This paper presents a new scalable buffer-management scheme for IP Differentiated Services. The scheme consists of a Differentiated Random Drop (DRD) algorithm using feedback from a virtual scheduler. DRD choses a queue to perform an early packet drop to avoid congestion according to a specific probability function. It will be shown that DRD in conjunction with first-come first-served scheduling is able to support relative service differentiation. The virtual scheduler is introduced to enable service differentiation in terms of bandwidth and delay at the same time. A virtual scheduler runs in parallel to the real scheduler and maintains virtual queue lengths that are being used by the congestion avoidance scheme for packet-drop decisions. Scheduling packets for transmission is performed by the real scheduler only.
CITATION STYLE
Pletka, R., Droz, P., & Stiller, B. (2001). A buffer-management scheme for bandwidth and delay differentiation using a virtual scheduler. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 2093, pp. 218–234). Springer Verlag. https://doi.org/10.1007/3-540-47728-4_22
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