ZyXEL Communications NBG4615 User Manual

 Chapter 17 WAN

NBG4615 User’s Guide

The NBG4615 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.

Use Fixed IP 
Address

Select this option If the ISP assigned a fixed IP address. 

IP Address

Enter your WAN IP address in this field if you selected Use Fixed IP Address. 

IP Subnet 

Mask

Enter the IP Subnet Mask in this field.

Gateway IP 

Address

Enter a Gateway IP Address (if your ISP gave you one) in this field.

WAN DNS Assignment

First DNS Server

Second DNS 
Server

Select From ISP if your ISP dynamically assigns DNS server information (and 
the NBG4615'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 DNS 
server's IP address in the field to the right. If you chose User-Defined, but 
leave the IP address set to 0.0.0.0, User-Defined changes to None after you 
click Apply. If you set a second choice to User-Defined, and enter the same IP 
address, the second User-Defined changes to None after you click Apply. 

Select None if you do not want to configure DNS servers. If you do not 
configure a DNS server, you must know the IP address of a computer in order to 
access it.

WAN MAC Address The MAC address section allows users to configure the WAN port's MAC address 

by either using the NBG4615’s MAC address, copying the MAC address from a 
computer on your LAN or manually entering a MAC address. 

Factory default

Select Factory default to use the factory assigned default MAC Address.

Clone the 
computer’s MAC 
address - IP 
Address

Select Clone the computer's MAC address - IP Address and enter the IP 
address of the computer on the LAN whose MAC you are cloning.

Set WAN MAC 
Address

Select this option and enter the MAC address you want to use.

Apply

Click Apply to save your changes back to the NBG4615.

Cancel

Click Cancel to begin configuring this screen afresh.

Network > WAN > Internet Connection: Ethernet Encapsulation (continued)