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IWQOS
2001
Springer

On Creating Proportional Loss-Rate Differentiation: Predictability and Performance

13 years 8 months ago
On Creating Proportional Loss-Rate Differentiation: Predictability and Performance
— Recent extensions to the Internet architecture allow assignment of different levels of drop precedence to IP packets. This paper examines differentiation predictability and implementation complexity in creation of proportional loss-rate (PLR) differentiation between drop precedence levels. PLR differentiation means that fixed loss-rate ratios between different traffic aggregates are provided independent of traffic loads. To provide such differentiation, running estimates of loss-rates can be used as feedback to keep loss-rate ratios fixed at varying traffic loads. In this paper, we define a loss-rate estimator based on average drop distances (ADDs). The ADD estimator is compared with an estimator that uses a loss history table (LHT) to calculate loss-rates. We show, through simulations, that the ADD estimator gives more predictable PLR differentiation than the LHT estimator. In addition, we show that a PLR dropper using the ADD estimator can be implemented efficiently.
Ulf Bodin, Andreas Jonsson, Olov Schelén
Added 30 Jul 2010
Updated 30 Jul 2010
Type Conference
Year 2001
Where IWQOS
Authors Ulf Bodin, Andreas Jonsson, Olov Schelén
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