Patent ID: 7660262
Filing Date: 2010-02-09
Classification: H04L

Abstract:
1. A network management method performed in a communication network system comprising at a plurality of nodes and a network management system, the method comprising steps of: identifying and recording, at each of the plurality of nodes, header information in response to reception of a first packet and duplicate packets which are duplicates of the first packet, the duplicate packets having the same header information as the first packet; reporting, to the network management system from a first node, reception information when the first node receives the duplicate packets more than a predetermined number of times; giving notice of discard order of the duplicate packets having the same header information from the network management system to each nodes; and discarding, at each node, the duplicate packets according to the notice of discard order, wherein the duplicate packets are replicas duplicated by executing, at each node, a program that commands a node to duplicate the first packet and duplicate packets.