Command Configuration Modes
User EXEC Mode
User EXEC mode is the default mode for the
device; it supports the lowest level of user permissions. In this mode, you can
execute basic commands such as ping and traceroute, but only a
subset of clear, show, and debug commands can be entered in
this mode. The following example shows the user EXEC prompt after login. The
enable command
enters privileged EXEC mode.
device> enable device#
Privileged EXEC Mode
Privileged EXEC mode supports all clear,
show, and debug commands. In addition, you can enter some
configuration commands that do not make changes to the system configuration. The
following example shows the privileged EXEC prompt. At this prompt, you use the
configure
terminal command to enter global configuration mode.
device# configure terminal device(config)#
Global Configuration Mode
Global configuration mode supports commands that
can change the device configuration. For any changes to be persistent, you must
save
the system configuration before rebooting the device. The global configuration
mode
provides access to sub-configuration modes for individual interfaces, VLANs, routing
protocols, and other configuration areas. The following example shows how you
access
the interface sub-configuration mode by using the interface command with
a specified interface.
device(config)# interface ethernet 1/1/1 device(config-if-e1000-1/1/1)#