Manage Internet, WAN, and LAN Settings and Use the WPS Wizard

46

AC1900, N900, and N450 WiFi

Cable Data Gateways



To set up a default DMZ server:

1.

On your computer, launch an Internet browser such as Mozilla Firefox or Microsoft

Internet Explorer.

2.

In the address field of your browser, enter

http://routerlogin.net

.

You are prompted to enter a user name and password.

3.

Type

admin

for the user name and type your password.

If you did not yet personalize your password, type

password

for the password.

4.

Click the

OK

button.

The BASIC Home screen displays.

5.

Select

ADVANCED > Setup > WAN Setup

.

The WAN Setup screen displays.

6.

Select the

Default DMZ Server

check box.

7.

Type the IP address for the DMZ server.

8.

Click the

Apply

button.

Your settings are saved and the cable data gateway might restart.

Manage the LAN Settings

You can change the LAN IP services such as Dynamic Host Configuration Protocol (DHCP)

and Routing Information Protocol (RIP).

By default, the cable data gateway uses private IP addresses on the LAN side and functions

as a DHCP server. The cable data gateway’s default LAN IP configuration is as follows:

•

LAN IP address.

192.168.0.1

•

Subnet mask.

255.255.255.0

These addresses are part of the designated private address range for use in private networks

and are suitable for most applications. If your network uses a different IP addressing scheme,

then make those changes in the LAN Setup screen.

Note:

If you change the LAN IP address of the cable data gateway while you

are connected through the browser, you are disconnected. To

continue to use the genie menus, open a new connection to the new

IP address and log in again.

Manage Internet, WAN, and LAN Settings and Use the WPS Wizard

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AC1900, N900, and N450 WiFi

Cable Data Gateways

View or Change the LAN Settings

You can view or change the LAN settings.



To view or change the LAN settings:

1.

On your computer, launch an Internet browser such as Mozilla Firefox or Microsoft

Internet Explorer.

2.

In the address field of your browser, enter

http://routerlogin.net

.

You are prompted to enter a user name and password.

3.

Type

admin

for the user name and type your password.

If you did not yet personalize your password, type

password

for the password.

4.

Click the

OK

button.

The BASIC Home screen displays.

5.

Select

ADVANCED > Setup > LAN Setup

.

The LAN Setup screen displays.

6.

View or change the LAN settings.

Manage Internet, WAN, and LAN Settings and Use the WPS Wizard

48

AC1900, N900, and N450 WiFi

Cable Data Gateways

The following table describes the fields on the LAN Setup screen.

Field

Description

Device Name

By default, the device name is the cable data gateway model. You can change the

device name to another name.

LAN TCP/IP Setup

IP Address

The LAN IP address of the cable data gateway. The default LAN IP address is

192.168.0.1.

IP Subnet Mask

The LAN subnet mask of the cable data gateway. Combined with the IP address,

the IP subnet mask allows a device to detect which other addresses are local to it

and which must be reached through a gateway or cable data gateway. The default

IP subnet mask is 255.255.255.0.

Use Gateway as DHCP

Server

By default, the

Use Router as DHCP Server

check box is selected so that the

cable data gateway functions as a Dynamic Host Configuration Protocol (DHCP)

server. For more information, see

Use the WiFi Cable Data Gateway as a DHCP

Server

on page

48.

Starting IP Address

Specify the start of the range for the DHCP pool of IP addresses in the same

subnet as the cable data gateway. By default, the starting IP address is

192.168.0.2.

Ending IP Address

Specify the end of the range for the DHCP pool of IP addresses in the same

subnet as the cable data gateway. By default, the ending IP address is

192.168.0.254.

Address Reservation

A device with a reserved IP address on the LAN always receives the same IP

address when it accesses the cable data gateway’s DHCP server. Assign

reserved IP addresses to devices that require permanent IP settings.

For more information, see

Manage IP Address Reservation

on page

49.

7.

