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NOSVIEW
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TRACE
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1991-09-18
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===== NOSview [137]
trace
=====
_________________________________________________________________
trace [<interface> [off | <BTIO_flags> [<tracefile>]]]
_________________________________________________________________
Controls packet tracing by the interface drivers.
The Broadcast/Type/Input/Output (BTIO) flag settings specify 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.
The BTIO settings are expressed as a hexadecimal number as
follows:
B=1: Broadcast filter flag enabled. Only packets specifically
addressed to this interface will be displayed. Broadcast
packets will be ignored.
B=0: Broadcast filter flag disabled.
T=2: Protocol headers are decoded, and the entire packet
(headers AND data) is also displayed in hexadecimal
and ASCII, 16 characters per line. Unprintable characters
are displayed as dots.
T=1: Protocol headers are decoded, and data (but not the
headers themselves) are displayed as ASCII characters,
64 characters/line.
T=0: Protocol headers are decoded, but data is not displayed.
I=1: Enable tracing of input packets.
I=0: Disable tracing of input packets.
O=1: Enable tracing of output packets.
O=0: Disable tracing of output packets.
By default, trace output is displayed on the screen.
If a <trace_filename> is given, trace output is saved in the
specified file. The trace file is closed by setting the BTIO
flags to 000.
>> Examples: trace tnc0 211 (full trace, on screen)
trace tnc0 211 tnc0.trc (save trace in 'tnc0.trc')
trace tnc0 0 (stop trace & close file)