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Chapter 1
Introducing the GT 80
Your GT 80 is a fast, simple-to-use, and secure remote access router that lets PCs on your Ethernet local area network (LAN) access the Internet or another wide area network (WAN). It provides both dialup and leased line capability.
Your GT 80 is an internetworking router that forwards (or routes) data along the most efficient network-to-network paths.
This chapter provides information on your GT 80 capabilities. It includes the following topics:
Hardware Capabilities
Software Capabilities
Hardware Capabilities
Your GT 80 remote access router has two LAN connectors that let you connect to two Ethernet LANs simultaneously.
It also has a WAN connector that lets you connect to the Internet or another wide area network (WAN). You can connect your router to a WAN using either
The following figure shows how to use your router to connect your Ethernet LAN to the Internet or another WAN. 
Note: If you need X.21 or V.35 WAN capability, consider one of the GT 60 Series routers from OpenROUTE Networks.
Note: If you need dialup ISDN services, consider one of the GT 70 Series routers from OpenROUTE Networks.
Software Capabilities
Your GT 80 provides a full suite of protocols, including IP, IPX, and AppleTalk II.
The primary protocol that the GT 80 supports is the Internet Protocol (IP), which gives you the capability of communicating over LANs and WANs, including the Internet.
To use IP, you need IP network addresses. Your GT 80 comes with a preconfigured LAN IP address of 192.168.1.1 set to its ETH1 interface. If your Internet Service Provider (ISP) offers dynamic IP addressing, you can set up your router so that each time you dial into your ISP, the ISP assigns an IP address that is valid for that session. If your ISP does not provide dynamic IP addressing, you need a fixed IP address for your router. If there is a Dynamic Host Configuration Protocol (DHCP) server on your network, your router receives its IP address dynamically from the server.
Your ISP or network manager can supply you with IP network addresses and other information that you need, such as static routes or filters to be enabled. See Worksheets on page 39 for a listing of the information you need to configure your GT 80.
You configure the GT 80 by using a command line interface, which includes a question and answer script called Quick Config.
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