An Analysis of Aggregate-Traffic Marker for Multi-Service Networks

概要

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The differentiated services (DiffServ) architecture is proposed to provide a service differentiation between traffic classes or behavior aggregates in a scalable manner. A key functional element to deploy DiffServ is traffic conditioning, more specifically traffic marker. This paper proposes an adaptive and aggregated traffic marker embodying the functions : (1) interconnect two-rate three color markers (trTCMs), (2) estimate tinaggregate rate of Assured Forwarding (AF) classes, and (3) remark the some parts of excessive portion of assigned link-rate per AF class queue with some down-grading probability to lower AF class. Both analysis and simulations are used to evaluate the performance of the proposed aggregate-traffic marker. The analysis of the proposed marker shows its clear service differentiation among behavior aggregates (Bas) under different traffic load conditions. Also a performance evaluation is performed through network simulation with more realistic traffics as unbalanced intensities among different Bas. Shortly, our proposed aggregatetraffic marker enables to keep the priority orders in terms of loss rate and delay/jitter among Bas in spites of varying and unbalanced traffic intensities.
社団法人電子情報通信学会の論文
2003-02-01