Upgrading network firmware

A method, comprising:

• in a low power and lossy network (LLN) comprising one or more interfaces and a plurality of nodes, communicating, by a network management system, one or more blocks of data to the plurality of nodes, wherein the plurality of nodes are separate and distinct from the network management system;
• receiving, by a first node from a network management system, the one or more blocks of data comprising a particular block of data;
• receiving, by a second node from the network management system, the one or more blocks of data except for the particular block of data;
• receiving, by the first node and the second node from the network management system, a request for a status of the one or more blocks of data received;
• communicating, by the first node to the network management system, a status of the blocks of data received;
• communicating, by the second node to the network management system, a status of the blocks of data received;
• determining, by the network management system based on the communicated statuses, that the second node did not receive the particular block of data;
• determining, by the network management system, that the first node is located along a shortest pathway from the second node as compared to a pathway length between the second node and the plurality of nodes that have received the particular block of data;
• receiving, by the first node, instructions from the network management system to communicate the particular block of data to the second node, wherein the instructions are comprised of a path for the first node to communicate the particular block of data to the second node, and wherein the path is comprised of the shortest pathway from the first node to the second node;
• and
• communicating, by the first node, the particular block of data to the second node.

A computer program product, comprising a tangible, non-transitory, computer-readable media having software encoded thereon, the software when executed by a processor operable to:

• communicate a plurality of blocks of data to a plurality of nodes;
• receive a status of each of the plurality of nodes, the status indicating which of the blocks of data received by each of the plurality of nodes;
• determine, based on the received statuses, that a first node has not received a particular block of data;
• determine, based on the received statuses, one or more nodes that have received the particular block of data;
• determine an overall strategy to communicate the particular block of data to the first node from the one or more nodes that have received the particular block of data, wherein the strategy comprises selecting a second node from the one or more nodes that have received the particular block of data, the second node being located along a shortest pathway from the first node as compared to a pathway length between the first node and each of the remaining nodes of the one or more nodes that have received the particular block of data;
• and
• communicate instructions to the second node to communicate the particular block of data to the first node, wherein the instructions are comprised of a route for the second node to communicate the particular block of data to the first node, and wherein the route is comprised of the shortest pathway from the first node to the second node.

A system, comprising:

• a processor adapted to execute one or more processes;
• and
• a memory configured to store a process executable by the processor, the process when executed operable to:
• receive a status of each of a plurality of nodes, the status indicating which of a communication of blocks of data were received by each of the plurality of nodes;
• determine, based on the received statuses, that a first node has not received a particular block of data;
• determine, based on the received statuses, one or more nodes that have received the particular block of data;
• determine an overall strategy to communicate the particular block of data to the first node from the one or more nodes that have received the particular block of data, wherein the strategy comprises selecting a second node from the one or more nodes that have received the particular block of data, the second node being located along a shortest pathway from the first node as compared to a pathway length between the first node and each of the remaining nodes of the one or more nodes that have received the particular block of data;
• and
• communicate instructions to the second node to communicate the particular block of data to the first node, wherein the instructions are comprised of a route for the second node to communicate the particular block of data to the first node, and wherein the route is comprised of the shortest pathway from the first node to the second node.