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Page 31 / 39 Scroll up to view Page 26 - 30
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.
Page 32 / 39
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.
Page 33 / 39
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:
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.
Page 34 / 39
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.
Page 35 / 39
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

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