Router only showing 100 not 1000

[#1]

New Fios install today. I am using my own router. With most devices including my laptop and cable modem, I get a nice green light indicating 1000 full duplex i.e., gigabit. When I plugged in the cat6 to the ONT, I only get the orange light i.e., 100 full duplex.

The tech told me this is because my service is only 100/100, but I've not seen this happen with any other device in my IT experience. Furthermore, I'm getting ~65/90.

What gives?

[#2 · Accepted solution]

I reset the ONT power and the handshake with my router is now 1000 full duplex.

Odd behavior from the ONT, but it's working now and I'm getting the full 100/100 over WiFi.

I hope somebody else searching for this answer like I was comes across this and finds it helpful!

[smith6612]

Do keep an eye on the link. If it flips back to 100Mbps or has packet loss, your terminations or cable run are dodgy and need to be re-done. Usually it's the terminations.