Airport Express problem. Extend network. Ethernet

Maybe your router doesn't allow your network to be extended. Like I know with my Airport Extreme, there is an option that says something like "allow network to be extended" and you can enable it or disable it.

 

I believe that the Airport Express can only extend the network from an Airport Extreme although I could be wrong.

 

apple.com/support

The VERY FIRST FAQ question for Airport is this.

Question: Can AirPort Express wirelessly extend ("repeat" or "rebroadcast") the network of a third-party access point?
Answer: No. But it can wirelessly extend the range of a WDS network that is being hosted by an AirPort Extreme Base Station or another AirPort Express.

 

Extending Extreme with Express

I just purchased Extreme, hoping to extend my signal to an adjacent building. The range is better than Express; however the receiving point in my building (iPod touch) is below grade and behind a concrete foundation; hence no signal. I can run an ethernet cable from Extreme to this building. If I position an Express in the building and plug the ethernet cable from Extreme into it (approx. 70 ft cable) and fiddle with the set-up in the Airport utility, will I be able to get a signal to the touch in the outbuilding?

If someone could walk me through this procedure (if possible), I would be grateful.

Thanks

 

HELP! ?Bad Express or Stupid user?

The answer is probably the latter.

I have a network hard wired to an Airport Extreme (2 Macs sharing a cable modem and printer). However, I can't use my wireless devices throughout the house, so I purchased a Express to extend/bridge the network.

I plugged in the Express right next to the extreme to configure it. However - it is not showing up in my already installed Airport Utility Version 5.4.2 (542.22), an flashes amber. I've unplugged it, and even done a reset to no avail. I don't think of myself as stupid, but am I missing something (or am I not too bright?).

I've searched and cant find the answer. Thanks!