Filter
Top Products
1-4
Cisco VG224 Voice Gateway Software Configuration Guide
OL-5005-01
Chapter 1 Understanding Interface Numbering and Cisco IOS Software Basics
Understanding Cisco IOS Software Basics
Timesaver Each command mode restricts you to a subset of commands. If you are having trouble entering a
command, check the prompt, and enter the question mark (?) for a list of available commands. You might
be in the wrong command mode or using the wrong syntax.
In the following example, notice how the prompt changes after each command to indicate a new
command mode:
Router> enable
Password:
<enable password>
Router# configure terminal
Router(config)# interface serial 0/0
Router#
%SYS-5-CONFIG_I: Configured from console by console
The last message is normal and does not indicate an error. Press Return to get the Router# prompt.
Note You can press Ctrl-Z in any mode to immediately return to enable mode (Router#), instead of entering
exit, which returns you to the previous mode.
Undoing a Command or Feature
If you want to undo a command you entered or disable a feature, enter the keyword no before most
commands; for example, no ip routing.
Ta b l e 1-1 Common Command Modes
Command Mode Access Method
Router Prompt
Displayed
Exit Method
User EXEC Log in. Router> Use the logout
command.
Privileged EXEC From user EXEC mode,
enter the enable
command.
Router# To exit to user EXEC
mode, use the disable,
exit, or logout
command.
Global configuration From the privileged
EXEC mode, enter the
configure terminal
command.
Router (config)#
To exit to privileged
EXEC mode, use the
exit or end command,
or press Ctrl-Z.
Interface configuration From the global
configuration mode,
enter the interface type
number command, such
as interface
serial 0/0.
Router (config-if)#
To exit to global
configuration mode, use
the exit command.
To exit directly to
privileged EXEC mode,
press Ctrl-Z.