3Com Dual 56K Configuring LAN, Ethernet Parameters window is shown in Figure, Parameters Name

Configuring LAN Parameters 81

Configuring LAN	This section tells you how to configure the parameters of your LAN. A description
Parameters	of each LAN parameter is provided, followed by the configuration steps. The LAN
	(Ethernet) Parameters window is shown in Figure 48.

Figure 48 LAN (Ethernet) Parameters Window

Understanding LAN The LAN (Ethernet) Parameters window contains the following fields:

Parameters

Name

Displays the name for the Dual 56K LAN Modem. This name is used for DNS (Domain Name System) resolution and cannot be changed. In the example shown in Figure 48, the name LANmodem is translated to the IP address 192.168.1.1.

IP Address and Subnet Mask

The IP address is a unique address which identifies the LAN Modem on your network. The default address of the LAN Modem (192.168.1.1) is a private IP address which is automatically translated by the LAN Modem into a public, Internet-routable address whenever it has to communicate across the WAN. You should leave the default, unless you are certain that this value must be changed.

You may want to change the default IP address when setting up dial-in access between two LAN Modems. This will allow you to distinguish between the two networks, which by default are the same. The LAN Modem’s Dial-in Wizard Site-to-Site scenario will set these values automatically as needed. Refer to Chapter 8, “Configuring the Dual 56K LAN Modem for Dial-in Support” for more information.

The subnet mask identifies the subnetwork to which your computer is connected. You should leave the default unless you are certain that this value must be changed.

WARNING: If you change the IP address and/or the subnet mask, the LAN Modem will re-initialize itself to work with the new settings. All calls will be terminated and you may need to reconfigure the IP address(es) of the computer(s) connected to your LAN Modem. For a LAN using static IP addresses, you must manually