Cisco IOS Commands

EXEC modes upported in the Cisco IOS are

User EXEC mode (user mode)
Privileged EXEC mode (enable or privileged mode)

User EXEC mode

User EXEC mode is the first mode you enter when you log into the IOS. This mode is limited and is mostly used to view statistics. You cannot change a router’s configuration in this mode. By default, the greater-than sign (>) indicates that you are in user mode.It is also a stepping-stone for logging into more privileged mode Router>

Privileged EXEC mode

In privileged EXEC mode, you can view and change the configuration in a router. To enter privileged mode, enter the enable command while in user mode. The pound symbol (#) indicates that you are in privileged mode. This mode is usually protected with a password. You also see the output of the prompt:

Router>

enablePassword:

Router#

How to go into privileged (enable) mode

If there is a password in user mode please enter it. The prompt will like Router>. Type now

enable or en

After a succesfull login the prompt will have changed to Router# To end Priviliged mode type:

disable