Copyright (C) 1997, 1998 by International Business Machines Corporation
DHCP Server Configuration
The DHCP Server Configuration window enables you to add,
modify, delete, or view configuration information for your DHCP server.
The items in the configuration are displayed in two panes:
- A Current Configuration pane, in which configuration items are arranged in
a hierarchy that you can expand or collapse.
- A details pane, in which additional information is displayed, including
related options for some views and other information about an item highlighted
in the Current Configuration pane.
A banner at the bottom of the window provides a brief summary of
information for an item. The banner also displays status information
about major operations, such as loading or saving a file.
To open a notebook to view or modify an item in the current configuration,
double-click the item.
The menu bar has these choices:
Use the File pull-down menu to create or save a configuration file.
Note:
The DHCP Server Configuration program provides a default file type of
dhcpsd.cfg for all configuration files.
The file menu contains:
- New
- Start a new configuration file.
Note:
If you click New while you are currently editing an existing configuration
file, the DHCP Server Configuration program prompts you to save your current
work.
- Open
- Opens the Open window so you can open an existing
configuration file.
- Load Sample
- Load the sample configuration file, which contains an example of every
type of configurable object. You can use the sample as a starting point
for your own configuration.
- Save
- Save the current file, using the existing file name. The
configuration remains open, available for additional changes. If this
is a new file, the default file name is DHCPSD.CFG in the in the
directory specified by the ETC environment variable. If the
configuration file is not saved in the directory specified by the ETC
environment variable, it cannot be used by the DHCP server until it is moved
to the ETC directory.
- Save As...
- Opens the Save window so you can specify a
configuration file name.
- Exit
- Exit the DHCP server configuration program. You are prompted to
save unsaved changes.
Use the Edit pull-down menu to find configuration items and also to delete,
cut, copy, and paste configuration items. Items on the pull-down are
active or grayed, depending on the whether the action is available for the
item selected in the configuration.
The edit menu contains:
- Find
- Opens the Find window to enable you to specify a string
to find, for example, the IP address of a subnet.
- Cut
- Cut the selected configuration item to the clipboard, graying the item in
the current view. Subordinate items are included in the cut.
Pasting the cut item moves the item to the paste location.
Note:
If you cut an item and immediately cut or copy a second item without pasting
the first item, the clipboard content is not discarded; the DHCP Server
Configuration program returns the previously-cut item to an active state in
the view.
- Copy Item
- Copy the selected configuration item to the clipboard. Items
subordinate to the selected item are not copied.
- Copy Tree
- Copy to the clipboard the selected configuration item and all items
defined within its scope.
- Paste After
- If appropriate to the target destination, paste the clipboard content at
the same level, after the currently-selected item. The copied item
remains on the clipboard so you can paste it again.
- Paste Within
- If appropriate to the target destination, paste the clipboard content as a
subordinate item within the currently-selected item. For example, paste
a class within a subnet. The copied item remains on the clipboard so
you can paste it again.
- Delete
- Delete an item AND all other items defined within the scope of
the item.
Attention: A delete action cannot be undone.
Use the Configure pull-down menu to open a notebook to add or modify
configuration items. Items on the pull-down are active or grayed,
depending on the whether the action is available for the item selected in the
configuration. For example, because a class can be added only at a
global or subnet level, Add Class is active when a global or subnet item is
selected in the configuration.
Note:
Only one notebook can be open at any time.
The configure menu contains:
- Modify Selected Item
- Modify the currently-selected item. This is equivalent to
double-clicking the item. This menu item displays the appropriate
notebook for the selected configuration item.
- Add Subnet
- Add a subnet. Add Subnet is active if a global item is selected in
the configuration.
The Subnet item specifies configuration parameters for an address pool
administered by a server. An address pool is a range of IP addresses to
be leased to clients.
- Add Class
- Add a class.
The Class item specifies configuration parameters for a user-defined group
of clients that identify themselves as belonging to a named class administered
by a server. Classes can be specified at global and subnet
levels. For example, define a class called "fastprt" for clients that
require the use of a high-speed printer.
- Add Client
- Add a client. The DHCP server provides a specific address, lease,
and other configuration parameters, or DHCP configuration parameters only to a
specific client that identifies itself to the server with an identifier such
as a MAC address.
Clients can be specified at global or subnet levels.
- Add Vendor Options
- Add a vendor and vendor options. For more information on vendor
options, see the online book DHCP Server
Administration.
- Add Comment
- Add a comment.
- Add Subnet Group
- Define a group of subnets that share the same physical network.
Subnet groups can be defined only at a global level.
- Exclude Client
- Exclude a client uniquely identified by a MAC address from service by the
DHCP server. Clients can be excluded at global or subnet
levels.
Use the View pull-down menu to display the configuration in a
variety of ways, making it easier to navigate within large configurations to
find specific items. The View pull-down enables you to quickly move
between a complete view of the configuration and a subset view. For
example, you can filter the configuration to display views of only subnets,
subnet groups, classes, or clients.
The view menu contains:
- Main View
- Display all configuration items.
- Expand All
- Expand all branches of the main view.
- Collapse All
- Collapse all branches of the main view.
- Subnet View
- Display a list of subnets defined in the configuration.
- Class View
- Display a list of classes defined in the configuration.
- Client View
- Display a list of clients and excluded clients defined in the
configuration.
- Subnet Group View
- Display only the subnet groups and their subordinate subnets defined in
the configuration.
- Option View
- Display all options defined in the configuration. Click a specific
option to see a cross-reference of all the items that specify or inherit the
option, displayed in the details pane.
- View Entire File
- Display the entire (read-only) configuration file in text format.
This is the same text that would be stored in a configuration file if the file
were saved at this point in your work session.
- View File Item with Entire Scope
- For an item highlighted in the configuration, display the statement
defining the item in the configuration file and any items within its
scope.
- View File Item Alone
- For an item highlighted in the configuration, display only the statement
defining the item in the configuration file.
- Item on Clipboard
- Display the content of the clipboard
Use the Help pull-down menu to view help information for this
program.
The help menu contains:
- How Do I
- Describes basic tasks to use the program
- Window Help
- Provides help for the DHCP Server Configuration window
- Introduction
- Displays the help table of contents and introduction
- About
- Describes the product version and copyright
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