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Chapter 5: Configuring the ADSL Gateway

The Setup Tab

ADSL Gateway

RFC 1483 Routed

If you are required to use RFC 1483 Routed, then select

RFC 1483 Routed

.

•

Internet IP Address. This is the Gateway’s IP address, when seen from the WAN, or the Internet. Your ISP

will provide you with the IP Address you need to specify here.

•

Subnet Mask. This is the Gateway’s Subnet Mask. Your ISP will provide you with the Subnet Mask.

•

Gateway. Your ISP will provide you with the default Gateway Address, which is the ISP server’s IP address.

•

Primary DNS (Required) and Secondary DNS (Optional). Your ISP will provide you with at least one DNS

(Domain Name System) Server IP Address.

IPoA

If you are required to use Internet Protocol over ATM (Asynchronous Transfer Mode), then select IPoA.

•

Internet IP Address. This is the Gateway’s IP address, when seen from the WAN, or the Internet. Your ISP

will provide you with the IP Address you need to specify here.

•

Subnet Mask. This is the Gateway’s Subnet Mask. Your ISP will provide you with the Subnet Mask.

•

Gateway. Your ISP will provide you with the default Gateway Address, which is the ISP server’s IP address.

•

Primary DNS (Required) and Secondary DNS (Optional). Your ISP will provide you with at least one DNS

(Domain Name System) Server IP Address.

Figure 5-5: RFC 1483 Routed

Figure 5-6: IPoA

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Chapter 5: Configuring the ADSL Gateway

The Setup Tab

ADSL 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.

•

Service Name. Enter the name of your PPPoE service in this field.

•

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

20

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

20

seconds.

Figure 5-8: RFC 2364 PPPoA

Figure 5-7: RFC 2516 PPPoE

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Chapter 5: Configuring the ADSL Gateway

The Setup Tab

ADSL Gateway

Bridged Mode Only

If you are using your Gateway as a bridge, which makes the Gateway act like a stand-alone modem, select

Bridged 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,

keep the default values.

•

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.

•

Local 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.

•

DHCP Relay Server. If you enable the DHCP Relay mode for the

Local DHCP Server

setting, enter the IP

address for the DHCP server in the fields provided.

•

Advanced: This button displays a window that lets you reserve addresses in the DHCP range for particular

machines.

•

Autodetect LAN DHCP Server: Enable this function if you already have a DHCP server on your LAN and you

wish to continue using it.

Figure 5-10: Optional Settings

Figure 5-9: Bridged Mode Only

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Chapter 5: Configuring the ADSL Gateway

The Setup Tab

ADSL Gateway

•

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.

•

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.

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

.

Figure 5-11: Advanced DHCP

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Chapter 5: Configuring the ADSL Gateway

The Setup Tab

ADSL Gateway

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.

•

Internet IP Address. The Gateway’s current Internet IP Address is displayed here. Because it is dynamic, it will

change.

•

Status. The status of the DDNS service connection is displayed here.

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.

•

Internet IP Address. The Gateway’s current Internet IP Address is displayed here. Because it is dynamic, this

will change.

•

Status. The status of the DDNS service connection is displayed here.

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.

Figure 5-13: TZO.com

Figure 5-12: DynDNS.org

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