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Troubleshooting
152
A750 Wireless Dual Band Gigabit Router JR6150
For a wired connection, make sure that the numbered LAN port LED is on for the port to
which you are connected.
Check that the appropriate LEDs are on for your network devices. If your router and
computer are connected to a separate Ethernet switch, make sure that the link LEDs are
on for the switch ports that are connected to your computer and router.
Wrong network configuration
Verify that the Ethernet card driver software and TCP/IP software are both installed and
configured on your computer.
Verify that the IP address for your router and your computer are correct and that the
addresses are on the same subnet.
Test the Path from Your Computer to a Remote Device
After verifying that the LAN path works correctly, test the path from your computer to a remote
device.
1. From the Windows toolbar, select Start > Run.
2. In the field provided, type:
ping -n 10 <IP address>
where <IP address> is the IP address of a remote device such as your ISP DNS server.
If the path is functioning correctly, replies like the examples shown in Test the LAN Path to
Your Router on page 151 are displayed. If you do not receive replies, check the following:
Check that your computer has the IP address of your router listed as the default gateway.
If the IP configuration of your computer is assigned by DHCP
, this information is not
visible in your computer’s Network Control Panel. Verify that the IP address of the router
is listed as the default gateway.
Check to see that the network address of your computer (the portion of the IP address
specified by the subnet mask) 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 computer, enter that host name as the account
name in the Internet Setup screen.
Your ISP might be rejecting the Ethernet MAC addresses of all but one of your
computers.
Many broadband ISPs restrict access by allowing traffic only from the MAC address of your
broadband modem. If your ISP additionally restricts access to the MAC address of a single
computer connected to that modem, configure your router to “clone” or “spoof” the MAC
address from the authorized computer.
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