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Page 46 / 123 Scroll up to view Page 41 - 45
TD-W9980
N600 Wireless Dual Band Gigabit VDSL2 Modem Router User Guide
36
Figure 4-19
IP Address:
You can configure the modem router’s IP Address and Subnet Mask for LAN
Interface.
IP Address:
Enter the modem router’s local IP Address, then you can access to the
Web-based management page via the IP Address, the default value is 192.168.1.1.
Subnet Mask:
Enter the modem router’s Subnet Mask, the default value is 255.255.255.0.
Enable IGMP Snooping:
If you select the option, please choose the IGMP Mode
:
Standard
Mode or Blocking Mode.
Enable Second IP:
You can configure the modem router’s second IP Address and Subnet
Mask for LAN Interface through which you can also access to the Web-based management
page as the default IP Address and Subnet Mask.
DHCP Server:
These settings allow you to configure the modem router‘s Dynamic Host
Configuration Protocol (DHCP) server function. The DHCP server is enabled by default for the
modem router’s Ethernet LAN interface. DHCP service will supply IP settings to computers
which are configured to automatically obtain IP settings that are connected to the modem
router though the Ethernet port. When the modem router is set for DHCP, it becomes the
default gateway for DHCP client connected to it. Keep in mind that if you change the IP
address of the modem router, you must change the range of IP addresses in the pool used for
DHCP on the LAN.
Start IP Address:
Enter a value for the DHCP server to start with when issuing IP
addresses. Because the default IP address for the modem router is 192.168.1.1, the
default Start IP Address is
192.168.1.100
, and the Start IP Address must be 192.168.1.100
or greater, but smaller than 192.168.1.254.
Page 47 / 123
TD-W9980
N600 Wireless Dual Band Gigabit VDSL2 Modem Router User Guide
37
End IP Address:
Enter a value for the DHCP server to end with when issuing IP
addresses. The End IP Address must be smaller than 192.168.1.254. The default End IP
Address is
192.168.1.254
.
Leased Time:
The Leased Time is the amount of time in which a network user will be
allowed connection to the modem router with their current dynamic IP address. Enter the
amount of time, in hours, then the user will be “leased” this dynamic IP address. After the
dynamic IP address has expired, the user will be automatically assigned a new dynamic IP
address. The default is
1440
minutes.
The detailed configuration about DHCP server, please refer to section
4.6 DHCP Server
.
4.5.4 IPv6 LAN Settings
Choose menu “
Network
”
“
IPv6 LAN Settings
”, you can configure LAN IPv6 interface for your
modem router.
Figure 4-20
Address Autoconfiguration Type:
Select a type to assign IPv6 addresses to the computers
in your LAN. RADVD and DHCPv6 Server are provided.
1)
If RADVD is selected, it doesn’t need to be configured.
2)
If DHCPv6 Server is selected, please complete the following parameters.
Figure 4-21
Start IPv6 Address:
Enter a value for the DHCPv6 server to start with when issuing IPv6
addresses.
End IPv6 Address:
Enter a value for the DHCPv6 server to end with when issuing IPv6
addresses.
Page 48 / 123
TD-W9980
N600 Wireless Dual Band Gigabit VDSL2 Modem Router User Guide
38
Leased Time:
The Leased Time is the amount of time in which a network user will be
allowed connection to the modem router with their current dynamic IPv6 address. Enter
the amount of time, in hours, then the user will be “leased” this dynamic IPv6 address.
After the dynamic IPv6 address has expired, the user will be automatically assigned a
new dynamic IPv6 address. The default is 86400 seconds.
Site Prefix Configuration Type:
Select a type to assign prefix to IPv6 addresses. Delegated
and Static are provided.
1)
If Delegated is selected, please complete the following parameters.
Figure 4-22
Prefix Delegated WAN Connection:
Select a WAN connection form the drop-down list
to assign prefix.
2)
If Static is selected, please complete the following parameters.
Figure 4-23
Site Prefix:
Enter a value for the site prefix.
Site Prefix Length:
Enter a value for the site prefix length.
Click the
Save
button to save the settings.
4.5.5 MAC Clone
Choose menu “
Network
”
“
MAC Clone
”, you can configure the MAC address of the WAN
Interface as shown below.
The WAN Interface List displays the WAN Interfaces you have configured on the section
4.5.1
WAN Settings
and its default MAC Address. You can select corresponding WAN Interface from the
drop-down list and click
Clone MAC To
button to clone your current PC MAC, and then click
Save
.
Figure 4-24
Page 49 / 123
TD-W9980
N600 Wireless Dual Band Gigabit VDSL2 Modem Router User Guide
39
Note:
Only the WAN Ports can use MAC Address Clone function. All the clone MAC addresses must not
be the same with each other.
4.5.6 ALG Settings
Choose menu “
Network
”
“
ALG Settings
”, and then you can configure the basic security in the
screen as shown in Figure 4-25.
Figure 4-25
Virtual Private Network (VPN):
VPN Passthrough must be enabled if you want to allow VPN
tunnels using VPN protocols to pass through the modem router.
PPTP Passthrough:
Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point
Protocol (PPP) to be tunneled through an IP network. To allow PPTP tunnels to pass
through the modem router, click
Enable
.
L2TP Passthrough:
Layer Two Tunneling Protocol (L2TP) is the method used to
enable Point-to-Point sessions via the Internet on the Layer Two level. To allow L2TP
tunnels to pass through the modem router, click
Enable
.
IPSec Passthrough:
Internet Protocol security (IPSec) is a suite of protocols for
ensuring private, secure communications over Internet Protocol (IP) networks, through
the use of cryptographic security services. To allow IPSec tunnels to pass through the
modem router, click
Enable
.
Application Layer Gateway (ALG):
It is recommended to enable Application Layer Gateway
(ALG) because ALG allows customized Network Address Translation (NAT) traversal filters to
be plugged into the gateway to support address and port translation for certain application
layer "control/data" protocols such as FTP, TFTP etc.
FTP ALG:
To allow FTP clients and servers to transfer data across NAT, click
Enable
.
TFTP ALG:
To allow TFTP clients and servers to transfer data across NAT, click
Enable
.
Page 50 / 123
TD-W9980
N600 Wireless Dual Band Gigabit VDSL2 Modem Router User Guide
40
H323 ALG:
To allow H323 clients and servers to transfer data across NAT, click
Enable
.
SIP ALG:
To allow SIP clients and servers to transfer data across NAT, click
Enable
.
Click the
Save
button to save your settings.
4.5.7 DSL Settings
Choose “
Advanced Setup
”
“
DSL Settings
”, you can select the DSL Modulation Type and
Annex Type in the next screen. The DSL feature can be selected when you meet the physical
connection problem. Please check the proper settings with your Internet service provider.
Figure 4-26
DSL Modulation Type:
Select the DSL operation Modulation Type which your DSL
connection uses.
Annex Type:
Select the DSL operation Annex Type which your DSL connection uses.
Click the
Save
button to save your settings.
4.5.8 IPSec VPN
Choose “
Network
”
“
IPSec VPN
”, you can Add/Remove or Enable/Disable the IPSec tunnel
connections on the screen as shown in Figure 4-27.
Figure 4-27
This section will guide you to configure a VPN tunnel between two TD-W9980s. The topology is as
follows.

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