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Page 56 / 236 Scroll up to view Page 51 - 55
Chapter 8 WAN
EMG2926-Q10A User’s Guide
56
8.3.1
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.
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.
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 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.
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.
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.
WAN MAC Address
The MAC address screen allows users to configure the WAN port's MAC address by either using the
factory default or cloning the MAC address from a computer on your LAN. Choose
Factory Default
to select the factory assigned default MAC Address.
Otherwise,
click
Clone the computer's MAC address - IP Address
and enter the IP address of
the computer on the LAN whose MAC you are cloning. Once it is successfully configured, the
address will be copied to configuration file. It is recommended that you clone the MAC address prior
to hooking up the WAN Port.
Page 57 / 236
Chapter 8 WAN
EMG2926-Q10A User’s Guide
57
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 1.
Figure 26
Multicast Example
In the multicast example above, systems A and D comprise one multicast group. In multicasting,
the server only needs to send one data stream and this is delivered to systems A and D.
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. The EMG2926-Q10A supports both IGMP
version 1 (
IGMP-v1
) and IGMP version 2 (
IGMP-v2
).
At start up, the EMG2926-Q10A queries all directly connected networks to gather group
membership. After that, the EMG2926-Q10A periodically updates this information. IP multicasting
can be enabled/disabled on the EMG2926-Q10A WAN interface in the Web Configurator (
WAN
).
Select
None
to disable IP multicasting on these interfaces.
8.4
Internet Connection
Use this screen to change your EMG2926-Q10A’s Internet access settings. Click
Network
>
WAN
from the
Configuration
menu. The screen differs according to the encapsulation you choose.
8.4.1
IPoE Encapsulation
This screen displays when you select
IPoE
encapsulation.
Page 58 / 236
Chapter 8 WAN
EMG2926-Q10A User’s Guide
58
Figure 27
Network > WAN > Internet Connection: IPoE Encapsulation (IPv4 Only)
Page 59 / 236
Chapter 8 WAN
EMG2926-Q10A User’s Guide
59
The following table describes the labels in this screen.
Table 14
Network > WAN > Internet Connection: IPoE Encapsulation
LABEL
DESCRIPTION
ISP Parameters for Internet Access
Encapsulation
You must choose the
IPoE
option when the WAN port is used as a regular Ethernet.
IPv4 / IPv6
Select
IPv4 Only
if you want the EMG2926-Q10A to run IPv4 only.
Select
Dual Stack
to allow the EMG2926-Q10A to run IPv4 and IPv6 at the same time.
Select
IPv6 Only
if you want the EMG2926-Q10A to run IPv6 only.
IP Address
This is not available when you select
IPv6 Only
in the
IPv6/IPv4
field.
Obtain an IP
Address
Automatically
Select this option If your ISP did not assign you a fixed IP address. This is the default
selection.
Static IP Address
Select this option If the ISP assigned a fixed IP address.
IP Address
Enter your WAN IP address in this field if you selected
Static IP Address
.
Subnet Mask
Enter the
Subnet Mask
in this field.
Gateway IP
Address
Enter a
Gateway IP Address
(if your ISP gave you one) in this field.
MTU Size
Enter the MTU (Maximum Transmission Unit) size for each packet. If a larger packet
arrives, the EMG2926-Q10A divides it into smaller fragments.
DHCP Option
This is not available when you select
IPv6 Only
in the
IPv6/IPv4
field.
Enable DHCP Option
121
Select this to enable the classless route option 121.
Enable DHCP Option
125
Select this to add vendor specific information to DHCP requests that the EMG2926-
Q10A sends to a DHCP server when getting a WAN IP address.
Enable DHCP Option
60
Select this to identify the vendor and functionality of the EMG2926-Q10A in DHCP
requests that the EMG2926-Q10A sends to a DHCP server when getting a WAN IP
address.
Vendor ID
Enter the Vendor Class Identifier (Option 60), such as the type of hardware or
firmware.
