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git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@2721 0192ed92-7a03-0410-a25b-9323aeb14dbd
48 lines
1.6 KiB
Groff
48 lines
1.6 KiB
Groff
.TH "ATHCTRL" "8" "February 2006" "" ""
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.SH "NAME"
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\fBathctrl\fP \- sets the maximum distance between communicating stations
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.SH "SYNOPSIS"
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.B athctrl
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[-h] [-i device] [-d distance]
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.SH "DESCRIPTION"
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\fBathctrl\fP sets the maximum distance in meters of stations with which
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communication occurs. This distance metric determines how much time the radio
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waits for an acknowledgment after every transmission and it sets a few other
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derived timing parameters. This limits the distance between two stations at
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which the collision avoidance, acknowledgment, retransmission protocols will
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work correctly.
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.PP
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In particular, when transmitting to too distant stations the radio will start
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retransmitting packets before an ACK can possibly have been received causing
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unnecessary retransmissions and collisions. The distance parameter needs to be
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set properly on all stations that perform long-distance communication
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irrespective of their mode of operation (master/managed/ad-hoc). For best
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operation all stations communicating with each other should be set to the same
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value.
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.PP
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.SH "OPTIONS"
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.TP
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.B \-i device
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The madwifi device to apply the settings to. If no device is specified,
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\fBathctrl\fP defaults to wifi0.
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.TP
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.B \-d distance
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Distance in metric meters.
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.TP
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.B \-h
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Display usage.
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.PP
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.SH "EXAMPLES"
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.TP
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.B athctrl \-i wifi1 \-d 500
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Set maximum distance of 500m for wifi1.
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.TP
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.B athctrl 1000
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Set maximum distance of 1000m for wifi0.
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.PP
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.SH "SEE ALSO"
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\fBathchans\fP(8), \fBathkey\fP(8), \fBathstats\fP(8)
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.SH "AUTHOR"
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This manual page was written by Kel Modderman <kelrin@tpg.com.au> and was based
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upon previous text written by Eric S. Raymond and Thorsten von Eicken.
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