Copyright (C) 1997, 1998 by International Business Machines Corporation

# TCP/IP Configuration Notebook Online Help

### Configure Network Interface Parameters--Basic Options Page

Use this page to configure up to eight LAN adapter interfaces.

Before making your selections, you will need to know if you have access to a DHCP server, and if you are in a dynamically-updatable zone. One LAN adapter may be configured for DHCP.

The selections and fields on this page are:

Interface to Configure list box
  Select an interface from the list. Generally you will choose LAN interface 0 for your first LAN adapter.

  To enable TCP/IP on the selected LAN adapter, put a check mark in the Enable Interface check box for the LAN. Typically you want to enable your LAN0 adapter.

Configuration Options
  The selections and fields available are:

  Enable Interface
    Check this box to activate, or uncheck this box to deactivate, TCP/IP on this LAN adapter. The change will occur the next time the computer is restarted or when SETUP.CMD is run.

  Automatically, Using DHCP
    Select this radio button to configure your computer automatically for TCP/IP, using DHCP.

    Note: If on the Printing tab a remote print server or remote print server's printer is specified, these entries will override any values DHCP assigns. Consider removing these entries if you intend for DHCP to assign a server and printer automatically. Be advised, though, that if you remove the server and printer entries from the Printing tab, there will be no default print server and printer for any non-DHCP LAN interfaces defined on the Network tab.

    On the Routing tab, however, if a router for the DHCP LAN interface is specified, DHCP will override that value with its own routing information. Routes associated with any non-DHCP LAN interfaces will not be affected.

    Use previous DHCP Configuration on reboot
      Uncheck this box to have DHCP refresh the IP address and TCP/IP configuration information each time this computer is started. Check this box to use IP address and TCP/IP information retained by DHCP from a previous startup.

      The default is to refresh the information at each startup.

    Also Using DDNS
      Check this box if you are in a dynamically updatable zone. If the box is checked, a DDNS server will automatically update tables with your current host name.

Manually, Using
  Select this radio button to manually configure a LAN interface. If selected, the IP Address and Subnet Mask fields must be completed.

  IP Address
    Specify the Internet Protocol address, in 32-bit dotted-decimal notation. A dotted-decimal address consists of four 8-bit numeric fields, ranging from 0-255, separated by periods. For example, 9.67.43.126 is an IP Address.

  Subnet Mask
    Specify the subnet mask in 32-bit dotted-decimal notation. Dotted-decimal notation consists of four 8-bit numeric fields, ranging from 0-255, separated by periods. For example, 255.255.255.0 is a subnet mask.

    The Subnet Mask field indicates how much of the local address portion of the IP address to reserve for a subnetwork address.

    TCP/IP can divide a single network into multiple logical networks. For example, an organization can have a single IP address that is known to users outside the organization, but it can configure its local address portion of the IP address into a subnetwork number and a host number to represent different departments within the organization.

The push buttons on this page are:

Undo
  Remove any changes made since you last accessed this page.

OK
  Close the TCP/IP Configuration Notebook and save all changes made since opening it.

Cancel
  Close the TCP/IP Configuration Notebook and discard any changes made since opening it.

Help
  Get help information for this notebook page.

The subtabs on this page are:

Basic
  Go to the Configure Network Interface Parameters--Basic Options page.

Advanced 1
  Go to the Configure Advanced Options 1 page.

Advanced 2
  Go to the Configure Advanced Options 2 page.

How Do I?

For a step-by-step description of key tasks you can do from this page, go to:

- Configuring LAN Adapter Interfaces

- Changing LAN Options

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