Reference Manual for the Model DM602 ADSL Modem

Advanced Configuration of the Modem

5-11

In Router Device Mode, the modem provides limited router functionality which allows you to

have the modem perform any logon steps your ISP may require. In this mode, it is also easier to

configure your computer by taking advantage of the automatic configuration capabilities of DHCP

which the router provides.

The Device Mode menu, shown in

Figure 5-10

, allows the configuration of modem in router mode

or modem mode.

Figure 5-10.

Device Mode menu.

To change the mode of the modem, follow these steps:

1.

Select the Device Type from the list.

2.

Click Apply.The modem will reconfigure itself accordingly.

Note:

If you change the modem from Router Mode to Modem Mode, your computer

must configured with a static IP address of 192.168.0.2-192.168.0.253, a Subnet Mask

of 255.255.255.0, and a Gateway Address of 192.168.0.1 to be able to connect to the

modem’s built-in configuration pages.

Reference Manual for the Model DM602 ADSL Modem

5-12

Advanced Configuration of the Modem

Troubleshooting

6-1

Chapter 6

Troubleshooting

This chapter gives information about troubleshooting your Model DM602 ADSL Modem . After

each problem description, instructions are provided to help you diagnose and solve the problem.

Basic Functioning

After you turn on power to the modem, the following sequence of events should occur:

1.

When power is first applied, verify that the Power LED

is on.

2.

After approximately 10 seconds, verify that the LAN port LEDs are lit for any local ports that

are connected.

If a port’s LED is lit, a link has been established to the connected device. If a LAN port is

connected to a 100 Mbps device, verify that the port’s LED is green. If the port is 10 Mbps, the

LED will be amber.

If any of these conditions does not occur, refer to the appropriate following section.

PWR LED Not On

If the PWR and other LEDs are off when your modem is turned on:

•

Make sure that the power cord is properly connected to your modem and that the power supply

adapter is properly connected to a functioning power outlet.

•

Check that you are using the 15 V AC power adapter supplied by NETGEAR for this product.

If the error persists, you have a hardware problem and should contact technical support.

Reference Manual for the Model DM602 ADSL Modem

6-2

Troubleshooting

Troubleshooting the Modem’s Web Configuration Interface

If you are unable to access the modem’s Web Configuration interface from a PC, check the

following:

•

Check the Ethernet connection between your PC and the modem as described in the previous

section.

•

Make sure your PC’s IP address is on the same subnet as the modem. If you are using the

recommended addressing scheme, your PC’s address should be 192.168.0.2. Refer to

“Verifying TCP/IP Properties (Windows)“ on page 3-5

or

“Verifying TCP/IP Properties for

Macintosh Computers“ on page 3-8

to find your PC’s IP address. Follow the instructions in

Chapter 3

to configure your PC.

Note:

If your PC’s IP address is shown as 169.254.x.x:

Recent versions of Windows and MacOS will generate and assign an IP address if the

computer cannot reach a DHCP server. These auto-generated addresses are in the range of

169.254.x.x. If your IP address is in this range, check the connection from the PC to the

modem and reboot your PC.

•

The modem’s default configuration is set to be in Router Device Mode. If it gets reset to

Modem Device Mode, your PC will need to be configured with a static IP address of

192.168.0.2, a Subnet Mask of 255.255.255.0, and a Gateway Address of 192.168.0.1 to be

able to connect to the modem’s built-in configuration pages. Otherwise, you can use the reset

button at the back of the modem to put it back in Router Device mode, and connect from a

computer set to automatically get it’s TCP/IP settings via the DHCP server in the mode.

•

Make sure your browser has Java, JavaScript, or ActiveX enabled. If you are using Internet

Explorer, click Refresh to be sure the Java applet is loaded.

•

Try quitting the browser and launching it again.

•

Make sure you are using the correct login information. The factory default login name is

admin

and the password is

password

. Make sure that CAPS LOCK is off when entering this

information.

If the modem does not save changes you have made in the Web Configuration Interface, check the

following:

•

When entering configuration settings, be sure to click the APPLY button before moving to

another menu or tab, or your changes are lost.

•

Click the Refresh or Reload button in the Web browser. The changes may have occurred, but

the Web browser may be caching the old configuration.

Reference Manual for the Model DM602 ADSL Modem

Troubleshooting

6-3

Troubleshooting the ISP Connection

ADSL link

If your modem is unable to access the Internet, you should first determine whether you have an

ADSL link with the service provider. The state of this connection is indicated with the WAN LED.

WAN LED Green or Blinking Green

If your WAN LED is green or blinking green, then you have a good ADSL connection. You can be

confident that the service provider has connected you line correctly and that your wiring is correct.

WAN LED Blinking Yellow

If your WAN LED is blinking yellow then your modem is attempting to make an ADSL

connection with the service provider. The LED should turn green within several minutes.

If the WAN LED does not turn green, disconnect all telephones on the line. If this solves the

problem, reconnect the telephones one at a time, being careful to use a microfilter on each

telephone. If the microfilters are connected correctly, you should be able to connect all your

telephones.

If disconnecting telephones does not result in a green WAN LED there may be a problem with

your wiring. If the telephone company has tested the ADSL signal at your Network Interface

Device (NID), then you may have poor quality wiring in your house.

WAN LED Off

If the WAN LED is off, disconnect all telephones on the line. If this solves the problem, reconnect

the telephones one at a time, being careful to use a microfilter on each telephone. If the microfilters

are connected correctly, you should be able to connect all your telephones.

If disconnecting telephones does not result in a green WAN LED the problem may be one of the

following:

•

Check that the telephone company has made the connection to your line and tested it.

•

Verify that you are connected to the correct telephone line. If you have more than one phone

line, be sure that you are connected to the line with the ADSL service. It may be necessary to

use a swapper if you ADSL signal is on pins 1 and 4 or the RJ-11 jack. The Model DM602

modem uses pins 2 and 3.