code: def _agent_notification(self, context, method, hosting_devices, operation):
          
          admin_context = context.is_admin and context or context.elevated()
          for hosting_device in hosting_devices:
              agents = self._dmplugin.get_cfg_agents_for_hosting_devices(
                  admin_context, hosting_device['id'], admin_state_up=True,
                  schedule=True)
              for agent in agents:
                  LOG.debug('Notify %(agent_type)s at %(topic)s.%(host)s the '
                            'message %(method)s',
                            {'agent_type': agent.agent_type,
                             'topic': agent.topic,
                             'host': agent.host,
                             'method': method})
                  cctxt = self.client.prepare(server=agent.host)
                  cctxt.cast(context, method)
docs: Notify individual Cisco cfg agents.