| Publisher | Association for Computing Machinery | ||
|---|---|---|---|
| Format | 643.3KB PDF | Date added | 31 Aug 2007 |
| Topics | Monitoring Systems, Service Level Management, SLA | ||
| Downloads | 40 | ||
Service Level Agreements (SLAs) define performance guarantees made by service providers, e.g, in terms of packet loss, delay, delay variation, and network availability. This paper describes a new active measurement methodology to accurately monitor whether measured network path characteristics are in compliance with performance targets specified in SLAs. Specifically, the paper describes a new methodology for estimating packet loss rate that significantly improves accuracy over existing approaches; and introduces a new methodology for measuring mean delay along a path that improves accuracy over existing methodologies, and proposes a method for obtaining confidence intervals on quantiles of the empirical delay distribution without making any assumption about the true distribution of delay.
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