CCNA Notes : cont...
36. Router modes of operation:
1.
User EXEC mode (Prompt: Router>):- This is the LOWEST level of
access. This allows examination of router status, see routing
tables, and do some diagnostics. However, you cannot change the
router configuration, view the configuration files, or control the
router in any way. The prompt in this mode is "Router>".
2.
Privileged (enable) EXEC mode (Prompt: Router#):- This mode allows
you to have all the privileges of EXEC (user) mode plus commands
that enable you to view configuration files, change the router
configuration, perform troubleshooting that could potentially
disrupt traffic. The default prompt for this mode is "Router#".When
you are working in the privileged mode (at # prompt), you can get
back to user mode by typing "disable" at the "#" prompt.
3.
Global Configuration mode (Prompt: Router (Config)#):-
Global
configuration mode allows you to perform tasks that affect the
entire router, such as naming the router, configuration of banner
messages, enabling routed protocols, and generally anything that
affects the operation of the entire router.
When you
first switch on a router, you enter Setup mode. Setup mode is
different from configuration mode in that setup mode appears when
there is no configuration file present. Upon entering setup mode,
you can supply some basic configuration parameters to Cisco router.
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