Statistical Analysis of IP Delay Measurements as a Basis for Network Alert Systems

Abstract

Measuring packet delay and packet loss through dedicated test packet streams in computer networks allows for the assessment of Quality of Service on the path the probes traverse. For this reason, active IP performance measurements have been carried out in X-WiN, Germany's National Research and Educational Network, and GÉANT2, its European counterpart, by the WiN-Labor Group of the University of Erlangen-Nuremberg for many years. This paper provides an overview of how network measurements can be interpreted using a variety of statistical concepts in order to gain insight into the state of monitored connections. The focus here is set on the analysis of One-Way Delay (OWD); the approach demonstrates how OWD can be used for the identification of network congestions and can serve as a basis for network alert systems by statistically categorizing changes in the performance metric.

Investigating the impact of network security on the line current differential protection system

“…The communication latency can be divided into two different parts: the intrinsic and the routing delay according to [16]. The intrinsic delay is the deterministic part which is constant for one specific route.…”