What You Need To Know About Wan - ZyXEL Communications AMG1312-T10D User Manual

Chapter 5 WAN Setup
• Use the More Connections screen
connections.
• Use the 3G Backup screen to configure 3G WAN connection

5.1.2 What You Need to Know About WAN

Encapsulation Method
Encapsulation includes 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.
WAN IP Address
The Device uses its WAN IP address to connect to the Internet and communicate with devices in
other networks. It can be static (fixed) or dynamically assigned by the ISP when the Device
connects to 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
Devices use the IGMP (Internet Group Management Protocol) network-layer protocol to establish
membership in a multicast group - it does not carry user data. IGMP versions 2 and 3 offer
improvements over the widely-used version 1.
IPv6
IPv6 (Internet Protocol version 6) provides increased IP address space and enhanced features in
comparison to IPv4. The Device supports IPv4/IPv6 dual stack and can connect to IPv4 and IPv6
networks.
IPv6 Rapid Deployment
Use IPv6 Rapid Deployment (6rd) when the local network uses IPv6 and the ISP has an IPv4
network. When the Device has an IPv4 WAN address and you set IPv6/IPv4 Dual Stack to IPv4,
you can enable 6rd to encapsulate IPv6 packets in IPv4 packets to cross the ISP's IPv4 network.
The Device generates a global IPv6 prefix from its IPv4 WAN address and tunnels IPv6 traffic to the
ISP's Border Relay router (BR in the figure) to connect to the native IPv6 Internet. The local
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(Section 5.3 on page 40) to set up additional Internet access
(Section 5.4 on page 46).
AMG1312-T10D User's Guide