Netgear D6400 Ac1600 Wifi Vdsl Adsl Modem Router 802 11ac Dual Band Gigabit User Manual

Manage Port Forwarding and Port Triggering 
271  AC1600 WiFi VDSL/ADSL Modem Router Model D6400
from its session table, and incoming traffic is no longer accepted on port numbers 33333 or 
113. 

272
15
15.   Troubleshooting
This chapter provides information to help you diagnose and solve problems you might 
experience with your modem router. If you do not find the solution here, check the NETGEAR 
support site at 
support.netgear.com for product and contact information.
This chapter contains the following sections:
•Quick Tips for Troubleshooting
•Troubleshoot with the LEDs
•You Cannot Log In to the Modem Router
•Troubleshoot the Internet Connection
•Changes Are Not Saved
•Troubleshoot the WiFi...

Troubleshooting 
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Quick Tips for Troubleshooting
The following table includes tips for troubleshooting some common problems. 
Table 4.  Quick tips for troubleshooting
ProblemPossible Solution
Your network is unresponsive 
or does not function normally.Restart your network:
1.Turn off and unplug the DSL, cable, or fiber modem.
2.Turn off the modem router.
3.Plug in the DSL, cable, or fiber modem and turn it on. Wait two minutes.
4.Turn on the modem router...

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AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
Troubleshoot with the LEDs
When you turn on the power, the LEDs light as described here.
1. 
When power is first applied, the Power LED lights solid amber 
.
2.  After about 50 seconds, the following occurs:
• The Power LED lights solid green 
, indicating that the startup procedure finished.
• The WiFi LED lights solid blue 
, indicating the WiFi network is available.
3.  After approximately one minute, the DSL LED 
 blinks green  to...

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 AC1600 WiFi VDSL/ADSL Modem Router Model D6400
If the error persists, a hardware problem might exist. For recovery inst\
ructions or help with a 
hardware problem, contact technical support at netgear.com/support
.
Power LED Is Off
If the Power LED  and other LEDs remain off when you turn on the modem router, do the 
following:
• Check that the Power  On/Off button on the back is in the on position, that is, it is pushed 
in.
• Check that the power cord is correctly connected to your...

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AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
•
Make sure that Java, JavaScript, or ActiveX is enabled in your browser. If you are using 
Internet Explorer, click the Refresh  button to be sure that the Java applet is loaded.
• T
ry quitting the browser and launching it again.
• Make sure that you are using the correct login information. 
 The user name is admin, and 
the default password is password . Make sure that Caps Lock is off when you enter this 
information.
• If you are...

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 AC1600 WiFi VDSL/ADSL Modem Router Model D6400
If disconnecting telephones does not result in a green DSL LED, check th\
e following:
•
Check that the telephone company made the connection to your line and te\
sted it.
• V
erify that you are connected to the correct telephone line. If more than\
 one phone line is 
installed, be sure that you are connected to the line with the ADSL or VDSL service. It 
might be necessary to use a swapper if your ADSL or VDSL signal is on pins 1 and 4...

Troubleshooting 
278 AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
If your modem router cannot 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 they require PPP over Ethernet (PPPoE) or some other type of 
login. 
•If you selected a login program, the service name, user name, or password might be 
incorrectly set. 
 
For more information, see Troubleshoot PPPoE or PPPoA on page...

Troubleshooting 
279  AC1600 WiFi VDSL/ADSL Modem Router Model D6400
6. In the Internet Port pane, check that the IP Address field shows a valid IP address and that 
the Connection field shows PPPoE or PPPoA.
7. In the Internet Port pane, click the Connection Status button.
The Connection Status pop-up window displays.
8. Check the following:
•The Connection Status field shows Connected.
•The Connection Time field does not show 00:00:00.
If all of the information is correct, your PPPoE or PPPoA...

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AC1600 WiFi VDSL/ADSL Modem Router Model D6400 
•
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 when you set \
up the modem 
router, reboot your computer and verify the DNS address. 

Alternatively, you can configure 
your computer...