摘要：Accurate measurement of packet loss in network traffic has not been successful - the frequently used active monitoring technique using probe packets does not capture all packets loss experienced in traffic network. Passive Measurement Technique (PMT) is attractive because of its efficiency since user traffic is observed without inserting additional test traffic (probe packets) into the network. However, the technique is handicapped by its premature subtraction that may report as lost all packets that have left their source but have not yet reached their destination. This paper proposes a passive packet loss measurement technique with augmented parity check that effectively avoids the problems of either over estimating or under estimating the network performance as a result of the premature subtraction experienced in normal PMT. The effectiveness of the proposed PMT augmented with parity check technique is confirmed through a computer simulation
