Ethernet cable between Airport Extreme and Express
The Air Extreme is my main base station, the Express is to extend the range one floor down in my basement. If I connect Extreme and the Express wireless everything works fine but sometimes it's a little laggy. I have an Ethernet cable between my main floor and the basement but if I plug it in the Extreme and then the Express, the whole network goes down. I have reset the Express.
Anyone got a good suggestion to how to hook the Express into the Extreme with cable?