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Page 31 / 125 Scroll up to view Page 26 - 30
TD-W9970
300Mbps Wireless N USB VDSL/ADSL Modem Router User Guide
20
Figure 4-5
WAN Service Setup:
Enable IPv4
：
Check the box to enable IPv4.
IP Address:
Enter the IP address in dotted-decimal notation provided by your ISP.
Subnet Mask:
Enter the subnet Mask in dotted-decimal notation provided by your ISP,
usually is 255.255.255.0.
Gateway
(Optional): Enter the gateway IP address in dotted-decimal notation provided by
your ISP.
DNS Server/ Secondary DNS Server:
Here you can set DNS Server (at least one) manually.
The Route will use this DNS Server for priority.
Default Gateway:
Select a WAN Interface from the drop-down list as the IPv4 default
gateway.
Enable IPv6:
Check the box to enable IPv6.
Page 32 / 125
TD-W9970
300Mbps Wireless N USB VDSL/ADSL Modem Router User Guide
21
IPv6 Address:
Enter the IPv6 address provided by your ISP.
Prefix Length:
Enter the prefix length of the IPv6 address. The default value is 64.
IPv6 Gateway:
Enter the gateway IPv6 address provided by your ISP.
IPv6 DNS Server / Secondary IPv6 DNS Server:
Here you can set IPv6 DNS Server (at
least one) manually. The Route will use this IPv6 DNS Server for priority.
IPv6 Default Gateway:
Select a WAN Interface from the drop-down list as the IPv6 default
gateway.
Click
Advance
, advanced selections of WAN Service Setup can be shown.
MTU (Bytes):
Maximum Transmission Unit Size. Check this box then you can change the
MTU size. The default
MTU
value is 1500 Bytes. It is not recommended that you change the
default value unless required by your ISP.
Enable NAT:
This technology translates the IP addresses of a local area network to a
different IP address for the Internet. If this modem router is hosting your network’s connection
to the Internet, please select the check box. If another Router exists in your network, you don’t
need to select the option.
Enable Fullcone NAT:
It is a type of NAT, if not enabled, the default NAT will act.
Enable SPI Firewall:
A SPI firewall enhances network’s security. Select the option to use a
firewall, or else without a firewall.
Enable
IGMP Proxy
: IGMP (Internet Group Management Protocol) is used to manage
multicasting on TCP/IP networks. Some ISPs use IGMP to perform remote configuration for
client devices, such as the modem router. The default value is disabled, and if you are not
sure, please contact your ISP or just leave it.
Click the
Save
button to save the settings.
2) Dynamic IP
Select this option, the modem router will be able to obtain IP network information dynamically from
a DHCP server provided by your ISP.
Page 33 / 125
TD-W9970
300Mbps Wireless N USB VDSL/ADSL Modem Router User Guide
22
Figure 4-6
Click
Advance
, advanced selections for WAN Service Setup can be shown.
MTU (Bytes):
Maximum Transmission Unit Size. Check this box then you can change the
MTU size. The default
MTU
value is 1500 Bytes. It is not recommended that you change the
default value unless required by your ISP.
Enable NAT:
This technology translates the IP addresses of a local area network to a different
IP address for the Internet. If this modem router is hosting your network’s connection to the
Internet, please select the check box. If another Router exists in your network, you don’t need
to select the option.
Enable Fullcone NAT
: It is a type of NAT, if not enabled, the default NAT will act.
Enable SPI Firewall:
A SPI firewall enhances network’s security. Select the option to use a
firewall, or else without a firewall.
Enable
IGMP Proxy
: IGMP (Internet Group Management Protocol) is used to manage
multicasting on TCP/IP networks. Some ISPs use IGMP to perform remote configuration for
client devices, such as the modem router. The default value is disabled, and if you are not sure,
please contact your ISP or just leave it.
Page 34 / 125
TD-W9970
300Mbps Wireless N USB VDSL/ADSL Modem Router User Guide
23
Get IP with Unicast:
This is disabled
by default. The minority of DHCP Server of ISP will not
support to enable this. When the Route is connected right but IP cannot get, you can select
this box.
Set DNS Server manually:
Choose
“Set DNS Server manually”, you can set DNS Server
manually here. The modem router will use this DNS Server for priority.
Get IPv6 Address with Unicast:
This is disabled
by default. The minority of DHCPv6 Server
of ISP will not support to enable this. When the modem router is connected right but cannot
get IPv6 address, you can select this box.
Set IPv6 DNS Server manually:
Choose
“Set IPv6 DNS Server manually”, you can set IPv6
DNS Server manually here. The modem router will use this IPv6 DNS Server for priority.
Host Name:
Here displays model No. of your modem router.
Click the
Save
button to save the settings.
3) PPPoE
If your ISP provides a
PPPoE
connection and you need to use an ATM Interface, choose
PPPoE
in the drop-down list, and then the screen will be displayed as below.
Figure 4-7
PPP Username/Password/Confirm password
: Enter the User Name, Password and
Confirm password provided by your ISP. These fields are case-sensitive.
Page 35 / 125
TD-W9970
300Mbps Wireless N USB VDSL/ADSL Modem Router User Guide
24
Connection Mode:
For PPPoE connection, you can select
Always on
or
Connect on
demand
or
Connect manually
. Connect on demand is dependent on the traffic. If there is no
traffic (or
Idle
) for a pre-specified period of time, the connection will
drop
down automatically.
And once there is traffic send or receive, the connection will be automatically on.
Authentication Type
: Select the
Authentication Type
from the drop-down list, the default
method is
AUTO_AUTH
, and you can leave it as a default setting.
Enable IPv4:
Check this box to enable IPv4.
Enable IPv6:
Check this box to enable IPv6.
Default Gateway:
Select a WAN connection from the drop-down list as the IPv4 default
gateway.
IPv6 Default Gateway:
Select a WAN connection from the drop-down list as the IPv6 default
gateway.
Click
Advance
, advanced selections for WAN Service Setup can be shown.
Service Name/Server Name
: Enter the Service Name and Server Name if it was provided by
your ISP. You can leave them blank, if the ISP doesn’t provide them.
MTU (Bytes):
Maximum Transmission Unit Size. Check this box then you can change the
MTU size. The default
MTU
value is 1500 Bytes. It is not recommended that you change the
default value unless required by your ISP.
Enable Fullcone NAT
: It is a type of NAT, if not enabled, the default NAT will act.
Enable SPI Firewall:
A SPI firewall enhances network’s security. Select the option to use a
firewall, or else without a firewall.
Enable
IGMP Proxy
: IGMP (Internet Group Management Protocol) is used to manage
multicasting on TCP/IP networks. Some ISPs use IGMP to perform remote configuration for
client devices, such as the modem router. The default value is disabled, and if you are not
sure, please contact your ISP or just leave it.
Use IP address specified by ISP:
Choose “Use IP address specified by ISP”, you can enter
the IP address provided by your ISP.
Set DNS Server manually:
Choose
“Set DNS Server manually”, you can set DNS Server
manually here. The modem router will use this DNS Server for priority.
Use IPv6 address specified by ISP:
Choose “Use IPv6 address specified by ISP”, you can
enter the IPv6 address provided by your ISP.
Set IPv6 DNS Server manually:
Choose
“Set IPv6 DNS Server manually”, you can set IPv6
DNS Server manually here. The modem router will use this IPv6 DNS Server for priority.
Click the
Save
button to save the settings.
4) Bridge
If you select this type of connection, the modem router can be configured to act as a bridging
device between your LAN and your ISP. Bridges are devices that enable two or more networks to
communicate as if they are two segments of the same physical LAN.

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