What You Need To Know - ZyXEL Communications NBG4115 User Manual

Chapter 9 WAN
• Use the General
the action the NBG4115 takes after the primary WAN interface fails, and
connection test settings for the NBG4115. This screen is available only when
you select the Fixed 3G Router Mode option in the NetUSB > General
screen.
• Use the WAN1
interface for Internet access on the NBG4115. This screen is available only when
you select the Fixed 3G Router Mode option in the NetUSB > General
screen.
• Use the 3G(WAN2)
interface for Internet access on the NBG4115. This screen is available only when
you select the Fixed 3G Router Mode option in the NetUSB > General
screen.
• Use the Advanced
configure Windows networking and bridge.

9.2.1 What You Need To Know

The following terms and concepts may help as you read through this chapter.
Encapsulation Method
Encapsulation is used to include data from an upper layer protocol into a lower
layer protocol. To set up a WAN connection to the Internet, you need to use the
same encapsulation method used by your ISP (Internet Service Provider). If your
ISP offers a dial-up Internet connection using PPPoE (PPP over Ethernet) or PPTP
(Point-to-Point Tunneling Protocol), they should also provide a username and
password (and service name) for user authentication.
WAN IP Address
The WAN IP address is an IP address for the NBG4115, which makes it accessible
from an outside network. It is used by the NBG4115 to communicate with other
devices in other networks. It can be static (fixed) or dynamically assigned by the
ISP each time the NBG4115 tries to access the Internet.
If your ISP assigns you a static WAN IP address, they should also assign you the
subnet mask and DNS server IP address(es) (and a gateway IP address if you use
the Ethernet or ENET ENCAP encapsulation method).
DNS Server Address Assignment
Use Domain Name System (DNS) to map a domain name to its corresponding IP
address and vice versa, for instance, the IP address of www.zyxel.com is
204.217.0.2. The DNS server is extremely important because without it, you must
know the IP address of a computer before you can access it.
112
(Section 9.4 on page
(Section 9.4 on page
(Section 9.4 on page
(Section 9.5 on page
117) screen to configure WAN priority,
117) screen to configure the WAN1
117) screen to configure the WAN2
126) screen to enable multicasting,
NBG4115 User's Guide