ATU-R130 ADSL Ethernet Router User’s Guide

18

Follow these steps to commit changes to permanent storage.

1.

Click the Admin tab, and then click

Commit & Reboot

in the task bar.

The Commit & Reboot page displays:

Figure 12. Commit & Reboot Page

{

XE "Commit & Reboot page"

}{

XE "Pages:Commit & Reboot"

}

2.

Click

. (Disregard the selection in the Reboot Mode drop-down list; it

does not affect the commit process.)

The changes are saved to permanent storage.

The previous settings are copied to backup storage so that they can be recalled if your new

settings do not work properly (see

the rebooting instructions on page 18).

Rebooting the device using Configuration Manager

{

XE "Rebooting"

}

To reboot the device, display the Commit and Reboot page, select the

appropriate reboot mode from the drop-down menu, and then click

.

You can select from the following three options when rebooting:

Option

Description

Reboot from Last

Configuration

Reboots the device using the current settings in

permanent memory, including any changes you

just committed.

Reboot from Backup

Configuration

Reboots the device using settings stored in

backup memory. These are the settings that were

in effect before you committed new settings in the

current session.

Reboot from Default

Configuration

Reboots the device to default settings provided by

your ISP or the manufacturer. Choosing this

option erases any custom settings.

WARNING

Do not reboot the device using

the Reset button

{

XE "Reset

button"

}

on the back panel of the ATU-R130 to activate new

changes. This button resets the device settings to the

manufacturer’s default values. Any custom settings will be lost.

ATU-R130 ADSL Ethernet Router User’s Guide

19

5

Setting the LAN IP Address

{

XE "LAN IP address"

}

This chapter describes how to configure the interfaces on the

ADSL/Ethernet router that communicate with your LAN and USB computers.

Ethernet, USB, or Both?

If you are using the ADSL/Ethernet router with multiple PCs on your LAN, you must

connect the LAN via an Ethernet hub to the device's LAN port, called eth-0.

If you are using a single PC with the ADSL/Ethernet router, you have two options for

connecting it to the device:

?

You can connect the PC directly to the LAN port using a crossover Ethernet cable.

See Appendix A, “Troubleshooting“

for a description of crossover versus straight-

through Ethernet cables.

?

If the PC is

{

XE "USB port:configuring IP information"

}

USB-enabled, you can

connect it directly to the device's USB port, called usb-0. Only one computer can

be connected in this manner.

You can also use the USB and Ethernet ports simultaneously, connecting your LAN to the

Ethernet port and a standalone PC to the USB port.

You must assign a unique IP address to each device port that you use.

Note

The instructions that follow assume that the device has been

preconfigured to operate in Routing mode, which uses the IP

protocol to determine how to exchange data among your PCs, the

device, and your ISP. If your device is configured in Bridging

mode, its ports do not require IP addresses. The operating mode

displays at the top of the LAN Configuration page and cannot be

changed by the user.

Configuring the LAN IP Address

The LAN IP address identifies the LAN port (eth-0)

{

XE "LAN IP address:configuring"

}

as a

node on your network; that is, its IP address must be in the same subnet as the PCs on

your LAN.

Definition

{

XE "Node on network:defined"

}

A

network

node

can be thought

of as any interface where a device connects to the network, such

as the ATU-R130’s LAN port and the network interface cards on

your PCs.

You can change the default to reflect the set of IP addresses that you want to use with your

network.

If your network uses a local DHCP server

{

XE "DHCP server:using existing on LAN"

}

(other than the ADSL/Ethernet router) to assign IP addresses, you can configure the device

to accept and use a LAN IP address assigned by that server. In this mode, the

ADSL/Ethernet router is considered a

DHCP client

of your DHCP server.

The ATU-R130 itself can function as a DHCP server for your LAN

computers, as described in Chapter 5,

but not for its own LAN

ATU-R130 ADSL Ethernet Router User’s Guide

20

Note

port

.

Follow these steps to change the default LAN IP address or to configure the LAN port as a

DHCP client

{

XE "LAN IP address:specifying"

}

.

1.

Log into Configuration Manager, and then click the LAN tab.

The LAN Configuration page displays, as shown in Figure .

Figure 13. LAN Configuration Page

The LAN Configuration table displays the following settings:

Setting

Description

System Mode

The preconfigured mode for your device, such as

Routing or Bridging mode. This setting is not user -

configurable.

LAN IP

Address

{

XE

"

LAN IP

address

"

}

The IP address your computers use to identify the

device’s LAN port.

Note that the public IP address assigned to you by your

ISP

is not

your LAN IP address. The public IP address

identifies the WAN (ADSL) port on your ADSL/Ethernet

router to the Internet.

