Filter
Top Products
Reference Manual for the Model DG814 DSL Modem Internet Gateway
1-4 Introduction
The Model DG814 gateway incorporates Auto Uplink
TM
technology (also called MDI/MDIX).
Each LOCAL Ethernet port will automatically sense whether the Ethernet cable plugged into the
port should have a 'normal' connection (e.g. connecting to a PC) or an 'uplink' connection (e.g.
connecting to a router, switch, or hub). That port will then configure itself to the correct
configuration. This feature also eliminates the need to worry about crossover cables, as Auto
Uplink
TM
will accommodate either type of cable to make the right connection.
TCP/IP
The Model DG814 gateway supports the Transmission Control Protocol/Internet Protocol (TCP/
IP) and Routing Information Protocol (RIP).
For further information about TCP/IP, refer to Appendix B, “Networks and Routing Basics.”
• IP Address Sharing by NAT
The Model DG814 gateway allows several networked PCs to share an Internet account using
only a single IP address, which may be statically or dynamically assigned by your Internet
service provider (ISP). This technique, known as Network Address Translation (NAT), allows
the use of an inexpensive single-user ISP account.
• Automatic Configuration of Attached PCs by DHCP
The Model DG814 gateway dynamically assigns network configuration information,
including IP,
gateway, and domain name server (DNS) addresses, to attached PCs on the LAN
using the Dynamic Host Configuration Protocol (DHCP). This feature greatly simplifies
configuration of PCs on your local network.
• DNS Proxy
When DHCP is enabled and no DNS addresses are specified, the gateway provides its own
address as a DNS server to the attached PCs. The gateway obtains actual DNS addresses from
the ISP during connection setup and forwards DNS requests from the LAN.
• PPP over Ethernet (PPPoE and PPP over ATM (PPPoA)
PPP over Ethernet is a protocol for connecting remote hosts to the Internet over an always-on
connection by simulating a dial-up connection. This feature eliminates the need to run a login
program such as Entersys or WinPOET on your PC.
Easy Installation and Management
You can install, configure, and operate the Model DG814 DSL Modem Internet Gateway within
minutes after connecting it to the network. The following features simplify installation and
management tasks: