Journal ArticleDOI
Random early detection gateways for congestion avoidance
Sally Floyd,Van Jacobson +1 more
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TLDR
Red gateways are designed to accompany a transport-layer congestion control protocol such as TCP and have no bias against bursty traffic and avoids the global synchronization of many connections decreasing their window at the same time.Abstract:
The authors present random early detection (RED) gateways for congestion avoidance in packet-switched networks. The gateway detects incipient congestion by computing the average queue size. The gateway could notify connections of congestion either by dropping packets arriving at the gateway or by setting a bit in packet headers. When the average queue size exceeds a present threshold, the gateway drops or marks each arriving packet with a certain probability, where the exact probability is a function of the average queue size. RED gateways keep the average queue size low while allowing occasional bursts of packets in the queue. During congestion, the probability that the gateway notifies a particular connection to reduce its window is roughly proportional to that connection's share of the bandwidth through the gateway. RED gateways are designed to accompany a transport-layer congestion control protocol such as TCP. The RED gateway has no bias against bursty traffic and avoids the global synchronization of many connections decreasing their window at the same time. Simulations of a TCP/IP network are used to illustrate the performance of RED gateways. >read more
Citations
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Journal ArticleDOI
TCP and explicit congestion notification
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REM: active queue management
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Journal ArticleDOI
Explicit allocation of best-effort packet delivery service
David D. Clark,Wenjia Fang +1 more
TL;DR: This paper focuses on algorithms for essential components of the "allocated-capacity" framework: a differential dropping algorithm for network routers and a tagging algorithm for profile meters at the edge of the network for bulk-data transfers.
Proceedings ArticleDOI
On designing improved controllers for AQM routers supporting TCP flows
TL;DR: A previously developed linearized model of TCP and active queue management (AQM) is studied, and the proportional integral (PI) controller is shown to outperform RED significantly.
References
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Posted Content
Forecasting, Structural Time Series Models and the Kalman Filter
TL;DR: In this paper, the authors provide a unified and comprehensive theory of structural time series models, including a detailed treatment of the Kalman filter for modeling economic and social time series, and address the special problems which the treatment of such series poses.