Adaptive tuning of drop-tail buffers for reducing queueing delays

Rade Stanojevic, Robert N. Shorten, Christopher M. Kellett

Research output: Contribution to journalArticle

35 Citations (Scopus)


Internet router buffers are used to accommodate packets that arrive in bursts and to maintain high utilization of the egress link. Such buffers can lead to large queueing delays. We propose a simple algorithm, Active Drop-Tail (ADT), which regulates the queue size, based on prevailing traffic conditions, to a minimum size that still allows for a desired (high) level of utilization. Packet level ns2 simulations are provided to show that Adaptive Drop-Tail achieves significantly smaller queues than current approaches at the expense of 1-2% of the link utilization.

Original languageEnglish
Pages (from-to)570-572
Number of pages3
JournalIEEE Communications Letters
Issue number7
Publication statusPublished - Jul 2006
Externally publishedYes



  • Drop-Tail queues
  • Queueing delays
  • Router buffers
  • TCP

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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