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• Manually Set Up an ADSL Internet Connection on page 50
• Manually Set Up a VDSL Internet Connection on page 59
• Manually Set Up a Cable or Fiber Internet Connection on page 68
4. Check to see if your ISP is experiencing a problem—it might not be that the modem router cannot connect to
the Internet, but rather that your ISP cannot provide an Internet connection.
Obtain an Internet IP Address
If the modem router cannot access the Internet but the DSL/Internet LED lights solid white, see if the modem
router can obtain an Internet IP address from the ISP. Unless the modem router is assigned a static IP address, the
modem router requests an IP address from the ISP.You can determine whether the request was successful using
the modem router web pages.
To check the Internet IP address:
1. Launch a web browser from a computer or WiFi device that is connected to the network.
2. Enter http://www.routerlogin.net.
A login window opens.
3. Enter the modem router user name and password.
The user name is admin.The default password is password. The user name and password are case-sensitive.
The BASIC Home page displays.
4. Select ADVANCED > ADVANCED Home.
The ADVANCED Home page displays.
5. In the Internet Port pane, check to see that the IP Address field shows a valid IP address.
If the field shows 0.0.0.0, your modem router did not obtain an IP address from your ISP.
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 could be incorrectly set. Before you
make any changes, verify that the modem router can get a PPPoE, PPPoA, PPTP, or L2TP connection (see
Verify the PPPoE, PPPoA, PPTP, or L2TP Connection on page 289).
• Your ISP might check for your computer’s host name. Assign the computer host name of your ISP account as
the account name. For more information, see one of the following sections:
Troubleshooting
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Nighthawk X4S AC2600 WiFi VDSL/ADSL Modem Router Model D7800