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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