Directed multicast based on multi-dimensional addressing relative to identifiable LLN properties

An apparatus implemented as a physical machine, the apparatus comprising:

• non-transitory machine readable media configured for storing executable machine readable code;
• a device interface circuit configured for receiving one or more multicast registration messages for a low power and lossy network (LLN) device in an LLN;
• and
• a processor circuit configured for executing the machine readable code, and when executing the machine readable code operable for:
• receiving, by a root network device providing a directed acyclic graph (DAG) topology in a low power and lossy network (LLN), one or more multicast registration messages for an LLN device in the DAG, the one or more multicast registration messages identifying a plurality of distinct properties describing operation of the LLN device in the LLN,
• receiving, by the root network device, one or more multicast address group identifiers of one or more multicast streams to which the LLN device has subscribed, and associating the one or more multicast address group identifiers with the distinct properties of the LLN device,
• receiving a multicast message specifying one or more of the multicast address group identifiers, and
• generating and outputting, by the root network device, a directed multicast message having a composite IPv6 address, the generating including inserting a selected property identifier and an instruction identifier into the composite IPv6 address, the instruction identifier causing parent network devices in the DAG topology to execute a prescribed instruction associated with the instruction identifier and selectively retransmit the directed multicast message based on determining a child network device has the selected distinct property identified by the selected property identifier,
• wherein the processor circuit is configured for extracting from each of the one or more multicast registration messages a target IPv6 address specifying a corresponding property identifier for a corresponding distinct property of the LLN device.

One or more non-transitory tangible media encoded with logic for execution by a machine and when executed by the machine operable for:

• receiving, by the machine implemented as a root network device providing a directed acyclic graph (DAG) topology in a low power and lossy network (LLN), one or more multicast registration messages for an LLN device in the DAG, the one or more multicast registration messages identifying a plurality of distinct properties describing operation of the LLN device in the LLN;
• receiving, by the root network device, one or more multicast address group identifiers of one or more multicast streams to which the LLN device has subscribed, and associating the one or more multicast address group identifiers with the distinct properties of the LLN device;
• receiving a multicast message specifying one or more of the multicast address group identifiers;
• and
• generating and outputting, by the root network device, a directed multicast message having a composite IPv6 address, the generating including inserting a selected property identifier and an instruction identifier into the composite IPv6 address, the instruction identifier causing parent network devices in the DAG topology to execute a prescribed instruction associated with the instruction identifier and selectively retransmit the directed multicast message based on determining a child network device has the selected distinct property identified by the selected property identifier,
• wherein the receiving one or more multicast registration messages includes extracting from each of the one or more multicast registration messages a target IPv6 address specifying a corresponding property identifier for a corresponding distinct property of the LLN device.