1ATMLOOP(8)                   Maintenance Commands                   ATMLOOP(8)
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NAME

6       atmloop - get/set loopback mode of ATM interfaces
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SYNOPSIS

9       atmloop -s [-l level] [-r level] [itf]
10       atmloop [itf]
11       atmloop -q [itf]
12       atmloop -V
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DESCRIPTION

15       atmloop  sets  or  shows the current loopback settings of an ATM inter‐
16       face, and allows to query the loopback modes supported  by  the  inter‐
17       face.
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19       Some ATM cards can be configured to echo data back to the driver (local
20       loopback) or to the network (remote loopback). The echoing may be  done
21       at several different levels:
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23       aal    AAL PDUs
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25       atm    ATM cells
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27       digital
28              bits sent to or received from the line interface
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30       analog the analog signal
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32       The levels supported by an interface can be queried with the -q option.
33       If invoked without options, atmloop displays the current loopback  set‐
34       tings.
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OPTIONS

37       -s     set  loopback mode. Followed by either -l or -r, both options to
38              set local and remote loopback at the same time (if supported  by
39              the driver), or none of them to turn off any loopback.
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41       -l level
42              enable local loopback.
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44       -r level
45              enable remote loopback.
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47       -q level
48              query loopback levels supported by the interface.
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50       -V     print version number of atmloop on standard output and exit.
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AUTHOR

53       Werner Almesberger, EPFL ICA <Werner.Almesberger@epfl.ch>
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SEE ALSO

56       atmdiag(8), sonetdiag(8)
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60Linux                           April 26, 2000                      ATMLOOP(8)