Netgear N 900 Manual

Troubleshooting111
 N900 Wireless Dual Band Gigabit Router WNDR4500
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.
Tu
rn off and unplug the modem. 
2.T
urn off the router and computers.
3.Plug in the modem and turn it 
 on. Wait 2 minutes.
4. T
urn on the router and wait 2 minutes.
5.T
urn on the computers.
Check Ethernet Cable Connections
Make sure that the Ethernet cables are securely...

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N900 Wireless Dual Band Gigabit Router WNDR4500 
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 on.
2. Verify that the Power/Test LED turns amber within a few seconds, indicating that the self-test 
is runnin
 g.
3. After approximately 30 seconds, verify that:
• The Power/ T
 est LED is solid green.
• The  Internet LED is on.
• A numbered Eth ernet...

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 N900 Wireless Dual Band Gigabit Router WNDR4500
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.
•Pre
ss and hold the Reset  button to return the router to its factory settings as explained in 
Restore the Factory Settings and Password  on p
 age 11 7 .
If the error...

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N900 Wireless Dual Band Gigabit Router WNDR4500 
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 addressi ng scheme, your...

Troubleshooting11 5
 N900 Wireless Dual Band Gigabit Router WNDR4500
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.
If your router cannot obtain an IP address from the ISP, you might need to force your cable or 
DSL modem to re
 cognize your new router by restarting your network, as described in 
Sequence to Restart Your Network  on p
 age 111 .
If your router is still unable to obtain an IP  a
 ddress from the...

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N900 Wireless Dual Band Gigabit Router WNDR4500 
Troubleshooting PPPoE
If you are using PPPoE, try troublesho
oting your Internet connection.
To troubleshoot a PPPoE connection:
1.Log in to the ro
 uter.
2. Select  Ad
 ministration > Router Status .
3. Click  Connecti
 on 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...

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 N900 Wireless Dual Band Gigabit Router WNDR4500
Changes Not Saved
If the router does not save the changes you make in the router interface, check the following:
•
W
hen 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  butto
 n 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...

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N900 Wireless Dual Band Gigabit Router WNDR4500 
•
Use the Reset button on the back of the router. See  Factory Settings on  page 120. If you 
restore the factory settings and the router fails to restart, or the green Power/Test LED 
con
 tinues to blink, the unit might be defective. If the error persists, you might have a 
hardware problem and should contact technical support at 
http://www.netgear.com/support .
Troubleshoot Your Network Using the Ping Utility
Most network devices...

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 N900 Wireless Dual Band Gigabit Router WNDR4500
Verify that the IP address for your router and your computer are correct and that the 
addresses are on the same subnet.
Test the Path from Your Co
mputer to a Remote Device
After verifying that the LAN path works correctly, test the path from your computer to a remote 
device.
1.F
rom the Windows toolbar, click the  Start button, and then select  Run.
2. I
n the Windows Run window, type:
ping -n 10  
where  is the IP address of a...

120
A
A.   Supplemental Information
This appendix provides factory default settings and technical specifications for the N900 
Wireless Dual Band  Gigabit Router WNDR4500.
Factory Settings
You can return the router to its factory settings. Use the end of a paper clip or some other 
similar object to press and hold the  Reset  button on the back of the router for at least 7 
seconds. The router resets, and returns to the factory configuration settings shown in the 
following table.
Table 4.  Factory...