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Saving Configuration Changes
Abbreviating Commands
You only have to enter enough characters for the router to recognize the command as unique. This
example shows how to enter the show version command:
Router # sh v
Undoing Commands
If you want to disable a feature or undo a command you entered, you can enter the keyword no before
most commands; for example, no ip routing.
Command-Line Error Messages
Table A-3
router.
Table A-3
Error Message
% Ambiguous command:
"show con"
% Incomplete command.
% Invalid input detected at
'^' marker.
Saving Configuration Changes
You need to enter the copy running-config startup-config command to save your configuration changes
to nonvolatile RAM (NVRAM) so that they are not lost if there is a system reload or power outage. This
example shows how to use this command to save your changes:
Router# copy running-config startup-config
Destination filename [startup-config]?
Cisco Secure Router 520 Series Software Configuration Guide
A-6
lists some error messages that you might encounter while using the CLI to configure your
Common CLI Error Messages
Meaning
You did not enter enough
characters for your router to
recognize the command.
You did not enter all of the
keywords or values required by
this command.
You entered the command
incorrectly. The error occurred
where the caret mark (^) appears.
Appendix A
Cisco IOS Software Basic Skills
How to Get Help
Reenter the command, followed
by a question mark (?) with no
space between the command and
the question mark.
The possible keywords that you
can enter with the command are
displayed.
Reenter the command, followed
by a question mark (?) with no
space between the command and
the question mark.
The possible keywords that you
can enter with the command are
displayed.
Enter a question mark (?) to
display all of the commands that
are available in this particular
command mode.
OL-14210-01
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Troubleshooting
