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RED behavior with different packet sizes

Stefaan De Cnodder·Omar Elloumi·Kenny Pauwels
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Abstract

We consider the adaptation of random early detection (RED) as a buffer management algorithm for TCP traffic in Internet gateways where different maximum transfer units (MTUs) are used. We studied the two RED variants described in [4] and point out a weakness in both. The first variant where drop probability is independent from the packet size discriminates connections with smaller MTUs. The second variant results in a very high packet loss ratio (PLR), and as a consequence low goodput, for connections with higher MTUs. We show that fairness in terms of loss and goodput can be supplied through an appropriate setting of the RED algorithm.

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Stefaan De Cnodder, Omar Elloumi, Kenny Pauwels. 2000-01-10. RED behavior with different packet sizes. https://doi.org/10.1109/iscc.2000.860741

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