Command Line Interface
5211553-KDU 137 365 Uen D 2006-06-16
7.2.6 Negating the Effect of Commands
For many configuration commands the prefix keyword no can be entered to
cancel the effect of a command or reset the configuration to the default value.
For example, the logging command logs system messages to a host server.
To disable logging, specify the no logging command. This guide describes the
negation effect for all applicable commands.
7.2.7 Using Command History
The CLI maintains a history of commands that have been entered. The up arrow
key can be pressed to scroll back through the history of commands. Any
command displayed in the history list can be executed again, or first modified
and then executed.
Using the show history command displays a longer list of recently executed
commands.
7.2.8 Understanding Command Modes
The command set is divided into Exec and Configuration classes. Exec
commands generally display information on system status or clear statistical
counters. Configuration commands, on the other hand, modify interface
parameters or enable certain switching functions. These classes are further
divided into different modes. Available commands depend on the selected
mode. A question mark ? can always be entered at the prompt to display a list
of the commands available for the current mode. The command classes and
associated modes are displayed in Table 29:
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