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Chapter 7 WAN
Table 38 Network > WAN > Internet Connection: Ethernet Encapsulation (continued)
LABEL
First DNS Server
Second DNS
Server
WAN MAC Address
Factory default
Clone the
computer's MAC
address - MAC
Address
Set WAN MAC
Address
Apply
Reset
7.3.2 PPPoE Encapsulation
The NBG-418N supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF standard
(RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem (DSL,
cable, wireless, etc.) connection. The PPP over Ethernet 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).
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 NBG-418N (rather than individual computers), the
computers on the LAN do not need PPPoE software installed, since the NBG-418N does that part of
the task. Furthermore, with NAT, all of the LANs' computers will have access.
88
DESCRIPTION
Select From ISP if your ISP dynamically assigns DNS server information (and the NBG-
418N's WAN IP address). The field to the right displays the (read-only) DNS server IP
address that the ISP assigns.
Select User-Defined if you have the IP address of a DNS server. Enter the primary and
secondary DNS server's IP address in the fields to the right.
The MAC address section allows users to configure the WAN port's MAC address by either
using the NBG-418N's MAC address, copying the MAC address from a computer on your
LAN or manually entering a MAC address.
Select Factory default to use the factory assigned default MAC Address.
Select this option to clone the MAC address of the computer (displaying in the screen)
from which you are configuring the NBG-418N. Once it is successfully configured, the
address will be copied to the rom file. It will not change unless you change the setting or
upload a different ROM file.
Select this option and enter the MAC address you want to use.
Click Apply to save your changes back to the NBG-418N.
Click Reset to begin configuring this screen afresh.
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