User manual

Chapter 7. Troubleshooting | 91
N150 Wireless ADSL2+ Modem Router DGN1000 User Manual
Test the Path from Your Computer to a Remote Device
After you verify that the LAN path works correctly, test the path from your PC to a remote
device. In the Windows Run screen, type:
ping -n 10 IP address
where IP address is the IP address of a remote device such as your ISP’s DNS server.
If the path is functioning correctly, replies as described in Test the LAN Path to Your Wireless
Modem Router on page 90 display. If you do not receive replies:
• Check that your PC has the IP address of your router listed as the default wireless
modem router. If the IP configuration of your PC is assigned by DHCP, this information is
not visible in your PC’s Network Control Panel. Verify that the IP address of the router is
listed as the default wireless modem router as described in the online document that you
can access by clicking
Preparing Your Network on page 98.
• Check that the network address of your PC (the portion of the IP address specified by the
netmask) is different from the network address of the remote device.
• Check that your cable or DSL modem is connected and functioning.
• If your ISP assigned a host name to your PC, enter that host name as the account name
in the Basic Settings screen.
• Your ISP could be rejecting the Ethernet MAC addresses of all but one of your PCs. Many
broadband ISPs restrict access by allowing traffic only from the MAC address of your
modem, but some additionally restrict access to the MAC address of a single PC
connected to that modem. In this case, configure your router to clone or spoof the MAC
address from the authorized PC.
Cannot Log in
If you cannot log in to the wireless modem router from a computer on your local network,
check the following:
• The router is plugged in and it is on.
• You are using the correct login information. The login name is admin, and the password
is password. Make sure that Caps Lock is off when you enter this information.
• If you cannot connect wirelessly, try an Ethernet connection and view the router wireless
settings and set up your wireless computer with corresponding wireless settings.
• If you are using an Ethernet-connected computer, check the Ethernet connection
between the computer and the router. The LAN LED for the port you are using on the
router should light up to show your connection.
• Your computer’s IP address is on the same subnet as the router. If you are using the
recommended addressing scheme, your computer’s address should be in the range
192.168.0.2 to 192.168.0.254. Follow the instructions in the online document that you can
access by clicking
Preparing Your Network on page 98 for information about how to
configure your computer.