Manual Page - athctrl(8)
Manual Reference Pages - ATHCTRL (8)
NAME
athctrl - sets the maximum distance between communicating stations
CONTENTS
SYNOPSIS
athctrl [-h] [-i device] [-d distance]
DESCRIPTION
athctrl sets the maximum distance in meters of stations with which
communication occurs. This distance metric determines how much time the radio
waits for an acknowledgment after every transmission and it sets a few other
derived timing parameters. This limits the distance between two stations at
which the collision avoidance, acknowledgment, retransmission protocols will
work correctly.
In particular, when transmitting to too distant stations the radio will start
retransmitting packets before an ACK can possibly have been received causing
unnecessary retransmissions and collisions. The distance parameter needs to be
set properly on all stations that perform long-distance communication
irrespective of their mode of operation (master/managed/ad-hoc). For best
operation all stations communicating with each other should be set to the same
value.
OPTIONS
|
-i device |
| |
The madwifi device to apply the settings to. If no device is specified,
athctrl defaults to wifi0.
|
|
-d distance |
| |
Distance in metric meters.
|
|
-h |
Display usage.
|
|
EXAMPLES
|
athctrl -i wifi1 -d 500 |
| |
Set maximum distance of 500m for wifi1.
|
|
athctrl 1000 |
| |
Set maximum distance of 1000m for wifi0.
|
|
SEE ALSO
athchans(8), athkey(8), athstats(8)
AUTHOR
This manual page was written by Kel Modderman <kelrin@tpg.com.au> and was based
upon previous text written by Eric S. Raymond and Thorsten von Eicken.
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| ATHCTRL (8) | February 2006 |
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