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Page 96 / 106 Scroll up to view Page 91 - 95
3G Broadband Wireless Router MBR624GU User Manual
6-2
Troubleshooting
v1.1, March 2009
If any of these conditions does not occur, refer to the following table.
Troubleshooting Access to the Router Main Menu
If you are unable to access the router main menu from a computer on your local network, check the
following:
•
If you are using an Ethernet-connected computer, check the Ethernet connection between the
computer and the router as described in the previous section.
Table 6-1.
Troubleshooting with the LEDs
LED
Action
Power LED is off.
•
Make sure that the power cord is properly connected to your router
and that the power supply adapter is properly connected to a
functioning power outlet.
•
Check that you are using the power adapter supplied by NETGEAR
for this product.
•
If the error persists, you have a hardware problem and should contact
technical support.
Power LED is red
There is a fault within the router. Try to clear the fault as follows:
•
Cycle the power to see if the router recovers.
•
Clear the router’s configuration to factory defaults. This sets the
router’s IP address to 192.168.0.1. This procedure is explained in
“Restoring the Default Configuration and Password” on page 6-7
.
If the error persists, you might have a hardware problem and should
contact technical support.
Internet LED is red.
The router cannot connect to the Internet.
•
Make sure the USB LED is lit, indicating that the wireless modem is
securely connected to the router.
•
Your wireless modem must be activated and there must be coverage
in your area. To test coverage, connect your modem to your PC, and
try to connect to the Internet directly from your computer.
•
Check the NETGEAR website to ensure that your wireless modem is
supported.
•
Close the 3G Connection manager if it is running on your PC.
LAN LEDs are off.
If these LEDs do not light when the Ethernet connection is made, check
the following:
•
Make sure that the Ethernet cable connections are secure at the
router and at the hub or workstation.
•
Make sure that power is turned on to the connected hub or
workstation.
Page 97 / 106
3G Broadband Wireless Router MBR624GU User Manual
Troubleshooting
6-3
v1.1, March 2009
•
Make sure your computer’s IP address is on the same subnet as the router. If you are using the
recommended addressing scheme, your computer’s address should be in the range of
192.168.0.2 to 192.168.0.254. See the online document listed in
“Preparing a Computer for
Network Access” in Appendix B
to find your computer’s IP address.
•
If your router’s IP address was changed and you do not know the current IP address, clear the
router’s configuration to factory defaults. This will set the router’s IP address to 192.168.0.1.
This procedure is explained in
“Restoring the Default Configuration and Password” on
page 6-7
.
•
Make sure that your browser has Java, JavaScript, or ActiveX enabled. If you are using
Internet Explorer, click
Refresh
to be sure that 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 router 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 screen or tab, or your changes are lost.
•
Click the
Refresh
or
Reload
button in the Web browser. The changes might have occurred,
but the Web browser might be caching the old configuration.
Note:
If your computer’s IP address is shown as 169.254.x.x:
Recent versions of Windows and MacOS 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 computer to the router, and reboot your computer.
Page 98 / 106
3G Broadband Wireless Router MBR624GU User Manual
6-4
Troubleshooting
v1.1, March 2009
Troubleshooting the ISP Connection
Obtaining a WAN IP Address
If your router is unable to access the Internet, and your Internet LED is green or blinking green,
determine whether the router is able to obtain a WAN IP address from the ISP. Unless you have
been assigned a static IP address, your router 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:
1.
Launch your browser, and select an external site such as www.netgear.com.
2.
Access the router main menu at
.
3.
Under the Maintenance heading, check that an IP address is shown for the WAN port.
If 0.0.0.0 is shown, your 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 might be one of the
following:
•
Your ISP might require a multiplexing method or virtual path identifier or virtual channel
identifier parameter.
Verify with your ISP the multiplexing method and parameter value, and update the router’s
ADSL settings accordingly.
•
Your ISP might 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, the service name, user name, and password might be set
incorrectly. See
“Troubleshooting PPPoE or PPPoA”
, below.
•
Your ISP might check for your computer’s host name.
Assign the computer host name of your ISP account to the router in the browser-based Setup
Wizard.
•
Your ISP only allows one Ethernet MAC address to connect to Internet, and might check for
your computer’s MAC address. In this case try either of the following:
–
Inform your ISP that you have bought a new network device, and ask them to use the
router’s MAC address.
–
Configure your router to spoof your computer’s MAC address. This can be done in the
Basic Settings screen.
Page 99 / 106
3G Broadband Wireless Router MBR624GU User Manual
Troubleshooting
6-5
v1.1, March 2009
Troubleshooting PPPoE or PPPoA
The PPPoA or PPPoA connection can be debugged as follows:
1.
Access the main menu of the router at
.
2.
Under the Maintenance heading, select Router Status.
3.
Click
Connection Status
.
4.
If all of the steps indicate OK, then your PPPoE or PPPoA connection is up and working.
5.
If any of the steps indicates Failed, you can attempt to reconnect by clicking
Connect
. The
router will continue to attempt to connect indefinitely.
If you cannot connect after several minutes, the service name, user name, or password might be
incorrect. There also might be a provisioning problem with your ISP.
Troubleshooting Internet Browsing
If your router can obtain an IP address but your computer is unable to load any Web pages from the
Internet:
•
Your computer might 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 provides the addresses of one or two DNS servers
for your use. If you entered a DNS address during the router’s configuration, reboot your
computer and verify the DNS address as described in
“Preparing a Computer for Network
Access” in Appendix B
. Alternatively, you can configure your computer manually with DNS
addresses, as explained in your operating system documentation
.
•
Your computer might not have the router configured as its TCP/IP router.
If your computer obtains its information from the router by DHCP, reboot the computer, and
verify the router address as described in the link to the online document
“Preparing a
Computer for Network Access” in Appendix B
.
Note: Unless you connect manually, the router will not authenticate using PPPoE or
PPPoA until data is transmitted to the network.
Page 100 / 106
3G Broadband Wireless Router MBR624GU User Manual
6-6
Troubleshooting
v1.1, March 2009
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 very easy by using the ping utility in your computer.
Testing the LAN Path to Your Router
You can ping the router from your PC 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 working correctly, you could have one of the following problems:
•
Wrong physical connections
–
Make sure that the LAN port LED is on. If the LED is off, follow the instructions in
Table 6-1 on page 6-2
.
–
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.
–
Verify that the IP address for your router and your workstation are correct and that the
addresses are on the same subnet.

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