You Cannot Log In to the Modem Router
If you are unable to log in to the modem router from a computer on your local network and use the modem router
web pages, check the following:
• If you are using an Ethernet-connected computer, check the Ethernet connection between the computer and
the modem router.
• Make sure that the IP address of your computer is on the same subnet as the modem router. If you are using
the recommended addressing scheme, your computer’s address is in the range of 192.168.0.2 to 192.168.0.254.
• Make sure that your computer can reach the modem router’s DHCP server. 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 modem router and reboot your computer.
• If your modem router’s IP address was changed and you do not know the current IP address, use an IP scanner
application to detect the IP address. If you still cannot find the IP address, clear the modem router’s configuration
to factory defaults.This sets the modem router’s IP address to 192.168.0.1. For more information, see Return
the Modem Router to Its Factory Default Settings on page 223 and Factory Settings on page 289.
• 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.
• Try 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 attempting to set up your modem router behind an existing router in your network, set up the modem
router as a WiFi access point (see Use the Modem Router as a WiFi Access Point on page 119).
Troubleshoot the Internet Connection
If your modem router cannot access the Internet, check the DSL connection, then the WAN TCP/IP connection.
Troubleshoot the DSL Link
If your modem router is unable to access the Internet, first determine whether the DSL link with the service provider
is working. The DSL LED indicates the state of this connection.
DSL LED Is Solid White
If the DSL link LED lights solid white , the DSL connection is good.You can be confident that the service provider
connected your line correctly and that your wiring is correct.
DSL LED Is Blinking White
If the DSL LED is blinking white , your modem router is attempting to make a DSL connection with the service
provider. If the modem router establishes a DSL connection, the DSL LED turns solid white.This connection process
generally lasts several minutes.
Diagnostics and Troubleshooting
279
Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000
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