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Wireless Interface Commands
BreezeMAX Wi² and BreezeACCESS Wi² System Manual 223
Syntax
fragmentation-length <length>
length - Minimum packet size for which fragmentation is allowed. (Range: 256-2346 bytes)
Default Setting
2346
Command Mode
Interface Configuration (Wireless)
Command Usage
• If the packet size is smaller than the preset Fragment size, the packet will not be segmented.
• Fragmentation of the PDUs (Package Data Unit) can increase the reliability of transmissions
because it increases the probability of a successful transmission due to smaller frame size. If
there is significant interference present, or collisions due to high network utilization, try setting the
fragment size to send smaller fragments. This will speed up the retransmission of smaller frames.
However, it is more efficient to set the fragment size larger if very little or no interference is present
because it requires overhead to send multiple frames.
Example
5.18.15 rts-threshold
This command sets the packet size threshold at which a Request to Send (RTS)
signal must be sent to the receiving station prior to the sending station starting
communications.
Syntax
rts-threshold <threshold>
threshold - Threshold packet size for which to send an RTS. (Range: 0-2347 bytes)
Default Setting
2347
Command Mode
Interface Configuration (Wireless)
Command Usage
• If the threshold is set to 0, the AP always sends RTS signals. If set to 2347, the AP never sends
RTS signals. If set to any other value, and the packet size equals or exceeds the RTS threshold,
the RTS/CTS (Request to Send / Clear to Send) mechanism will be enabled.
• The AP sends RTS frames to a receiving station to negotiate the sending of a data frame. After
receiving an RTS frame, the station sends a CTS frame to notify the sending station that it can
start sending data.
• APs contending for the wireless medium may not be aware of each other. The RTS/CTS
mechanism can solve this “Hidden Node” problem.
Enterprise AP(if-wireless g)#fragmentation-length 512
Enterprise AP(if-wireless g)#