TCP/IP Information
Copyright © 1997 by International Business Machines Corporation

IBM DHCP Server Configuration Program Help


Tasks

Use the DHCP Server Configuration program to configure a DHCP server to provide IP address leases and other configuration options to various groups of clients, and to provide optional DDNS support for those clients.

Note:

When you start the DHCP Server Configuration program, you will be prompted for a password. If you have forgotten the password or want to change it, use the TCP/IP Administrator Password program.

Configuration tasks include:


Creating and Modifying Configuration Information

You can use the menu bar on the DHCP Server Configuration window to:

You can also use the DHCP Server Configuration program windows and notebooks to create or modify a configuration.


Viewing Configuration Information

Viewing information includes:

Expanding and Collapsing the Display

The configuration first appears in expanded format. To collapse parts of the display, click the minus (-) next to any item. For example, click minus next to any subnet to hide the classes and clients it contains. Click the plus (+) icon to show all contained items.

To expand or collapse the entire configuration, click the plus or minus icon by the DHCP server icon at the top of the Current Configuration pane.

Note:

You can also expand and collapse the configuration using View on the menu bar.

Locating Additional Information

To see the DHCP options defined for an item such as a subnet, class, or client, click the item in the configuration display. Selecting the item displays:

Using Subset Views

To view a subset of similar items in the configuration display, such as subnets, click Subnet View on the View pull-down. For example:

Click Option View for a view of all the options defined in the configuration. Click a specific option to see a cross-reference of all the items that specify the option, displayed in the Additional Information pane.

To return to a view of the entire configuration, click Main View on the View pull-down.

Viewing an Item in Context with the Configuration

To view an item in relation to the overall configuration, click the item in the subset view and click Main View on the View pull-down. The highlighted item appears in a display of the entire configuration. For example, click a client in a client view and click Main View on the View pull-down.

In a subset view, such as a client view, the Inherited From column displays the level at which the item is specified, such as a subnet.

Cross-Referencing Items That Use the Same Option

To locate all the items that have defined or inherited the same option:

  1. Click Option View on the View pull-down.

  2. Click an option, such as Log Server option 7, to display all the configuration items that define or inherit that option. For example, a class can specify a specific log server you also want to specify for other classes.

To change the value of an option for a specific item, such as a class item:

  1. Double-click the class item in the Additional Information pane to open a notebook.

  2. Click the DHCP Options tab in the notebook.

    1. In the available options list, click an option, such as 7, Log Server.

    2. Modify the IP address in the list of option values.

Viewing the Configuration File

For convenience, you can view the configuration file without closing the DHCP Server Configuration program and opening a line editor.

Definition statements occur in the configuration file in the same sequence as the items appear in the Current Configuration pane.

Configuration files are stored by default in the directory specified by the ETC environment variable. If you save a configuration file in another directory, it must be in the ETC directory before the DHCP server can use the file.

Use the View pull-down to see:


Adding Comments

Comments help organize your configuration for ease of use, reminding you of significant entries, organizational groups, server settings, and other important administrative information.

To add comments to the configuration, click Add Comment on the Configure pull-down. The comment appears in the configuration display and is also saved in the configuration file. You can also add comments for specific items within notebooks.


Viewing the Clipboard

Checking the contents of the clipboard can be helpful before you paste an entry into a configuration. To see results of your latest cut or copy operation in the clipboard, click Item on Clipboard on the View pull-down.


[ Top of Page | Previous Page | Next Page | Table of Contents ]