2.1 Child Device Management

Child management is a procedure for which parent devices must now age out neighbor table entries for unresponsive end device children by a pre-configured default timeout. This aging timeout can be changed per end device upon request from that end device using the End Device Timeout Request command. MAC data polls are sent from a child end device to reset the parent's aging counter. But once the timeout value is exceeded and the child is aged out, the parent will send the device a Leave Request with the rejoin attribute set so that the device may be allowed to rejoin the network through a new parent device.