The
utility is part of the isdn4bsd package and is used to control the level of
debugging output of the isdn4bsd kernel part.
Every layer of the isdn4bsd kernel uses a debugging mask which can be
manipulated using this utility.
A second usage of
is to display and reset chipset specific statistics and/or error counters
and to display and reset the D-channel layer 2
(Q.921 LAPD protocol) statistics and error counters.
The following options are available:
-c
Display chipset specific statistics and/or error counters.
-e
Set debugging mask for the selected layer(s) to display errors only.
-g
Get the debugging mask for the selected layer(s).
-l
Specify the layer for which a command applies.
Default is all layers.
-m
Set debugging mask for the selected layer(s) to display all possible
debugging messages (maximum output).
-q
Display the Q.921 (D-channel layer 2) frame receive/transmit statistics.
-r
Set debugging mask for the selected layer(s) to the compiled in default
(reset).
-s
Set debugging mask for the selected layer(s) to value.
Value can be
specified in any number base supported by
sscanf(3).
-u
Set the unit numbers for the -c, -q, -C and -Q flags.
-z
Set debugging mask for the selected layer(s) to no output at all (zero).
-H
Reset the chipset specific statistics and/or error counters to zero.
-Q
Reset the Q.921 (D-channel layer 2) frame receive/transmit statistics to zero.
FILES
/dev/i4bctl
EXAMPLES
The command:
isdndebug -g
displays the current debugging level for all ISDN layers
AUTHORS
The
utility and this manpage were written by
An Hellmuth Michaelis Aq hm@kts.org .
