ZigBee specifies three different broadcast addresses that reach different collections of nodes.
Broadcasts are normally sent only to routers.
Broadcasts can also be forwarded to end devices, either all of them or only those that do not sleep.
Broadcasting to end devices is both significantly more resource-intensive and significantly less reliable than broadcasting to routers.
ZigBee Broadcast Addresses
ZigBee specifies three different broadcast addresses that reach different collections of nodes. Broadcasts are normally sent only to routers. Broadcasts can also be forwarded to end devices, either all of them or only those that do not sleep. Broadcasting to end devices is both significantly more resource-intensive and significantly less reliable than broadcasting to routers.