how can i broadcast from router to all other xbee nodes

i have been working on a project called radio tomographic imaging.i have to create a sensor network with 2 nodes.
then i have to broadcast from coordinator .After corrdinator broadcast to routers,routers should send the data all other nodes.Is it possible with zigbees?
How can i do that?

All you have to do is set the DH and DL to broadcast (0x000000000000FFFF) on all the routers. Keep in mind zigbee is limited to 8 broadcasts per 8 seconds. If you are pushing a large number of broadcasts you may want to switch to 802.15.4 radios.