公开(公告)号：US20190317749A1

公开(公告)日：2019-10-17

申请号：US15952566

申请日：2018-04-13

Applicant: Cisco Technology, Inc.

Inventor： Die Hu ,  Kang Li ,  Huimin She ,  Xiang Fang

IPC: G06F8/65 ,  H04L12/24

Abstract: In a multiple interface, low power and lossy network comprising multiple nodes, a Network Management System (“NMS”) communicating firmware upgrades in each node of a network utilizing centralized scheduling and distributed dissemination of firmware blocks. A firmware update image is broken into blocks and transmitted throughout the network of nodes. In certain instances, every node does not receive every firmware block. The NMS receives a bitmap from the nodes indicating which of the blocks each node is missing from the update. The NMS identify particular nodes that are missing blocks and source nodes that have the blocks and are nearest to the particular recipient nodes. The NMS determines the route for the source node with the block to deliver the block to the recipient node that this missing a block. The source nodes that are identified and instructed to communicate a block to a recipient node.