distance outdoor links. The user also has the ability to enter
the value manually.
Distance:
specify the distance value in miles (or kilometers) using slider or enter the value
manually. The signal strength and throughput falls off with range. Changing the distance
value will change the ACK Timeout to the appropriate value of the distance.
ACK Timeout:
specify the ACK Timeout. Every time the station receives the data frame it
sends an ACK frame to the AP (if transmission errors are absent). If the station receives
no ACK frame from the AP within set timeout it re-sends the frame. The performance
drops because of the too many data frames are re-send, thus if the timeout is set too short
or too long, it will result poor connection and throughput performance.
Changing the ACK Timeout''== value will change the Distance to the appropriate distance
value for the ACK Timeout.
Auto:
Adjust control and enable the ACK Timeout Self-Configuration feature. If enabled,
ACK Timeout value will be derived dynamically using an algorithm similar to the
Conservative Rate Algorithm described above. It is not recommended to use Auto Adjust
option for long range links if the signal level is low or the high level of interference is
present.
If two or more stations are located at the considerably different distance from the Access
Point, the highest ACK Timeout for the farthest station should be set at the AP side. It is
not recommended to use Auto Adjust option for Point-to-Multipoint connections as it will
not warrant highest network performance in all the use cases.
