Reference Manual for the Model DM602 ADSL Modem

6-4

Troubleshooting

Obtaining a WAN IP Address

If your modem is unable to access the internet, and your WAN LED is green or blinking green, you

should determine whether the modem is able to obtain a WAN IP address from the ISP. Unless you

have been assigned a static IP address, your modem must request an IP address from the ISP. You

can determine whether the request was successful using the browser interface.

To check the WAN IP address from the browser interface:

1.

Launch your browser and select an external site such as www.netgear.com

2.

Access the Main Menu of the modem’s configuration at http://192.168.0.1

3.

Under the Maintenance heading check that an IP address is shown for the WAN Port

If 0.0.0.0 is shown, your modem has not obtained an IP address from your ISP.

If your modem is unable to obtain an IP address from the ISP, the problem may be one of the

following:

•

Your ISP may require a login program.

Ask your ISP whether they require PPP over Ethernet (PPPoE) or PPP over ATM (PPPOA)

login.

•

If you have selected a login program, you may have incorrectly set the Service Name, User

Name and Password. See

“Troubleshooting PPPoE or PPPoA

”, below.

•

Your ISP may check for your PC's host name.

Assign the PC Host Name of your ISP account to the modem in the browser-based Setup

Wizard.

•

Your ISP only allows one MAC address to connect to Internet, and may check for your PC’s

MAC address. In this case, inform your ISP that you have bought a new network device, and

ask them to use the modem’s MAC address.

Troubleshooting PPPoE or PPPoA

The PPPoA or PPPoA connection can be debugged as follows:

1.

Access the Main Menu of the modems configuration at http://192.168.0.1.

2.

Under the Maintenance heading, click the “Show PPPoE Status” or “Show PPPoA Status”

button, depending on your connection type.

3.

If all of the steps indicate “OK” then your PPPoE or PPPoA connection is up and working.

Reference Manual for the Model DM602 ADSL Modem

Troubleshooting

6-5

4.

If any of the steps indicates “Failed”, you can attempt to reconnect by clicking “Connect”. The

modem will continue to attempt to connect indefinitely.

If you cannot connect after several minutes, you may be using an incorrect Service Name, User

Name or Password. There also may be a provisioning problem with your ISP.

Troubleshooting Internet Browsing

If your modem can obtain an IP address but your PC is unable to load any web pages from the

Internet:

•

Your PC may not recognize any DNS server addresses.

A DNS server is a host on the Internet that translates Internet names (such as www addresses)

to numeric IP addresses. Typically your ISP will provide the addresses of one or two DNS

servers for your use. If you entered a DNS address during the modem’s configuration, reboot

your PC and verify the DNS address as described in

“Verifying TCP/IP Properties (Windows)“

on page 3-5

. Alternatively, you may configure your PC manually with DNS addresses, as

explained in your operating system documentation

.

•

Your PC may not have the modem configured as its TCP/IP gateway.

If your PC obtains its information from the modem by DHCP, reboot the PC and verify the

gateway address as described in

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

.

Restoring the Default Configuration and Password

This section explains how to restore the factory default configuration settings, changing the

modem’s administration password to

password

and the IP address to 192.168.0.1. You can erase

the current configuration and restore factory defaults in two ways:

•

Use the Default Reset button on the rear panel of the modem. Use this method for cases when

the administration password or IP address is not known.

Using the Default Reset button

To restore the factory default configuration settings without knowing the administration password

or IP address, you must use the Default Reset button on the rear panel of the modem.

1.

Quickly press the Default Reset button three times.

2.

The Test LED to turns on (about 10 seconds). Wait for the modem to reboot.

Reference Manual for the Model DM602 ADSL Modem

6-6

Troubleshooting

Technical Specifications

A-1

Appendix A

Technical Specifications

This appendix provides technical specifications for the Model DM602 ADSL Modem .

General Specifications

Network Protocol and Standards Compatibility

Data and Routing Protocols:

TCP/IP

DHCP server and DHCP relay

RFC 1483, 2684 Bridged Ethernet Encapsulation

RFC 2516 PPP over Ethernet (PPPoE)

RFC 2364 PPP over ATM (PPPoA)

Power Adapter

North America:

120V, 60 Hz, input

United Kingdom, Australia:

240V, 50 Hz, input

Europe:

230V, 50 Hz, input

Japan:

100V, 50/60 Hz, input

All regions (output):

15 V AC @ 1.0 A output, 30W maximum

Reference Manual for the Model DM602 ADSL Modem

A-2

Technical Specifications

Physical Specifications

Dimensions:

174 by 118 by 28 mm

6.9 by 4.6 by 1.1 in.

Weight:

0.29 kg

0.63 lb.

Environmental Specifications

Operating temperature:

0

°

to 40

°

C

Operating humidity:

90% maximum relative humidity, noncondensing

Electromagnetic Emissions

Meets requirements of:

FCC Part 15 Class B

VCCI Class B

EN 55 022 (CISPR 22), Class B

Interface Specifications

LAN:

10BASE-T or 100BASE-Tx, RJ-45, USB 1.1

WAN:

ADSL, RJ-11, pins 2 and 3

T1.413, G.DMT, G.Lite

ITU Annex A