Before You Begin; The Internet Access Setup Screen - ZyXEL Communications P-660HN User Manual

Chapter 5 WAN Setup
WAN IP Address
The WAN IP address is an IP address for the ZyXEL Device, which makes it accessible from
an outside network. It is used by the ZyXEL Device to communicate with other devices in
other networks. It can be static (fixed) or dynamically assigned by the ISP each time the
ZyXEL 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).
Multicast
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1
recipient) or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to
a group of hosts on the network - not everybody and not just one.
IGMP
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish
membership in a Multicast group - it is not used to carry user data. There are three versions of
IGMP. IGMP version 2 is an improvement over version 1, but IGMP version 1 is still in wide
use. IGMP version 3 supports source filtering, reporting or ignoring traffic from specific
source address to a particular host on the network.
Finding Out More
See Section 5.5 on page 82

5.1.3 Before You Begin

You need to know your Internet access settings such as encapsulation and WAN IP address.
Get this information from your ISP.

5.2 The Internet Access Setup Screen

Use this screen to change your ZyXEL Device's WAN settings. Click Network > WAN >
Internet Access Setup. The screen differs by the WAN type and encapsulation you select.
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for technical background information on WAN.
P-660HN-Fx User's Guide