Exec Modes

There are two Exec modes: User Exec and Privileged Exec.

After you log in to the system, the CLI is in User Exec mode. By default, the commands you can execute from User Exec mode provide only user-level access; however, you should password protect it to prevent unauthorized use. The User Exec commands allow you to perform such functions as:

• Change terminal settings on a temporary basis.
• Perform ping and trace commands.
• Display system information.

  host1>?
    clear       Clear system information
    default     Set a command to its default(s)
    dir         Display a list of local files
    disable     Reduce the command privilege level
    enable      Enable access to privileged commands
    erase       Erase configuration settings
    exit        Exit from the current command mode
    flash-disk  Perform flash disk operations
    help        Describe the interactive help system
    ip          Configure IP attributes on an interface
    ipv6        Configure IPv6 attributes
    l2tp        L2TP operations
    macro       Run a CLI macro
    mpls        Execute MPLS commands
    mtrace      Trace the path that packets will traverse from source to
                destination for a given group
    no          Negate a command or set its default(s)
    ping        Send echo request to remote host
    show        Display system information
    sleep       Make the Command Interface pause for a specified duration
    terminal    Configure the terminal line settings
    test        Test the outcome of a command
    traceroute  Trace the path that packets traverse to their destination

Privileged Exec mode provides privileged-level access and therefore should also be password protected to prevent unauthorized use. Privileged Exec commands allow you to perform such functions as:

• Display system information.
• Set operating parameters.
• Gain access to Global Configuration mode.

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