Flashing red broadband, but internet is working.

Hi there, Dima78. We understand that you have a red flashing light on your router, but the internet is working. That is very strange indeed. Let's figure this out together. 

Red lights are never a good thing. A red light on the broadband connection normally means that the router itself is disconnected from the network.

In your case, since the internet is working, it might be just a light malfunction on the router. Let try factory resetting the router. Follow these steps: 

1. Press and hold the gateway Reset button for at least 10 seconds. If you let go before 10 seconds, the gateway will reboot, but it won’t reset.
2. Wait until the gateway restarts and all the status lights are lit. 
3. See if the Broadband or Service status lights are solid green. If so, the reset worked.

If this does not correct the lights, but the internet still is working, then a replacement is in order. We can help with that too. Please upate us and let us know if you need the replacement. 

We are always here to help. 

Matthew, AT&T Community Specialist

I have reset and rebooted twice. The red indicator is also lit but the Internet is working.

Thanks for coming back and for troubleshooting, Dima78. Let's move on to the next step. 

Our next step is to move this conversation to the AT&T Direct Message space. You will see a chat icon, next to a bell icon, in the upper right of this thread, and next to your forums profile icon.

If you do not see the next message right away, please log out of your forums account and back in. 

Matthew, AT&T Community Specialist