Troubleshooting

27

•

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 of the RJ-11 jack. The N150 Router uses

pins 2 and 3.

Obtaining an Internet IP Address

If your wireless modem router is unable to access the internet, and your Internet LED is red, you

should determine whether the wireless modem router is able to obtain a Internet IP address from

the ISP. Unless you have been assigned a static IP address, your wireless modem router must

request an IP address from the ISP. You can determine whether the request was successful using

the browser interface.

To check the Internet IP address from the browser interface:

1.

Launch your browser and select an external site such as

.

2.

Access the Main Menu of the wireless modem router’s configuration at

.

3.

Under Maintenance, select

Router Status

and check that an IP address is shown for the

Internet port. If 0.0.0.0 is shown, your wireless modem router has not obtained an IP address

from your ISP.

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

following:

•

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

Name and Password. See

“Troubleshooting PPPoE or PPPoA” on page 28

.

•

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

Assign the computer Host Name of your ISP account to the wireless modem router in the

browser-based Setup Wizard.

•

Your ISP only allows one Ethernet MAC address to connect to Internet, and may check for

your computer’s MAC address. In this case:

–

Inform your ISP that you have bought a new network device, and ask them to use the

router’s MAC address; or

–

Configure your router to spoof your computer’s MAC address. This can be done in the

Basic Settings menu. Refer to the online help in the wireless modem router main menu.

Troubleshooting

28

Troubleshooting PPPoE or PPPoA

The PPPoE or PPPoA connection can be debugged as follows:

1.

Access the main menu of the router at

.

2.

Under Maintenance, select

Router Status

.

3.

Click

Connection Status

.

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

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

Connect

. The

wireless modem router 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 wireless modem router can obtain an IP address but your computer is unable to load any

Web pages from the Internet:

•

Your computer 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 wireless modem router’s

configuration, reboot your computer and verify the DNS address as described in

“Preparing

Your Network” on page 34

. Alternatively, you can configure your computer manually with

DNS addresses, as explained in your operating system documentation

.

•

Your computer may not have the wireless ADSL modem router configured as its TCP/IP

default gateway.

If your computer obtains its information from the wireless modem router by DHCP, reboot the

computer and verify the wireless modem router address as described in

“Preparing Your

Network” on page 34

.

Unless you connect manually, the wireless modem router will not authenticate using

PPPoE or PPPoA until data is transmitted to the network.

Troubleshooting

29

Troubleshooting a TCP/IP Network Using the Ping

Utility

Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request packet

to the designated device. The device then responds with an echo reply. Troubleshooting a TCP/IP

network is made easy by using the ping utility in your computer.

Testing the LAN Path to Your Router

You can ping the router from your computer to verify that the LAN path to your router is set up

correctly.

To ping the router from a PC running Windows 95 or later:

1.

From the Windows toolbar, click the Start button and select Run.

2.

In the field provided, type Ping followed by the IP address of the router, as in this example:

ping 192.168.0.1

3.

Click

OK

.

You should see a message like this one:

Pinging

<IP address>

with 32 bytes of data

If the path is working, you see this message:

Reply from <

IP address

>: bytes=32 time=NN ms TTL=xxx

If the path is not working, you see this message:

Request timed out

If the path is not functioning correctly, you could have one of the following problems:

•

Wrong physical connections

–

Make sure the LAN port LED is on. If the LED is off, follow the instructions in

“LAN

or Internet Port LEDs Not On” on page 24

.

–

Check that the corresponding Link LEDs are on for your network interface card and

for the hub ports (if any) that are connected to your workstation and router.

•

Wrong network configuration

–

Verify that the Ethernet card driver software and TCP/IP software are both installed

and configured on your PC or workstation.

Troubleshooting

30

–

Verify that the IP address for your router and your workstation are correct and that the

addresses are on the same subnet.

Testing the Path from Your Computer to a Remote Device

After verifying that the LAN path works correctly, test the path from your PC to a remote device.

From the Windows run menu, type:

PING -n 10 <

IP address

>

where

<

IP address

>

is the IP address of a remote device such as your ISP’s DNS server.

If the path is functioning correctly, replies as in the previous section are displayed. If you do not

receive replies:

•

Check that your PC has the IP address of your router listed as the default gateway. If the IP

configuration of your PC is assigned by DHCP, this information will not be visible in your

PC’s Network Control Panel. Verify that the IP address of the router is listed as the TCP/IP

default gateway as described in

“Preparing Your Network” on page 34

.

•

Check to see that the network address of your PC (the portion of the IP address specified by

the netmask) is different from the network address of the remote device.

•

If your ISP assigned a host name to your PC, enter that host name as the Account Name in the

Basic Settings menu.

Restoring the Default Configuration and Password

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

router’s administration password to

password

and the IP address to

192.168.0.1

. You can erase

the current configuration and restore factory defaults by pressing the reset button on the bottom of

the router. Use this method for cases when the administration password or IP address is not known.

To restore the factory default configuration settings, press the reset button on the bottom of the

router following the steps below.

1.

Press and hold the reset button until the Power LED blinks red (about 6 seconds).

2.

Release the reset button and wait for the router to reboot.The Power LED will blink red three

times and then will turn green when the default configuration settings have been restored.

Technical Specifications

31

Technical Specifications

This appendix provides technical specifications for the wireless modem router.

General Specifications

Network Protocol and Standards Compatibility

Data and Routing Protocols:

TCP/IP, RIP-1, RIP-2, DHCP, PPPoE or PPPoA, RFC 1483 Bridged

or Routed Ethernet, and RFC 1577 Classical IP over ATM

Power Adapter

North America:

120V, 60 Hz, input

UK, Australia:

240V, 50 Hz, input

Europe:

230V, 50 Hz, input

All regions (output):

12 V AC @ 1.0A output

Physical

Dimensions:

6.80" x 5.03" x 1.28"

172.7 mm x 127.7 mm x 32.5 mm

Weight:

0.61 lbs.

0.275 kg

Environmental

Operating temperature:

0



to 40



C

(32º to 104º F)

Operating humidity:

10% to 90% relative humidity, noncondensing

Storage temperature:

-20



to 70



C

(-4º to 158º F)

Storage humidity:

5 to 95% relative humidity, noncondensing

Regulatory Compliance

Meets requirements of:

FCC Part 15 Class B; VCCI Class B; EN 55 022 (CISPR 22), Class B