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Troubleshooting
131
CENTRIA WNDR4700/WNDR4720
If the error persists, you might have a hardware problem and should contact technical
support at
www.netgear.com/support.
HDD LED Is Red or Red and Green
•
If the HDD LED is solid green plus red, the internal hard disk drive (HDD) is 85% full.
•
If the HDD LED is blinking green and red, the HDD is 95% full.
•
If the HDD LED is solid red, the HDD is not formatted, the HDD connection is loose, or
there is a failure alert.
LEDs Never Turn Off
When the router is turned on, the LEDs turn on for about 10 seconds and then turn off. If all
the LEDs stay on, there is a fault within the router.
If all LEDs are still on 1 minute after power-up:
•
Cycle the power to see if the router recovers.
•
Press and hold the
Reset
button to return the router to its factory settings as explained in
Restore the Factory Settings and Password
on page
136.
If the error persists, you might have a hardware problem and should contact technical
support at
www.netgear.com/support
.
Internet LED Is Off
If the Internet LED does not light, check the following:
•
Make sure that the Ethernet cable connections are secure at the router and at the modem
or computer.
•
Make sure that power is turned on to the connected modem or computer.
•
Be sure that you are using the correct cable.
When connecting the router’s Internet port to a cable or DSL modem, use the cable that
was supplied with the cable or DSL modem. This cable could be a standard
straight-through Ethernet cable or an Ethernet crossover cable.
Wireless LED Is Off
If the Wireless LED stays off, check to see if the Wi-Fi On/Off button on the router has been
pressed. This button turns the wireless radios in the router on and off. The Wireless LEDs are
lit when the wireless radio is turned on.
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Troubleshooting
132
CENTRIA WNDR4700/WNDR4720
Cannot Log In to CENTRIA
If you are unable to log in to CENTRIA 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.
•
Make sure that 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 192.168.1.2 to 192.168.1.254.
•
If your computer’s IP address is shown as 169.254.x.x, recent versions of Windows and
Mac OS generate and assign an IP address if the computer cannot reach a DHCP server.
These autogenerated 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.
•
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 sets the router’s IP address to
192.168.1.1. This procedure is explained in
Factory Settings
on page
139.
•
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 that 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 you enter
this information.
•
If you are attempting to set up your NETGEAR router as a replacement for an ADSL
gateway in your network, the router cannot perform many gateway services. For
example, the router cannot convert ADSL or cable data into Ethernet networking
information. NETGEAR does not support such a configuration.
Cannot Access the Internet
If you can access CENTRIA but not the Internet, check to see if the router can obtain an IP
address from your Internet service provider (ISP). Unless your ISP provides a fixed IP
address, your router requests an IP address from the ISP. You can determine whether the
request was successful using the Router Status screen.
To check the WAN IP address:
1.
Start your browser, and select an external site such as
www.netgear.com
.
2.
Access the router interface at
www.routerlogin.net.
3.
Select
Administration > Router Status
.
4.
Check that an IP address is shown for the Internet port. If 0.0.0.0 is shown, your router has
not obtained an IP address from your ISP.
Page 133 / 146
Troubleshooting
133
CENTRIA WNDR4700/WNDR4720
If your router cannot obtain an IP address from the ISP, you might need to force your cable or
DSL modem to recognize your new router by restarting your network, as described in
Sequence to Restart Your Network
on page
129.
If your router is still unable to obtain an IP address from the ISP, the problem might be one of
the following:
•
Your Internet service provider (ISP) might require a login program.
Ask your ISP whether it requires PPP over Ethernet (PPPoE) or some other type of login.
•
If your ISP requires a login, the login name and password might be set incorrectly.
•
Your ISP might check for your computer’s host name.
Assign the computer host name of your ISP account as the account name in the Internet
Setup screen.
•
Your ISP allows only one Ethernet MAC address to connect to Internet and might check
for your computer’s MAC address. In this case, do one 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 clone your computer’s MAC address.
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. 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 gateway.
If your computer obtains its information from the router by DHCP, reboot the computer,
and verify the gateway address.
•
You might be running login software that is no longer needed.
If your ISP provided a program to log you in to the Internet (such as WinPoET), you no
longer need to run that software after installing your router. You might need to go to
Internet Explorer and select
Tools > Internet Options
, click the
Connections
tab, and
select
Never dial a connection
.
Page 134 / 146
Troubleshooting
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CENTRIA WNDR4700/WNDR4720
Troubleshoot PPPoE
If you are using PPPoE, try troubleshooting your Internet connection.
To troubleshoot a PPPoE connection:
1.
Log in to the router.
2.
Select
Administration > Router Status
.
3.
Click
Connection Status
. If all of the steps indicate OK, then your PPPoE connection is
up and working.
If any of the steps indicate Failed, you can attempt to reconnect by clicking
Connect
. The
router continues to attempt to connect indefinitely.
If you cannot connect after several minutes, you might be using an incorrect service name,
user name, or password. There might be a provisioning problem with your ISP.
Note:
Unless you connect manually, the router does not authenticate using
PPPoE until data is transmitted to the network.
Troubleshooting Internet Browsing
If your router can obtain an IP address but your computer is unable to load any web pages
from the Internet, check the following:
•
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, restart your computer.
Alternatively, you can configure your computer manually with a DNS address, as
explained in the documentation for your computer.
•
Your computer might not have the router configured as its default gateway.
Reboot the computer and verify that the router address (www.routerlogin.net) is listed by
your computer as the default gateway address.
•
You might be running log in software that is no longer needed. If your ISP provided a
program to log you in to the Internet (such as WinPoET), you no longer need to run that
software after installing your router. You might need to go to Internet Explorer and select
Tools > Internet Options
, click the
Connections
tab, and select
Never dial a
connection
.
Page 135 / 146
Troubleshooting
135
CENTRIA WNDR4700/WNDR4720
Changes Not Saved
If the router does not save the changes you make in the router interface, check the following:
•
When entering configuration settings, always 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 old settings might be in the web browser’s cache.
Wireless Connectivity
If you are having trouble connecting wirelessly to the router, try to isolate the problem.
•
Does the wireless device or computer that you are using find your wireless network?
If not, check the Wireless LEDs on the front of the router. It should be lit. If it is not, you
can press the
WiFi On/Off
button on the back of the router to turn the router’s wireless
radio back on.
If you disabled the router’s SSID broadcast, then your wireless network is hidden and
does not show up in your wireless client’s scanning list. By default, SSID broadcast is
enabled.
•
Does your wireless device support the security that you are using for your wireless
network (WPA or WPA2)?
•
If you want to view the wireless settings for the router, use an Ethernet cable to connect a
computer to a LAN port on the router. Then log in to the router, and select
Wireless
(see
(
Basic Wireless Settings
on page
33).
Note:
Be sure to click
Apply
to save your changes.
Wireless Signal Strength
If your wireless device finds your network, but the signal strength is weak, check these
conditions:
•
Is your router too far from your computer, or too close? Place your computer near the
router, but at least 6 feet (1.8 meters) away, and see whether the signal strength
improves.
•
Is your wireless signal blocked by objects between the router and your computer?

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