In the manner which measures the network performance packet switched network due to packet switched network quality measuring method and its device,

摘要

PROBLEM TO BE SOLVED: To provide a method and device for measuring the quality of a packet switching network capable of measuring the instantaneous loss of large amounts of packets or the fluctuation of a packet delay time to be generated when traffic whose burst characteristics are strong flows in a network.;SOLUTION: A pseudo packet generation part 42 and a pseudo packet transmission part 43 respectively prepare and transmit a pseudo packet column on which the burst characteristics of packets flowing in a network to be measured are reflected, and record the transmission time and specific ID of each packet. Then, a pseudo packet receiving part 44 records the arrival time and specific ID of each packet of the received pseudo packet column, and a packet loss calculation part 45 calculates the number of received packets from the arrival records, and calculates packet loss by calculating a difference between the number of transmission packets and the number of reception packets, and a packet delay time calculation part 46 calculates a packet delay time by calculating a difference between the arrival time and transmission time from the records of the arrival time and the records of the transmission time for each packet.;COPYRIGHT: (C)2003,JPO