How can I change the WAN port of my x6 R8000 to 1000M from 100M?

[ardy_chen]

I bought R8000 several years ago when I was using a 100M network. Now, I have upgraded the network service to 1000M. I am getting no more than 100M speed in the Speed Test. I entered the router administration page and found the WAN port status is 100M/Full. 

I unplug the cable and plug it into a new router the ISP provided me. It works with 1000M speed.

I have tried several ways I found in the community, but no luck. It still does not work. How can I resolve this problem?

Information

- Model: X6 R8000

- Firmware: V1.0.4.84_10.1.84 (I have tried to reset to factory settings or upgraded the firmware to the latest version)

- Moden: support 1G

- Cable: CAT-6

- QoS is disabled.

[FURRYe38]

What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?

Have you powered OFF both Modem and router for 1 minute then back on? I would pull the power adapter for the R8000 from the wall, then plug back in. 

The speed on all ports is auto detected. There is no user setting. 

As a quick test, connect a wired PC to the WAN port on the R8000 and look at the connection speed seen on the Status option window in Windows to see if the PCs ethernet is connecting at 100Mb or 1Gb. 

[ardy_chen]

Got a result for your recommendation of "quick test", it is 100M. Does it mean the WAN port of the router only supports the connection at 100M?

[FURRYe38]

No, sounds like the WAN port is faulty or stuck in a bad state. 

Try this, unplug everything from the router while ON. Press the reset button for 10 seconds then release. When you see the Internet LED turn OFF, unplug the power plug from the router for 30 seconds, Press the power button so it's in the OFF position then plug the power back in then power up. Leave all unplugged. When the power LED is white, plug in the PC ethernet adapter again, check for 100Mb or 1Gb...if it's still 100Mb, then the WAN port is bad. 

[ardy_chen]

Thank you. Follow your steps and try twice. No luck. It is still 100Mb. 

[FURRYe38]

Seems like the WAN port is faulty. 

How long have you had this router? 

[ardy_chen]

6 years...

[michaelkenward]

I see no suggestion that you have tried the most obvious test. What happens if you use a different cable?

These things can go bad. Trying a new one has proved successful here many times.

[ardy_chen]

I have tried to use a new cable but got the same result. I used these two cables to plug into the new router the ISP provided. Both of them can work at 1Gb connection.