Configuring LAN Parameters 81Configuring LANParametersThis section tells you how to configure the parameters of your LAN. A descriptionof 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 WindowUnderstanding LANParametersThe LAN (Ethernet) Parameters window contains the following fields:NameDisplays 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 shownin Figure 48, the name LANmodem is translated to the IP address 192.168.1.1.IP Address and Subnet MaskThe IP address is a unique address which identifies the LAN Modem on yournetwork. The default address of the LAN Modem (192.168.1.1) is a private IPaddress which is automatically translated by the LAN Modem into a public,Internet-routable address whenever it has to communicate across the WAN. Youshould 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 accessbetween two LAN Modems. This will allow you to distinguish between the twonetworks, which by default are the same. The LAN Modem’s Dial-in WizardSite-to-Site scenario will set these values automatically as needed. Refer toChapter 8, “Configuring the Dual 56K LAN Modem for Dial-in Support” for moreinformation.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 bechanged.WARNING: If you change the IP address and/or the subnet mask, the LAN Modemwill re-initialize itself to work with the new settings. All calls will be terminatedand you may need to reconfigure the IP address(es) of the computer(s) connectedto your LAN Modem. For a LAN using static IP addresses, you must manually
