- Billion ADSL Modem/Router With Single Ethernet Port User's Manual

Chapter 5

WAN Setup

This chapter describes how to configure WAN settings.

5.1 WAN Overview

A WAN (Wide Area Network) is an outside connection to another network or the Internet.

See the Wizard Setup chapter for more information on the fields in the WAN screens.

5.2 PPPoE Encapsulation

The BIPAC 5100S supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF

Draft standard (RFC 2516) specifying how a personal computer (PC) interacts with a

broadband modem (DSL, cable, wireless, etc.) connection. The PPPoE option is for a dial-up

connection using PPPoE.

For the service provider, PPPoE offers an access and authentication method that works with

existing access control systems (for example Radius). PPPoE provides a login and

authentication method that the existing Microsoft Dial-Up Networking software can activate,

and therefore requires no new learning or procedures for Windows users.

One of the benefits of PPPoE is the ability to let you access one of multiple network services, a

function known as dynamic service selection. This enables the service provider to easily

create and offer new IP services for individuals.

Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires

no specific configuration of the broadband modem at the customer site.

By implementing PPPoE directly on the BIPAC 5100S (rather than individual computers), the

computers on the LAN do not need PPPoE software installed, since the BIPAC 5100S does

that part of the task. Furthermore, with NAT, all of the LANs’ computers will have access.

5.3 PPTP Encapsulation

Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables secure transfer of

data from a remote client to a private server, creating a Virtual Private Network (VPN) using

TCP/IP-based networks.