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Page 26 / 74 Scroll up to view Page 21 - 25
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.
Page 27 / 74
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
Page 28 / 74
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.
Page 29 / 74
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.
Page 30 / 74
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.

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