I have tried the Ethernet to wap, and assigned both devices to same SSID, etc..., however the main router is upstairs on one side of house and 2nd one is main floor opposite end of house, so when I am connected to say downstairs AP and walk upstairs there is still enough signal to keep me connected to downstairs router but not strong enough to provide any bandwidth. Even though I am standing next to upstairs router it won't switch. I have to turn off/on wifi on Mac or iPhone, then it connects to upstairs. Same thing when I walk downstairs. I have the Asus Dark Knight as main up, and have tried an older AirPort Extreme as well as an Asus EA-N66 down and just can't figure out how to get seamless wifi in whole house which is about 2700 SF 2 story. Any suggestions?