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Troubleshooting 
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 R6250 Smart WiFi Router
For a wired connection, make sure that the numbered LAN port LED is lit 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 
lit 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, click the Start button and select Run.
2. 
In the Windows Run window, 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 like those shown in the previous section are 
displayed.
If you do not receive replies:
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 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 could 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. Some ISPs additionally restrict access to the MAC address of a single 
computer connected to that modem. If so, configure your router to “clone” or “spoof” the MAC 
address from the authorized computer.