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User top commands:
Router> ?
enable Turn on privileged mode command
exit Exit current mode and down to previous mode
help Description of the interactive help system
ping Send echo messages
quit Exit current mode and down to previous mode
show Show running system information
tracert Trace route to destination
cls Clear screen
Router>
You may also enter a question mark after a letter or string of letters to view all the commands that start with
that letter (with no space between the letter and the question mark). See section 3.8.2.
3.2 Privileged Top (Privileged EXEC) Mode
Because many of the privileged commands set the system configuration parameters, privileged access can
be password protected to prevent unauthorized use. The privileged command set includes those commands
contained in user EXEC mode, as well as the configure command through which you can access the
remaining command modes. Privileged EXEC mode also includes high-level testing commands, such as
debug.
The following example shows how to access privileged EXEC mode. Note that the prompt changes from
Router> to Router#:
Router> enable
Password:
Router#
Command Purpose
Router> enable [password]
Enters the privileged EXEC mode.
Router# ?
Lists privileged EXEC commands.
If the user has set a password, the system prompts for it before allowing access to privileged EXEC mode. If
an enable password has not been set, the enable mode can be accessed only through the console. The
user can enter the
enable password
global configuration command to set the password that restricts
access to privileged mode.
To return to user EXEC mode, use the following command:
Command Purpose
Router# disable
Returns you to user EXEC mode from privileged
EXEC mode.
In general, the top (privileged) commands allow you to change terminal settings on a temporary basis,
perform basic tests, and list system information. To list the commands available in top mode, enter a
question mark (?) at the prompt, as shown in the following example. Enter a question mark (?) after a
command to see all the options for that command.