No" Form Of A Command; Support For "No" Form; Behavior Of Command Help ("?") - NETGEAR ProSafe GSM7212 User Manual

User Manual for the NETGEAR 7200 Series Layer 2 Managed Switch Software
After all the mandatory parameters are entered, any additional parameters entered are treated as
optional parameters. If any of the parameters are not recognized a syntax error message will be
displayed.
After the command is successfully parsed and validated, the control of execution goes to the
2.
corresponding CLI callback function.
For mandatory parameters, the command tree extends till the mandatory parameters make the
3.
leaf of the branch. The callback function is only invoked when all the mandatory parameters
are provided. For optional parameters, the command tree extends till the mandatory
parameters and the optional parameters make the leaf of the branch. However, the call back
function is associated with the node where the mandatory parameters are fetched. The call
back function then takes care of the optional parameters.
Once the control has reached the callback function, the callback function has complete
4.
information about the parameters entered by the operator.

"No" Form of a Command

"No" is a specific form of an existing command and does not represent a new or distinct command.
Only the configuration commands are available in the "no" form. The behavior and the support
details of the "no" form is captured as part of the mapping sheets. The mapping sheets are
contained in the Appendix A, "IS CLI Mapping

Support for "No" Form

Almost every configuration command has a "no" form. In general, use the no form to reverse the
action of a command or reset a value back to the default. For example, the "no shutdown interface'
configuration 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.

Behavior of Command Help ("?")

The "no" form is treated as a specific form of an existing command and does not represent a new
or distinct command. This implies that the behavior of the "?" and help text is the same for the
"no" form:
• The help message is the same for all forms of the command. The help string may be
augmented with details about the "no" form behavior.
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section.
December 2004, 202-10010-02
Mode-based CLI