ZyXEL 2WG Guía Del Usuario
Chapter 8 WAN and 3G Screens
ZyWALL 2WG User’s Guide
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• Use the Traffic Redirect screen (
) to configure an alternative
gateway.
• Use the Dial Backup screen (
) to configure the backup WAN dial-
up connection.
8.1.2 What You Need To Know About WAN
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 PPPoA, they should also provide a username and
password (and service name) for user authentication.
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 PPPoA, 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 ZyWALL, which makes it accessible from an
outside network. It is used by the ZyWALL to communicate with other devices in other
networks. It can be static (fixed) or dynamically assigned by the ISP each time the ZyWALL
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).
outside network. It is used by the ZyWALL to communicate with other devices in other
networks. It can be static (fixed) or dynamically assigned by the ISP each time the ZyWALL
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).
3G
3G (Third Generation) is a digital, packet-switched wireless technology. Bandwidth usage is
optimized as multiple users share the same channel and bandwidth is only allocated to users
when they send data. It allows fast transfer of voice and non-voice data and provides
broadband Internet access to mobile devices.
optimized as multiple users share the same channel and bandwidth is only allocated to users
when they send data. It allows fast transfer of voice and non-voice data and provides
broadband Internet access to mobile devices.
Multiple WAN Features
You can use a second connection for load sharing to increase overall network throughput or as
a backup to enhance network reliability.
The ZyWALL has one WAN port. When the ZyWALL is in router mode, you can optionally
insert a 3G card to add a second WAN interface. You can connect one interface to one ISP (or
network) and connect the other to a second ISP (or network).
The ZyWALL can balance the load between the two WAN interfaces (see
a backup to enhance network reliability.
The ZyWALL has one WAN port. When the ZyWALL is in router mode, you can optionally
insert a 3G card to add a second WAN interface. You can connect one interface to one ISP (or
network) and connect the other to a second ISP (or network).
The ZyWALL can balance the load between the two WAN interfaces (see
).
You can use policy routing to specify the WAN interface that specific services go through. An
ISP may give traffic from certain (more expensive) connections priority over the traffic from
other accounts. You could route delay intolerant traffic (like voice over IP calls) through this
kind of connection. Other traffic could be routed through a cheaper broadband Internet
connection that does not provide priority service. If one WAN interface's connection goes
down, the ZyWALL can automatically send its traffic through the other WAN interface. See
ISP may give traffic from certain (more expensive) connections priority over the traffic from
other accounts. You could route delay intolerant traffic (like voice over IP calls) through this
kind of connection. Other traffic could be routed through a cheaper broadband Internet
connection that does not provide priority service. If one WAN interface's connection goes
down, the ZyWALL can automatically send its traffic through the other WAN interface. See
for details.