6RD
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.
The EMG2926-Q10A generates a global IPv6 prefix from its IPv4 WAN address and tunnels IPv6 traffic to the
ISP’s Border Relay router to connect to the native IPv6 Internet. The local network can also use IPv4 services.
The EMG2926-Q10A uses its configured IPv4 WAN IP to route IPv4 traffic to the IPv4 Internet.
This is available only when you select
IPv4 Only
in the
IPv6/IPv4
field.
Enable 6RD
Enable IPv6 rapid deployment to tunnel IPv6 traffic from the local network through the
ISP’s IPv4 network.
Automatically
configured by
DHCPC
Select this to have the EMG2926-Q10A detect the relay server’s IP address
automatically through DHCP.
Manually Configured
Select this if you have the IPv4 address of the relay server.
Border Relay IPv4
Address
Specify the relay server’s IPv4 address.
Page 60 / 236
Chapter 8 WAN
EMG2926-Q10A User’s Guide
60
Service Provider
IPv6 Prefix
Enter an IPv6 prefix for tunneling IPv6 traffic to the ISP’s Border Relay router and
connecting to the native IPv6 Internet.
Service Provider
IPv6 Prefix length
Enter the IPv6 prefix length.
An IPv6 prefix length specifies how many most significant bits (starting from the left) in
the address compose the network address.
IPv4 mask length
Enter the subnet mask number (1~32) for the IPv4 network.
DNS Server
This is not available when you select
IPv6 Only
in the
IPv6/IPv4
field.
First DNS Server
Second DNS Server
Third DNS Server
Select
Obtained From ISP
if your ISP dynamically assigns DNS server information
(and the EMG2926-Q10A's WAN IP address). The field to the right displays the (read-
only) DNS server IP address that the ISP assigns.
Select
User-Defined
if you have the IP address of a DNS server. Enter the DNS
server's IP address in the field to the right.
Select
None
if you do not want to configure DNS servers. If you do not configure a DNS
server, you must know the IP address of a computer in order to access it.
WAN MAC Address
The MAC address section allows users to configure the WAN port's MAC address by
either using the EMG2926-Q10A’s MAC address, copying the MAC address from a
computer on your LAN or manually entering a MAC address.
This is not available when you select
IPv6 Only
in the
IPv6/IPv4
field.
Factory default
Select
Factory default
to use the factory assigned default MAC Address.
Clone the
computer’s MAC
address - IP
Address
Select
Clone the computer's MAC address - IP Address
and enter the IP address of
the computer on the LAN whose MAC you are cloning.
Set WAN MAC
Address
Select this option and enter the MAC address you want to use.
IPv6 Address
This is not available when you select
IPv4 Only
in the
IPv6/IPv4
field.
Obtain an IP
Address
Automatically
Select this if you want to obtain an IPv6 address from a DHCPv6 server.
Static IP Address
Select this if you have a fixed IPv6 address assigned by your ISP.
IPv6 Address
Enter the IPv6 address assigned by your ISP.
Prefix length
Enter the address prefix length to specify how many most significant bits in an IPv6
address compose the network address.
IPv6 Default
Gateway
Enter the IP address of the next-hop gateway. The gateway is a router or switch on the
same segment as your EMG2926-Q10A's interface(s). The gateway helps forward
packets to their destinations.
IPv6 DNS server
This is not available when you select
IPv4 Only
in the
IPv6/IPv4
field.
Obtain IPv6 DNS
info Automatically
Select this to have the EMG2926-Q10A get the IPv6 DNS server addresses from the ISP
automatically.
Use the following
Static DNS IPv6
Address
Select this to have the EMG2926-Q10A use the IPv6 DNS server addresses you
configure manually.
IPv6 DNS Server
Enter the IPv6 DNS server address assigned by the ISP.
Table 14
Network > WAN > Internet Connection: IPoE Encapsulation (continued)
LABEL
DESCRIPTION

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