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 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 isdndebug 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 dis

play errors

only.

-g Get the debugging mask for the selected layer(s).

-l Specify the layer for which a command applies. De

fault is all

layers.

-m Set debugging mask for the selected layer(s) to dis

play all pos

sible debugging messages (maximum output).

-q Display the Q.921 (D-channel layer 2) frame re

ceive/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 val

ue. Value can

be specified in any number base supported by ss

canf(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 re

ceive/transmit

statistics 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 Hell

muth Michaelis
<hm@kts.org>.

BSD May 31, 2000

BSD