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15
Chapter 5: Configuring the Wireless-N ADSL2+ Gateway
The Setup Tab
Wireless-N ADSL2+ Gateway
RFC 2516 PPPoE
Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections. If
you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoE. If they do,
you will have to enable PPPoE.
User Name and Password. Enter the User Name and Password provided by your ISP.
Connect on Demand: Max Idle Time. You can configure the Gateway to disconnect the Internet connection
after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has
been terminated due to inactivity, Connect on Demand enables the Gateway to automatically re-establish
your connection as soon as you attempt to access the Internet again. To use this option, click the
Connect
on Demand
radio button. In the
Max Idle Time
field, enter the number of minutes you want to have
elapsed before your Internet connection terminates.
Keep Alive: Redial Period. If you select this option, the Gateway will periodically check your Internet
connection. If you are disconnected, then the Gateway will automatically re-establish your connection. To
use this option, click the
Keep Alive
radio button. In the
Redial Period
field, specify how often you want
the Gateway to check the Internet connection.
The default Redial Period is
30
seconds.
RFC 2364 PPPoA
Some DSL-based ISPs use PPPoA (Point-to-Point Protocol over ATM) to establish Internet connections. If you
are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoA. If they do, you
will have to enable PPPoA.
User Name and Password. Enter the User Name and Password provided by your ISP.
Connect on Demand: Max Idle Time. You can configure the Gateway to disconnect the Internet connection
after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has
been terminated due to inactivity, Connect on Demand enables the Gateway to automatically re-establish
your connection as soon as you attempt to access the Internet again. To use this option, click the
Connect
on Demand
radio button. In the
Max Idle Time
field, enter the number of minutes you want to have
elapsed before your Internet connection terminates.
Keep Alive: Redial Period. If you select this option, the Gateway will periodically check your Internet
connection. If you are disconnected, then the Gateway will automatically re-establish your connection. To
use this option, click the
Keep Alive
radio button. In the
Redial Period
field, specify how often you want
the Gateway to check the Internet connection.
The default Redial Period is
30
seconds.
Figure 5-6: RFC 2364 PPPoA
Figure 5-5: RFC 2516 PPPoE
IMPORTANT:
For Connect on Demand to work
correctly, close all Internet applications or the
Gateway may not drop the connection depending
on how often the application tries to get on the
Internet (e.g., chat programs).
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16
Chapter 5: Configuring the Wireless-N ADSL2+ Gateway
The Setup Tab
Wireless-N ADSL2+ Gateway
Bridge Mode Only
If you are using your Gateway as a bridge, which makes the Gateway act like a stand-alone modem, select
Bridge Mode Only
. All NAT and routing settings are disabled in this mode.
Optional Settings (required by some ISPs)
Host Name and Domain Name. These fields allow you to supply a host and domain name for the Gateway.
Some ISPs require these names as identification. You may have to check with your ISP to see if your
broadband Internet service has been configured with a host and domain name. In most cases, you can leave
these fields blank.
MTU and Size. The MTU (Maximum Transmission Unit) setting specifies the largest packet size permitted for
network transmission. Select
Manual
and enter the value desired in the
Size
field. It is recommended that
you leave this value in the 1200 to 1500 range. By default, MTU is configured automatically.
Network Setup
Router IP. The values for the Gateway’s Local IP Address and Subnet Mask are shown here. In most cases,
keeping the default values will work.
Local IP Address. The default value is
192.168.1.1
.
Subnet Mask. The default value is
255.255.255.0
.
Network Address Server Settings (DHCP). Configure the Gateway’s Dynamic Host Configuration Protocol
(DHCP) settings in this section.
DHCP Server. A Dynamic Host Configuration Protocol (DHCP) server automatically assigns an IP address to
each computer on your network for you. Unless you already have one, it is highly recommended that you
leave the Gateway enabled as a DHCP server. You can also use the Gateway in DHCP Relay mode. (This
setting is not available for all Encapsulation types.)
DHCP Server. If you enable the DHCP Relay mode for the
DHCP Server
setting, enter the IP address for the
DHCP relay server in the fields provided. (This setting is not available for all Encapsulation types.)
Starting IP Address. Enter a value for the DHCP server to start with when issuing IP addresses. This value
must be 192.168.1.2 or greater, because the default IP address for the Gateway is
192.168.1.1
.
Maximum Number of DHCP Users. Enter the maximum number of users/clients that can obtain an IP
address. The number will vary depending on the starting IP address entered.
