- [Instructor] The Cisco Inner Operating System,
the IOS has three command line modes, User EXEC mode,
or user mode, Privileged EXEC mode, or privileged mode,
and then the Global Configuration mode.
The User EXEC mode, often referred to as just user mode,
is the first mode a user has access to
after logging in to the switch.
The user mode is identified by a greater than symbol
following the switch name.
This mode provides access to the basic commands,
including the show commands
as well as the system status commands.
The switch cannot be configured or restarted from this mode.
The next mode is the Privileged EXEC mode,
also referred to as just privileged mode,
and includes all the commands
that are available in the User EXEC mode.
Privileged mode supports configurations or restarts.
It also allows the user
to view the system configuration file,
restart the switch, and includes access
to all of the configuration commands
through which the switch will be configured.
It is identified by a pound symbol
followed by the switch name.
Additionally, you enter this mode
by typing the command enable at the greater than symbol.
Let me demonstrate this now.
I'm going to go ahead and the packet tracer allows you
to just click on the switch
to bring up the Command Line Interface.
You can see that I am at the user mode.
The name of the switch with a greater than symbol
to the right, I type the command enable.
This takes me to the privileged mode.
From the privileged mode I can type the command config,
or configure, from the terminal session.
I go ahead and hit Enter.
That brings me into the Global Configuration Mode.
From there I have access to all of the commands
for configuring setting up the switch.
If I want to exit out of this mode,
I can either type exit, end, or I can hit Control and Z.
I'm going to go ahead and type exit.
You see this takes me back to the privileged mode.
I can type exit one more time
and that takes me back to the user mode.