Patent ID: 11909543
Assignee: CISCO TECHNOLOGY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. An apparatus implemented as a physical machine, the apparatus comprising:
non-transitory machine readable media configured for storing executable machine readable code, wherein the apparatus is implemented as network device;
a device interface circuit; and
a processor circuit configured for executing the machine readable code, and when executing the machine readable code operable for:
generating a destination oriented directed acyclic graph (DODAG) that is rooted by the network device, the generating of the DODAG based on outputting an instruction implementing multicast communication in the DODAG, and
multicasting a targeted packet that is destined for at least one targeted member device of the DODAG, the targeted packet causing sequential unicast communications in the DODAG,
wherein the targeted packet causes a router device in the DODAG to establish a unicast route for reaching the destination device within a prescribed limited number of hops, and
wherein the targeted packet is a unicast packet specifying a destination address encapsulated within a multicast packet specifying a multicast address, the at least one targeted member device operating as a destination device and processing the unicast packet in response to detecting the destination address associated with the destination device.