Figure 5-8: Optional Settings
Figure 5-7: Bridge Mode Only
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17
Chapter 5: Configuring the Wireless-N ADSL2+ Gateway
The Setup Tab
Wireless-N ADSL2+ Gateway
Client Lease Time. The Client Lease Time is the amount of time a computer will be allowed connection to
the Gateway with its current dynamic IP address. Enter the amount of time, in minutes, that the computer
will be “leased” this dynamic IP address.
Static DNS 1-3. The Domain Name System (DNS) is how the Internet translates domain or website names
into Internet addresses or URLs. Your ISP will provide you with at least one DNS Server IP Address. You
can enter up to three DNS Server IP Addresses here. The Gateway will use these for quicker access to
functioning DNS servers.
WINS. The Windows Internet Naming Service (WINS) converts NetBIOS names to IP addresses. If you use a
WINS server, enter that server’s IP address here. Otherwise, leave this field blank.
Time Setting. Select the appropriate time zone for the Gateway’s location. If desired, check the
Automatically adjust clock for daylight saving changes
checkbox.
When finished making your changes on this tab, click the
Save Settings
button to save these changes, or click
the
Cancel Changes
button to undo your changes. Click
Help
for more information.
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18
Chapter 5: Configuring the Wireless-N ADSL2+ Gateway
The Setup Tab
Wireless-N ADSL2+ Gateway
The DDNS Tab
The Gateway offers a Dynamic Domain Name System (DDNS) feature. DDNS lets you assign a fixed host and
domain name to a dynamic Internet IP address. It is useful when you are hosting your own website, FTP server, or
other server behind the Gateway.
Before you can use this feature, you need to sign up for DDNS service at DynDNS.org or TZO.com.
DDNS
DDNS Service. If your DDNS service is provided by DynDNS.org, then select
DynDNS.org
from the drop-down
menu. If your DDNS service is provided by TZO.com, then select
TZO.com
from the drop-down menu. To disable
DDNS Service, select
Disabled
.
DynDNS.org
User Name, Password, and Host Name. Enter the User Name, Password, and Host Name of the account you
set up with DynDNS.org.
Status. The status of the DDNS service connection is displayed here.
Connect. Click the
Connect
button to start the DDNS service connection.
TZO.com
E-mail Address, Password, and Domain Name. Enter the E-mail Address, Password, and Domain Name of the
account you set up with TZO.
Status. The status of the DDNS service connection is displayed here.
Connect. Click the
Connect
button to start the DDNS service connection.
When finished making your changes on this tab, click the
Save Settings
button to save these changes, or click
the
Cancel Changes
button to undo your changes. Click
Help
for more information.
Figure 5-9: DDNS - DynDNS.org
Figure 5-10: DDNS - TZO.com
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19
Chapter 5: Configuring the Wireless-N ADSL2+ Gateway
The Setup Tab
Wireless-N ADSL2+ Gateway
The Advanced Routing Tab
The
Advanced Routing
screen allows you to configure the NAT, dynamic routing, and static routing settings.
Advanced Routing
Operating Mode. In this section, you will configure the Gateway’s general routing settings.
NAT. NAT is a security feature that is enabled by default. It enables the Gateway to translate IP addresses
of your local area network to a different IP address for the Internet. To disable NAT, click the
Disabled
radio button.
Dynamic Routing. With Dynamic Routing you can enable the Gateway to automatically adjust to physical
changes in the network’s layout. Using RIP, the Gateway determines the network packets’ route based on the
fewest number of hops between the source and the destination. The RIP protocol regularly broadcasts routing
information to other Gateways on the network.
RIP. If you have multiple routers, you may want to use the Routing Information Protocol (RIP) so the routers
can exchange routing information with each other. To use RIP, select the
Enabled
radio button. Otherwise,
keep the default,
Disabled
.
RIP Version. Select the protocol version you want,
RIP1
or
RIPv2
.
Static Routing. If the Gateway is connected to more than one network, it may be necessary to set up a static
route between them. A static route is a pre-determined pathway that network information must travel to
reach a specific host or network. To create a static route, change the following settings:
Select set number. Select the number of the static route from the drop-down menu. The Gateway
supports up to 20 static route entries. If you need to delete a route, then select the entry and click the
Delete This Entry
button.
Destination IP Address. The Destination IP Address is the address of the remote network or host to which
you want to assign a static route. Enter the IP address of the host for which you wish to create a static
route. If you are building a route to an entire network, be sure that the network portion of the IP address is
set to 0.
Subnet Mask. Enter the Subnet Mask (also known as the Network Mask), which determines which portion
of an IP address is the network portion, and which portion is the host portion.
Gateway. Enter the IP address of the gateway device that allows for contact between the Gateway and the
remote network or host.
Figure 5-11: Advanced Routing

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