SYNOPSIS

       atmdump [-i] [ -t type [-g gfc] [-c] ] [itf.]vpi.vci


DESCRIPTION

       atmdump  captures  or generates single ATM cells ("AAL0").
       When capturing cells, a time stamp, the cell  header  con­
       tents,  and a hex dump of the cell payload are shown. When
       sending cells, the payload type, the generic flow  control
       (GFC), and the cell loss priority (CLP) can be set.

       In both modes of operation, the interface number, the VPI,
       and the VCI have to be specified.

       When sending, atmdump expects the cell payload on standard
       input.   If  only  less  than  48  bytes  can be read, the
       remaining space is padded with zero bytes.


OPTIONS

       -i     displays timestamps as the interval since the  last
              cell  reception.  By  default, the absolute time is
              displayed. This  options  is  ignored  in  transmit
              mode.

       -t type
              selects  transmit  mode  and  specifies the payload
              type. A list of valid payload type numbers  can  be
              obtained by invoking atmdump without any arguments.

       -g gfc specifies the value of the GFC field. gfc has to be
              in the range from 0 to 15, default is zero.

       -c     sets  the  cell  loss priority flag, indicating low
              priority. By default, CLP is not set.


RESTRICTIONS

       Some device drivers may not pass OAM cells  transparently.


AUTHOR

       Werner Almesberger, EPFL ICA <Werner.Almesberger@epfl.ch>


SEE ALSO

       atmdiag(8), clip(8), sonetdiag(8)



Linux                     April 26, 2000               ATMDUMP(8)

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