ISDNDEBUG(8) BSD System Manager's Manual ISDNDEBUG(8)NAME
isdndebug — display and control isdn4bsd kernel variables and statistics
SYNOPSIS
isdndebug [-c] [-e] [-g] [-l layer] [-m] [-q] [-r] [-s value] [-u unit]
[-z] [-C] [-Q]
DESCRIPTION
The isdndebug utility is part of the isdn4bsd package and is used to con‐
trol the level of debugging output of the isdn4bsd kernel part. Every
layer of the isdn4bsd kernel uses a debugging mask which can be manipu‐
lated using this utility.
A second usage of isdndebug is to display and reset chipset specific sta‐
tistics and/or error counters and 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 pos‐
sible debugging messages (maximum output).
-q Display the Q.921 (D-channel layer 2) frame receive/transmit sta‐
tistics.
-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 sta‐
tistics to zero.
FILES
/dev/i4bctl
EXAMPLES
The command:
isdndebug -g
displays the current debugging level for all ISDN layers
AUTHORS
The isdndebug utility and this manpage were written by Hellmuth Michaelis
⟨hm@kts.org⟩.
BSD May 31, 2000 BSD