Copyright (C) 1997, 1998 by International Business Machines Corporation
DHCP Server Configuration
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 bottom, 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 the online book 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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