Click the "Direct Message" icon (upper right corner of this page) Click the "New message" (pencil and paper) icon. Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list. Type your message in the text area near the bottom of the window. Press Enter to send your message. If your computer's IP address is not in the specified segment, it cannot access the Internet. Perform the following steps to change its IP address: Use a network cable to connect the computer to the router's LAN port. Click the network connection icon in the lower right corner of your computer desktop, then open Network and Sharing Center. I've got a WBMR-HP-G300H Buffalo Airstation router on which I've installed the lates OpenWRT software. All is working well (ADSL, WIFI etc) except for one niggle. I can't communicate between lan ports. i.e. if I have one computer connected on lan port 1 and I try to ping another computer on lan port 2 then I get "destination unreachable". Click Start, then head to Settings > Update & Security. On the left pane menu, select Troubleshoot. From the Find and fix other problems section, click Network Adapter > Run the troubleshooter. Select Ethernet from the network adapters list and then click Next to start the troubleshooting process. If a port LED with an Ethernet cable is not lit, move the cable to a different port on the back of the router. If a port LED still does not light, see the router manual. If you are using a wireless device, check that the LED on the wireless adapter is lit. If the wireless adapter LED is not lit, then do not continue with this article. Check for Physical Damage If an Ethernet cable doesn't work, the cord may have internal damage. It's also possible that the RJ-45 connector has bent wires. The easiest solution is to replace the cable altogether. But you can also use RJ45 Network Cable Testers to check for discontinuity. .

router ethernet ports not working