If you changed the settings, click the

Apply

button.

Your settings are saved and the cable data gateway might restart.

Use the WiFi Cable Data Gateway as a DHCP Server

By default, the cable data gateway functions as a DHCP server. The cable data gateway

assigns IP, DNS server, and default gateway addresses to all computers connected to the

LAN. The assigned default gateway address is the LAN address of the cable data gateway.

The cable data gateway assigns IP addresses to the attached computers from a pool of

addresses specified on the LAN Setup screen. Each pool address is tested before it is

assigned to avoid duplicate addresses on the LAN. For most applications, the default DHCP

and TCP/IP settings of the cable data gateway work well.

Note:

If you change the IP address, you first might need to disable the DHCP

server. After you change the IP address, you can reenable the DHCP server.

Manage Internet, WAN, and LAN Settings and Use the WPS Wizard

49

AC1900, N900, and N450 WiFi

Cable Data Gateways

The cable data gateway delivers the following parameters to any LAN device that requests

DHCP:

•

An IP address from the range that you defined

•

Subnet mask

•

Gateway IP address (the cable data gateway’s LAN IP address)

•

DNS server IP address (the cable data gateway’s LAN IP address)

You can specify the pool of IP addresses that the cable data gateway assigns by setting the

starting IP address and ending IP address. These addresses must be part of the same IP

address subnet as the cable data gateway’s LAN IP address. Using the default addressing

scheme, define a range between 192.168.0.2 and 192.168.0.254, although you might want to

save part of the range for devices with fixed addresses.



To specify the pool of IP addresses that the cable data gateway assigns:

1.

On your computer, launch an Internet browser such as Mozilla Firefox or Microsoft

Internet Explorer.

2.

In the address field of your browser, enter

http://routerlogin.net

.

You are prompted to enter a user name and password.

3.

Type

admin

for the user name and type your password.

If you did not yet personalize your password, type

password

for the password.

4.

Click the

OK

button.

The BASIC Home screen displays.

5.

Select

ADVANCED > Setup > LAN Setup

.

The LAN Setup screen displays.

6.

Make sure that the

Use Gateway as a DHCP Server

check box is selected.

7.

Specify the range of IP addresses:

•

Starting IP Address

. Specify the start of the range for the pool of IP addresses in the

same subnet as the cable data gateway.

•

Ending IP Address

. Specify the end of the range for the pool of IP addresses in the

same subnet as the cable data gateway.

For example, using the default addressing scheme, define a range between 192.168.0.2

and 192.168.0.254, although you might want to save part of the range for devices with

fixed addresses.

8.

Click the

Apply

button.

Your settings are saved and the cable data gateway might restart.

Manage IP Address Reservation

When you specify a reserved IP address for a device on the LAN, that computer always

receives the same IP address each time it accesses the cable data gateway’s DHCP server.

Manage Internet, WAN, and LAN Settings and Use the WPS Wizard

50

AC1900, N900, and N450 WiFi

Cable Data Gateways

Best practise is to assign a reserved IP address to a computer or server that requires

permanent IP settings.

Reserve an IP Address

You must know the IP address and MAC address of a device for which you want to reserve

an IP address.



To reserve an IP address:

1.

On your computer, launch an Internet browser such as Mozilla Firefox or Microsoft

Internet Explorer.

2.

In the address field of your browser, enter

http://routerlogin.net

.

You are prompted to enter a user name and password.

3.

Type

admin

for the user name and type your password.

If you did not yet personalize your password, type

password

for the password.

4.

Click the

OK

button.

The BASIC Home screen displays.

5.

Select

ADVANCED > Setup > LAN Setup

.

The LAN Setup screen displays.

6.

In the Address Reservation section, click the

Add

button.

The Address Reservation screen displays.

7.

In the

IP Address

field, type the IP address to assign to the device.

Choose an IP address from the cable data gateway’s LAN subnet, such as 192.168.0.x.