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Chapter 5 WAN Setup
WAN IP Address
The WAN IP address is an IP address for the Device, which makes it accessible from an outside
network. It is used by the Device to communicate with other devices in other networks. It can be
static (fixed) or dynamically assigned by the ISP each time the Device 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).
ATM
Asynchronous Transfer Mode (ATM) is a LAN and WAN networking technology that provides high-
speed data transfer. ATM uses fixed-size packets of information called cells. With ATM, a high QoS
(Quality of Service) can be guaranteed. ATM uses a connection-oriented model and establishes a
virtual circuit (VC) between two endpoints before the actual data exchange begins.
PTM
Packet Transfer Mode (PTM) is packet-oriented and supported by the VDSL2 standard. In PTM,
packets are encapsulated directly in the High-level Data Link Control (HDLC) frames. It is designed
to provide a low-overhead, transparent way of transporting packets over DSL links, as an
alternative to ATM.
IPv6
IPv6 (Internet Protocol version 6), is designed to enhance IP address size and features. The ZyXEL
device can use IPv4/IPv6 dual stack to connect to IPv4 and IPv6 networks, and supports IPv6 rapid
deployment (6RD). See
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.
5.3 Before You Begin
You need to know your Internet access settings such as encapsulation and WAN IP address. Get this
information from your ISP.
5.4 The Layer 2 Interface Screen
The Device must have a layer-2 interface to allow users to use the DSL port to access the Internet.
The screen varies depending on the interface type you select.
86
Appendix B on page 271
for background information about IPv6.
P-870HNU-51b User's Guide
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Troubleshooting
