60 lines
1.5 KiB
Groff
60 lines
1.5 KiB
Groff
.TH ATMLOOP 8 "April 26, 2000" "Linux" "Maintenance Commands"
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.SH NAME
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atmloop \- get/set loopback mode of ATM interfaces
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.SH SYNOPSIS
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.ad l
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.B atmloop
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.B \-s
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.RB [ \-l\ \fIlevel\fP ]
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.RB [ \-r\ \fIlevel\fP ]
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.RB [ \fIitf\fP ]
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.br
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.B atmloop
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.RB [ \fIitf\fP ]
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.br
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.B atmloop
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.B \-q
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.RB [ \fIitf\fP ]
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.br
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.B atmloop
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.B \-V
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.ad b
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.SH DESCRIPTION
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.B atmloop
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sets or shows the current loopback settings of an ATM interface, and allows
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to query the loopback modes supported by the interface.
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.P
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Some ATM cards can be configured to echo data back to the driver (local
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loopback) or to the network (remote loopback). The echoing may be done at
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several different levels:
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.IP \fBaal\fP
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AAL PDUs
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.IP \fBatm\fP
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ATM cells
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.IP \fBdigital\fP
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bits sent to or received from the line interface
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.IP \fBanalog\fP
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the analog signal
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.P
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The levels supported by an interface can be queried with the \fB\-q\fP option.
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If invoked without options, \fBatmloop\fP displays the current loopback
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settings.
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.SH OPTIONS
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.IP \fB\-s\fP
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set loopback mode. Followed by either \fB\-l\fP or \fB\-r\fP, both
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options to set local and remote loopback at the same time (if supported by
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the driver), or none of them to turn off any loopback.
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.IP \fB\-l\ \fIlevel\fP
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enable local loopback.
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.IP \fB\-r\ \fIlevel\fP
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enable remote loopback.
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.IP \fB\-q\ \fIlevel\fP
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query loopback levels supported by the interface.
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.IP \fB\-V\fP
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print version number of \fBatmloop\fP on standard output and exit.
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.SH AUTHOR
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Werner Almesberger, EPFL ICA <Werner.Almesberger@epfl.ch>
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.SH "SEE ALSO"
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atmdiag(8), sonetdiag(8)
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.\"{{{}}}
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