I just installed airport extreme to my network, my Imac & Ipads work OK but my iphone & ipods & printerr cannot pick up the network.
I have a cable service but because of issues have to rely on the wifi for my Imac and everything else.
So Airport Extreme is connected to the internet via a ethernet cable.
Also my printer no longer can be seen by the imac - its a canno which was alawys able to be seen by my imacs and by my ipad