LAN Network

Mask

{

XE

"

LAN network

mask

"

}

The LAN Network mask

{

XE "LAN network mask"

}

identifies which parts of the LAN IP Address refer to

your network as a whole and which parts refer

specifically to nodes on the network.

Your device is preconfigured with a default network

mask of 255.255.255.0.

Use DHCP

{

XE "DHCP server:using existing on LAN"

}

When

checked, this setting instructs the device to accept LAN

IP information assigned dynamically from another

DHCP server already configured on your network. The

ATU-R130 cannot act as a DHCP server for its own

LAN port.

{

XE "LAN Configuration page"

}{

XE "Pages:LAN

Configuration"

}

2.

Enter a LAN IP address and network mask, or click the DHCP

Enable

radio

button.

?

Entering a fixed address:

If you are using routing services on you LAN

such as DHCP and NAT, you will want to assign a fixed LAN IP address and

mask. This ensures that your LAN computers have a fixed address that they

use to communicate with the device.

ATU-R130 ADSL Ethernet Router User’s Guide

21

The IP address you assign must be on the same subnet as your LAN

computers that connect to this port (that is, the network ID portion of their IP

addresses and their subnet masks must be the same).

You may need to update the DHCP configuration so that the addresses that

the DHCP server dynamically assigns to your computers are on the same

subnet as the new LAN IP address. See Chapter 6 for instructions on

changing the pool of dynamically assigned addresses. In addition, if you

change the DHCP pool, you will also need to update the NAT configuration

so the new IP addresses are translated properly. See Chapter 7 for

instructions on NAT.

?

Enabling DHCP:

If another computer on your LAN provides DHCP

{

XE

"DHCP client:configuring device as"

}

services for your network, you can

click the Use DHCP checkbox to enable the LAN port to accept a

dynamically assigned address from the server. Check with your ISP to

determine if this is advisable.

When you click the Enable radio button, the LAN Network Mask field will be

dimmed (made unavailable for entry). The LAN IP Address field will remain

editable, however. The address that you specify here will be used as a

requested IP address from the DHCP server. This is referred to as a

"Configured IP Address" in the program. If the configured IP address is not

available from the DHCP server, the server will distribute another address to

the LAN port. Even if another number is assigned, the same configured IP

address will continue to display in this field.

For a description of how DHCP works, see Chapter 6.

3.

Click

.

?

If you were using an Ethernet connection for the current session, and changed

the IP address, the connection will be terminated.

?

If you are currently using the USB interface, a page will display to confirm your

change and your connection will remain active.

?

If you enabled the DHCP service, the ADSL/Ethernet router will initiate a

request for an IP address from your LAN's DHCP server. Assuming a different

IP address is assigned, your current connection will be terminated.

4.

Reconfigure your PCs, if necessary, so that their IP addresses place them in the

same subnet as the new IP address of the LAN port.

5.

Log into Configuration Manager by typing the new IP address in your Web

browser’s address/location box.

If you enabled DHCP, you may need to check the DHCP server on your LAN to

determine the IP address actually assigned to the LAN port.

6.

If the new settings work properly click the Admin tab, and then click

Commit &

Reboot

in the task bar.

7.

Click

to save your changes to permanent memory.

Configuring the USB Port IP Address{ XE "USB port:configuring IP

information" }

1.

If the LAN Configuration page is not already displaying, click the LAN tab.

ATU-R130 ADSL Ethernet Router User’s Guide

22

2.

In the USB Configuration table, enter the IP Address and Network Mask for the

USB port.

The IP address must place the USB port in the same subnet as the USB computer; If

you are using both the LAN port and the USB port, however, the USB port and USB

computer must not be in the same subnet as the LAN port or the computers attached to

it.

For example, you could assign the following IP addresses to the LAN and USB ports

(both assume a network mask of 255.255.255.0):

Port IP Address

Computer(s) IP

Address(es)

LAN

192.168.1.1

192.168.1.x (x = 3-254)

USB

192.168.1.2

192.168.1.x

3.

Click

.

?

If you are currently communicating with the device via the USB interface, then

the connection will be terminated, because the IP address that the connection

was using has now changed.

?

If you are currently using the Ethernet interface, a page will display to confirm

your change and your connection will remain active.

4.

If necessary, reconfigure your USB PC so that its IP address places it in the same

subnet as the new IP address of the USB port.

5.

Log into Configuration Manager by typing the new USB port IP address in your

Web browser’s address/location box.

6.

If the new settings work properly click the Admin tab, and then click

Commit &

Reboot

in the task bar.

7.

Click

to save your changes to permanent memory.