[SOLVED] After power outage, ethernet ports stopped working but WiFi still works ?

[Orbit Storm]

After a brief power flicker, all four ethernet ports on my Xfinity Gateway (model TG1682) stopped working. I've tried reseating the cables and rebooting the gateway multiple times with no luck. I'm unable to connect to the gateway login or ping the gateway from any ethernet device. WiFi still works and the gateway is accessible over WiFi as well. Each of the ethernet ports still display flickering lights as though data is passing through and the ports are listed as active on the gateway.

I have not yet factory reset the gateway and that's my next step. I'm just throwing up a prayer for a potential resolution that I might be overlooking ?

 

[bill001g]

It is somewhat strange that the ports light up but do not pass data.

Not that is makes much difference but can you ping between the machines connected to the ethernet ports. You may have to manually assign ip addresses if they did not get one from the router.

I am going to bet if you do ipconfig /release and ipconfig /renew you do not even get IP.

But you have done pretty much all you can. The next step is a factory reset. Even though modern routers tend to have it on the same chip there is 5 port switch that runs the 4 ethernet ports. There is a connection between the switch chip and the router chip on the 5th port. Although it is rare these chips have the ability to sometime be configured as say a vlan trunk port. If it got into the wrong mode it can do this. Unfortunately it is much more likley this chip has just failed and even a factory reset will not fix it.