ZyXEL p-660hwp Guia Do Utilizador

P-660HWP-Dx User’s Guide

This chapter describes how to configure WAN settings.

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

Be sure to use the encapsulation method required by your ISP. The P-660HWP-Dx supports 
the following methods.

The MAC Encapsulated Routing Link Protocol (ENET ENCAP) is only implemented with the 
IP network protocol. IP packets are routed between the Ethernet interface and the WAN 
interface and then formatted so that they can be understood in a bridged environment. For 
instance, it encapsulates routed Ethernet frames into bridged ATM cells. ENET ENCAP 
requires that you specify a gateway IP address in the ENET ENCAP Gateway field in the 
second wizard screen. You can get this information from your ISP.

PPPoE (Point-to-Point Protocol over Ethernet) provides access control and billing 
functionality in a manner similar to dial-up services using PPP. PPPoE is an IETF standard 
(RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem 
(DSL, cable, etc.) connection. 
For the service provider, PPPoE offers an access and authentication method that works with 
existing access control systems (for example RADIUS).
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 P-660HWP-Dx (rather than individual computers), 
the computers on the LAN do not need PPPoE software installed, since the P-660HWP-Dx 
does that part of the task. Furthermore, with NAT, all of the LANs’ computers will have 
access.