19216811.liveChapter 3 eaZy 123 Wizard
NBG6817 User’s Guide
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3.3.1
WAN Selection Type: Automatic - DHCP
Select the
Automatic - DHCP
option if your ISP did not assign you a fixed IP address.
Figure 10
WAN Selection Type: Automatic - DHCP
3.3.2
WAN Selection Type: PPPoE
Point-to-Point Protocol over Ethernet (PPPoE) functions as a dial-up connection. PPPoE is an IETF
(Internet Engineering Task Force) standard specifying how a host personal computer interacts with
a broadband modem (for example DSL, cable, wireless, etc.) to achieve access to high-speed data
networks.
For the service provider, PPPoE offers an access and authentication method that works with existing
access control systems (for instance, RADIUS).
One of the benefits of PPPoE is the ability to let end users 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 specific users.
Operationally, PPPoE saves significant effort for both the subscriber and the ISP/carrier, as it
requires no specific configuration of the broadband modem at the subscriber's site.
By implementing PPPoE directly on the NBG6817 (rather than individual computers), the computers
on the LAN do not need PPPoE software installed, since the NBG6817 does that part of the task.
Furthermore, with NAT, all of the LAN's computers will have Internet access.