ZyXEL Communications Corporation EMG2926Q10A Manuel D’Utilisation
Chapter 10 WAN
EMG2926-Q10A User’s Guide
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10.3.1 Configuring Your Internet Connection
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.
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 EMG2926-Q10A, which makes it accessible from an
outside network. It is used by the EMG2926-Q10A to communicate with other devices in other
networks. It can be static (fixed) or dynamically assigned by the ISP each time the EMG2926-Q10A
tries to access the Internet.
outside network. It is used by the EMG2926-Q10A to communicate with other devices in other
networks. It can be static (fixed) or dynamically assigned by the ISP each time the EMG2926-Q10A
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 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.
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.
The EMG2926-Q10A can get the DNS server addresses in the following ways.
1
The ISP tells you the DNS server addresses, usually in the form of an information sheet, when you
sign up. If your ISP gives you DNS server addresses, manually enter them in the DNS server fields.
sign up. If your ISP gives you DNS server addresses, manually enter them in the DNS server fields.
2
If your ISP dynamically assigns the DNS server IP addresses (along with the EMG2926-Q10A’s WAN
IP address), set the DNS server fields to get the DNS server address from the ISP.
IP address), set the DNS server fields to get the DNS server address from the ISP.
IPv6 Rapid Deployment
Use IPv6 Rapid Deployment (6rd) when the local network uses IPv6 and the ISP has an IPv4
network. When the EMG2926-Q10A has an IPv4 WAN address and you set IPv6/IPv4 mode to
IPv4 Only, you can enable 6rd to encapsulate IPv6 packets in IPv4 packets to cross the ISP’s IPv4
network.
network. When the EMG2926-Q10A has an IPv4 WAN address and you set IPv6/IPv4 mode to
IPv4 Only, you can enable 6rd to encapsulate IPv6 packets in IPv4 packets to cross the ISP’s IPv4
network.
The EMG2926-Q10A 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 network can also use IPv4 services. The EMG2926-Q10A uses it’s configured IPv4 WAN IP to
route IPv4 traffic to the IPv4 Internet.
traffic to the ISP’s Border Relay router (BR in the figure) to connect to the native IPv6 Internet. The
local network can also use IPv4 services. The EMG2926-Q10A uses it’s configured IPv4 WAN IP to
route IPv4 traffic to the IPv4 Internet.