@Carl Please provide a solution for the same issue. i have bought 2x Archer C6 . They are failing at negociation 1000mbps it shows clearly that enters 1000mbps and the lan fails to negociate and...

I have the same problem. I use ZTE 1000mbps + 2x Archer C6 connected to each other (negociated connection at 100 mbps ) and at the end a pc that gets 90 mbps. Not long ago i had the same problem that...