Copyright © 1997 by International Business Machines Corporation
IBM DHCP Server Configuration Program Help
Use this tab to build a list of DHCP options. You can
define:
- An option value for the configuration item associated with a notebook that
contains this tab. To define an option value, click on an option in the option
list. A data entry window appears to the right, including a brief description
of the option and its format requirements, which vary, depending on the
option's data type. For example, a time option has a different data type
than an option that accepts a list of IP addresses.
- A new option format for the configuration. An option format is a template
for the type of value to be entered for an option. For example, if the option
format is IP address, an IP address specified in dotted decimal notation, such
as 9.67.3.77, must be entered.
You cannot:
- Use an existing option number for a new option
- Edit an option already in use in the configuration
- Modify or delete an RFC-architected option
Note:
The DHCP Server Configuration program has one set of option definitions per
DHCP server. Therefore, if you reformat an option, the new format is applied
to any configuration file subsequently opened with the DHCP Server
Configuration program for the server.
Push buttons on this tab are:
- New
- Click New to define an option format.
- Edit
- Click Edit to modify an existing option.
- Delete
- Click Delete to remove an option from the list of available options.
- Remove from this item
- Click Remove From This Item to remove the option from the list of options
specified for this item.
Fields and other information include:
- Available Options
- Lists the formatted DHCP options (options with defined formats), including
the RFC-architected options and any options for which you have defined
formats. Sort the DHCP options by option number, alphabetically, or by
used/unused options. An unused option is an option that has never been
specified for any item in the configuration. To work on an option, click the
option.
For more information about options, see
DHCP Server Administration.
- Option Value
- After you select an option, the Option Value section on the notebook tab
displays the option number, its short title, at what level (scope) the option
is defined, and the value of the option. For example, the current value might
be an IP address or a value such as enabled/disabled. A value might already
exist at a global level for subnets, clients, and other DHCP items. This
display changes, depending on the type of option you click.
Note:
If an option cannot be configured or cannot be configured here, you see a
message. If the option cannot be configured here, it is configured elsewhere
in the notebook.
- Option Description
- This field displays the purpose of the option, as described in an RFC or
in a vendor-specific description.
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