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WaterLettuce's profile



1 Message

Monday, January 7th, 2019 8:35 AM

Very troublesome issue with Ethernet Connection



Recently, I accidentally unplugged my router, model 5268AC FXN, and hardbooted it. When I plugged it back in, my WiFi came back up but my Ethernet never returned.


While trying to connecting to Ethernet on my Windows 8 PC, "Unidentified Network, Public Network ..... No Internet Access" is displayed in the Network and Sharing Center. The network icon appears "limited", having the yellow triangle in the lower left corner.


I tried to plug the Ethernet cable into another machine, my laptop, and it still has the same issue, "Unidentified Network". 


Here, I tried to troubleshoot the problem by running these commands in Windows CMD on the PC connected to Ethernet:



nbtstat –R

nbtstat –RR

netsh int ip reset c:\resetlog.txt

netsh winsock reset

netsh int tcp reset

and I also set a custom DNS and IP Address for the PC:

IP address:
Default gw

preferred DNS:
alternate DNS:

Along with this, I also tried:

- Restarting the router (waiting 15+ seconds)

- Resetting the router

- Restarting the computer 

- Restarting the Ethernet network adapter (disable/enable)

- Uninstalling and reinstalling network adapter

- Uncheck power saving options for Ethernet

- Scan for updated drivers


- Switched up the ports for Ethernet cables on the router. (This seemed to have the biggest effect as the router actually communicated packets to the PC for a short while before stopping again. After switching ports, it showed that it was connected to "Network 3", and had Internet Access, even though I couldn't load webpages, then stopped working after a minute or two). 


I also tested the ethernet cable by plugging it into my laptop ([Windows 10] has working WiFi Internet) and creating a Network Bridge with my PC. This was successful but provided an incredible slow internet connection.


Plugging the same ethernet cable back into the router, my Desktop only displays "Unidentified Network".


This leads me to the belief that the problem comes from either the router hardware, or configuration.


Any thoughts? Please let me know if anyone can provide help as I have spent 6 hours trying to troubleshoot this.




Ethernet ports and front of router: 




2 Attachments

Community Support


232.8K Messages

5 years ago

Hi There! @WaterLettuce


We understand that you are having trouble with your internet connection.  According to your post, you have done some extensive troubleshooting.  Thank you for taking self support as your first option. 


We do want to look into this further.  


What we are going to is, we will be sending you a private message to your Forums Inbox.  Once you get the notification, please log-in to your forums account and locate your inbox(the envelope icon) and open that and click on the message that it contains and reply there with the information that is requested.


We do look forward to working with you to get this matter resolved.


Matthew, AT&T Community Specialist

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