As @marktheknife indicated, you can get some of that information via the endpoint he indicated. That being said, I would recommend setting up an xbee3 to get a complete picture of your Zigbee network that will clearly (and dynamically) address points 1 & 2. Point 3 is more difficult to do - you'd need a scanner of some nature for that.
@NoWon's Everything Xbee thread is a great place to start:
