def METHOD_NAME(self):
    self.nodes[LEADER].start()
    self.simulator.go(config.LEADER_STARTUP_DELAY)
    self.assertEqual(self.nodes[LEADER].get_state(), "leader")
    self.nodes[ED].start()
    self.simulator.go(5)
    self.assertEqual(self.nodes[ED].get_state(), "child")
    self.collect_rloc16s()
    addrs = self.nodes[ED].get_addrs()
    for addr in addrs:
        self.assertTrue(self.nodes[LEADER].ping(addr))
    key_sequence_counter = self.nodes[LEADER].get_key_sequence_counter()
    self.nodes[LEADER].set_key_sequence_counter(key_sequence_counter + 1)
    addrs = self.nodes[ED].get_addrs()
    for addr in addrs:
        self.assertTrue(self.nodes[LEADER].ping(addr))