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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)
-