Reducing Network Congestion and Blocking Probability through Balanced Allocation

  • Authors:
  • Malwina J Luczak;Eli Upfal

  • Affiliations:
  • -;-

  • Venue:
  • FOCS '99 Proceedings of the 40th Annual Symposium on Foundations of Computer Science
  • Year:
  • 1999

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Abstract

We compare the performance of a variant of the standard {\it Dynamic Alternative Routing (DAR)} technique commonly used in telephone and ATM networks to a path selection algorithm that is based on the balanced allocations principle - the Balanced Dynamic Alternative Routing (BDAR) algorithm. While the standard technique checks alternative routes sequentially until available bandwidth is found, the BDAR algorithm compares and chooses the best among a small number of alternatives.We show that, at the expense of a minor increase in routing overhead, the BDAR gives a substantial improvement in network performance in terms of both network congestion and blocking probabilities.