6
Figure 3
The relationship between the protocol and screen output switch
Configuring system debugging
Administrators usually use the
debugging
commands to diagnose network failure. However, output of the
debugging information may reduce system efficiency. Therefore, when debugging is completed, disable
the debugging function that was used, or use the
undo debugging all
command to disable all the
debugging functions.
Output of debugging information depends on the configurations of the information center and the
debugging commands of each protocol and functional module. Debugging information is commonly
output to a terminal (including console or VTY) for display. You can also output debugging information
to other destinations. For more information, see
Network Management and Monitoring Command
Reference
. By default, you can output debugging information to a terminal by following these steps:
To do…
Use the command…
Remarks
Enable the terminal
monitoring of system
information
terminal monitor
Optional
The terminal monitoring on the console is
enabled by default and the terminal
monitoring on the monitoring terminal is
disabled by default.
Available in user view
Enable the terminal display of
debugging information
terminal debugging
Required
Disabled by default
Available in user view
Enable debugging for a
specified module
debugging
{
all
[
timeout
time
] |
module-name
[
option
] }
Required
Disabled by default
Available in user view