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106
10
10.
Troubleshooting
This chapter provides information to help you diagnose and solve problems you might have with
your router. If you do not find the solution here, visit the NETGEAR support site at
for product and contact information.
This chapter contains the following sections:
•
Quick Tips
•
Troubleshooting with the LEDs
•
Cannot Log In to the Router
•
Cannot Access the Internet
•
Changes Not Saved
•
Wireless Connectivity
•
Restore the Factory Settings and Password
•
Troubleshoot Your Network Using the Ping Utility
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Troubleshooting
107
N900 Wireless Dual Band Gigabit Router R4500
Quick Tips
This section describes tips for troubleshooting some common problems.
Sequence to Restart Your Network
Be sure to restart your network in this sequence:
1.
Turn off
and
unplug the modem.
2.
Turn off the router and computers.
3.
Plug in the modem and turn it on. Wait 2 minutes.
4.
Turn on the router and wait 2 minutes.
5.
Turn on the computers.
Check Ethernet Cable Connections
Make sure that the Ethernet cables are securely plugged in:
•
The Internet LED on the router is on if the Ethernet cable connecting the router and the
modem is plugged in securely and the modem and router are turned on.
•
For each powered-on computer connected to the router by an Ethernet cable, the
corresponding numbered router LAN port LED is on.
Wireless Settings
Make sure that the wireless settings in the computer and router match exactly.
•
For a wirelessly connected computer, the wireless network name (SSID) and wireless
security settings of the router and wireless computer need to match exactly.
•
If you set up an access list in the Advanced Wireless Settings screen, you have to add
each wireless computer’s MAC address to the router’s access list.
Network Settings
Make sure that the network settings of the computer are correct:
•
Wired and wirelessly connected computers need to have network (IP) addresses on the
same network as the router. The simplest way to do this is to configure each computer to
obtain an IP address automatically using DHCP.
•
Some cable modem service providers require you to use the MAC address of the
computer initially registered on the account. You can view the MAC address in the
Attached Devices screen.
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Troubleshooting
108
N900 Wireless Dual Band Gigabit Router R4500
Troubleshooting with the LEDs
After you turn on power to the router, the following sequence of events should occur:
1.
When power is first applied, verify that the Power/Test LED
is lit.
2.
Verify that the Power/Test LED turns amber within a few seconds, indicating that the self-test
is running.
3.
After approximately 30 seconds, verify the following:
•
The Power/Test LED is solid green.
•
The Internet LED is lit.
•
A numbered Ethernet port LED is lit for any local port that is connected to a computer.
This indicates that a link has been established to the connected device.
The LEDs on the front panel of the router can be used for troubleshooting.
Power/Test LED Is Off or Blinking
•
Make sure that the power cord is securely connected to your router and that the power
adapter is securely connected to a functioning power outlet.
•
Make sure that you are using the power adapter that NETGEAR supplied for this product.
•
If the Power/Test LED blinks slowly and continuously, the router firmware is corrupted.
This can happen if a firmware upgrade is interrupted, or if the router detects a problem
with the firmware. If the error persists, you have a hardware problem. For recovery
instructions or help with a hardware problem, contact technical support at
www.netgear.com/support.
Power/Test LED Stays Amber
When the router is turned on, the Power/Test LED turns amber for about 20 seconds and
then turns green. If the LED does not turn green, the router has a problem.
If the Power/Test LED is still amber 1 minute after you turn on power to the router:
1.
Turn off the power and then turn it back on to see if the router recovers.
2.
Press and hold the
Reset
button to return the router to its factory settings.
For more information, see
Restore the Factory Settings and Password
on page 114.
If the error persists, you might have a hardware problem and should contact technical support
at
www.netgear.com/support.
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N900 Wireless Dual Band Gigabit Router R4500
LEDs Never Turn Off
When the router is turned on, the LEDs light 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 lit 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.
For more information, see
Restore the Factory Settings and Password
on page 114.
If the error persists, you might have a hardware problem and should contact technical
support at
www.netgear.com/support
.
Internet or Ethernet Port LEDs Are Off
If the Internet LED or the Ethernet port 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 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 can be a standard
straight-through Ethernet cable or an Ethernet crossover cable.
Wireless LEDs Are Off
If the Wireless LEDs stay off, check to see if the WiFi 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.
The Push 'N' Connect (WPS) Button Blinks Amber
If after you use the WPS function the button blinks amber, check the following:
•
Make sure that you are using the button and not the router’s built-in registrar.
•
Check that PIN verification succeeded for the wireless device that you are adding to the
wireless network.
•
Make sure that you have not pressed the WPS button on the router after disabling the
WPS feature (you logged in to the router and disabled this previously).
•
Check that the router is not in the temporary AP setup locked state (if you are using the
wireless repeater function).
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N900 Wireless Dual Band Gigabit Router R4500
Cannot Log In to the Router
If you are unable to log in to the router 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. For more information, see
Factory Settings
on page 117.
•
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 an additional router behind an
existing router in your network, consider replacing the existing router instead. NETGEAR
does not support such a configuration.
•
If you are trying to set up your NETGEAR router as a replacement for an ADSL gateway
in your network, the router cannot perform some 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 your router but you are unable to access the Internet, first determine
whether 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 navigate to an external site such as www.netgear.com.
2.
Access the router interface at
www.routerlogin.net.
3.
Select
Administration > Router Status
.

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