Endace DAG 5.2X, User Manual

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EDM01-33v1 DAG_7.5G4_Card_User_Guide
©2008 Endace Technology Ltd. Confidential - Version 1 - November 2008 35
-n NUM
Expected number of packets to receive. Returns an error if the actual number is
different.
-p
Set legacy format to PoS (default: ATM).
-P PARAMS
DAG 3.5S capture parameters.
-q
Quiet. This instructs
dagbits
to suppress summary information when
terminating. Error messages are not affected by this option.
-r NUM
Set legacy format record lengths to NUM.
-R NUM
When used in conjunction with the rlen test, indicates the RLEN of ERF records
to match against. NUM.
-s
Check for strictly monotonic (increasing) timestamps, rather than monotonic
(non-decreasing). Affects the behavior of the mono test. With strict checking it
is an error for consecutive timestamps to be equal; they must always increase.
-S NUM
Terminate
dagbits
after NUM seconds of capture. This option only makes
sense when capturing packets from a DAG card (i.e. when used in conjunction
with the -d flag).
-t NUM
Terminate
dagbits
if any ERF record type does not match NUM.
-U NUM
Process at most NUM records in one pass. This option enables the user to
reduce the performance of
dagbits
for various purposes. See also -D.
-v
-vv
--verbose
Increase verbosity of
dagbits
. This option increase the amount of data
displayed when printing an ERF record due to the print test or errors in other
tests. -v will print payload contents, -vv will print payload contents and an
accompanying ASCII dump of the packet payload.
-V, --version
Display version information.
-w
Instruct dagbits to treat all warnings as errors.
-W NUM
When used in conjunction with the wlen test, the wire length of ERF records
must be exactly NUM bytes.
-z
Stop when no traffic is received for one second.
dagbits
takes several options that serve as parameters to particular tests. Available tests
include monotonic time-stamp increment and frame checksum (FCS, aka CRC) validation.
See the
dagbits
help for further details.