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TRACE
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1995-07-04
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trace [<iface> [off | <btio> [outfile]]
Controls packet tracing by the interface drivers. Specific bits
enable tracing of the various interfaces and the amount of
information produced. Tracing is controlled on a per-interface basis;
without arguments, 'trace' gives a list of all defined interfaces and
their tracing status. Output can be limited to a single interface by
specifying it, and the control flags can be changed by specifying them
as well. Trace control flags may be followed by <outfile>, a path to
a disk file to contain the tracing output.
The flags are given as a hexadecimal number which is interpreted
as follows:
B - Broadcast filter flag. If set, only packets specifically
addressed to this node will be traced; broadcast packets will
not be displayed.
T - Controls type of tracing:
0 - Protocol headers are decoded, but data is not displayed
1 - Protocol headers are decoded, and data (but not the headers
themselves) are displayed as ASCII characters, 64 characters
per line. Unprintable characters are displayed as periods.
2 - Protocol headers are decoded, and the entire packet (headers
AND data) is also displayed in hexadecimal and ASCII, 16 chars
per line.
3 - A minimal display of headers and data is produced.
I - Enable tracing of input packets if 1, disable if 0
O - Enable tracing of output packets if 1, disable if 0
Example:
# Trace all packets on port1 and display with headers:
trace port1 0111
# Trace all lan non-broadcast received packets to a file:
trace lan 1210 d:\lan_ipt.trc