By configuring the traffic meter not to block Internet access when the traffic limit is reached, you can resume
Internet access (see Unblock the Traffic Meter After the Traffic Limit Is Reached on page 245). If your ISP sets
a usage limit, they might charge you for the overage.
• 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 manually with DNS addresses, as explained in your operating
system documentation.
• The modem router might not be configured as the TCP/IP router on your computer.
For information about TCP/IP problems, see Troubleshoot Your Network Using the Ping Utility on page 285.
If your computer obtains its information from the modem router by DHCP, reboot the computer and verify the
modem router address.
Changes Are Not Saved
If the modem router does not save the changes that you make in a modem router web page, do the following:
• When entering configuration settings, always click the Apply button before moving to another page or tab or
your changes are lost.
• Click the Refresh or Reload button in the web browser. It is possible that the changes occurred but that the old
settings remain in the web browser’s cache.
Troubleshoot the WiFi Connectivity
If you are experiencing trouble connecting over WiFi to the modem router, try to isolate the problem:
• Make sure that the WiFi settings in your WiFi device and modem router match exactly.
For a device that is connected over WiFi, the WiFi network name (SSID) and WiFi security settings of the modem
router and WiFi computer must match exactly. The default SSID and password are on the product label (see
Bottom Panel Product Label on page 17).
• Does the WiFi device that you are using find your WiFi network?
If not, check the WiFi LED on the top of the modem router. If this LED is off, both WiFi radios might be
disabled. For more information about the WiFi radios, see Control the WiFi Radios on page 113.
• If you disabled the modem router’s SSID broadcast, your WiFi network is hidden and does not display in your
WiFi client’s scanning list. (By default, SSID broadcast is enabled.) For more information, see View or Change
the Basic WiFi Settings on page 95.
• Does your WiFi device support the security that you are using for your WiFi network (WEP, WPA, or WPA2)?
For information about changing the WiFi security, see View or Change the Basic WiFi Settings on page 95.
Diagnostics and Troubleshooting
284
Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000
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