Cisco Systems 2950 Abbreviating Commands, Using no and default Forms of Commands

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Catalyst2950 and Catalyst2955 Switch Software Configuration Guide
78-11380-10
Chapter2 Us ing the Command-Line Interface
Abbreviating Commands
Abbreviating Commands
You have to enter only enough characters for the switch to recognize the command as unique . Thi s
example shows how to enter the show configuration privileged EXEC command:
Switch# show conf
Using no and default Forms of Commands
Almost every configuration command als o has a no form. In genera l, use th e no form to disable a feature
or function or reverse the action of a command. For example, the no shutdown interface configur atio n
command reverses the shutdown of an interface. Use the command without the keyword no to re-enable
a disabled feature or to enable a feature that is disabled by default.
Configuration commands can also have a default form. The default form of a command returns the
command setting to its default. Most commands are disabled by default, so the default form is the same
as the no form. However, some commands are enabled by default and ha ve v ariables set to certain def ault
values. In these cases, the default command enables the command and sets variables to their default
values.
command ? List the associated keywords for a command.
For example:
Switch> show ?
command keyword ?List the associated arguments for a keyword.
For example:
Switch(config)# cdp holdtime ?
<10-255> Length of time (in sec) that receiver must keep this packet
Table2-2 Help Summary (continued)
Command Purpose