Dimensioning Bandwidth for Elastic Traffic

  • Authors:
  • Zhong Fan

  • Affiliations:
  • -

  • Venue:
  • NETWORKING '02 Proceedings of the Second International IFIP-TC6 Networking Conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications
  • Year:
  • 2002

Quantified Score

Hi-index 0.00

Visualization

Abstract

In this paper, we discuss the issue of dimensioning Internet access lines for elastic traffic. This is important for Internet service providers (ISPs) because over-dimensioning wastes precious bandwidth resources, while under-dimensioning generally leads to less satisfactory quality of service (QoS) perceived by subscribers. Our discussion is based on the M/G/R processor sharing model which characterizes TCP traffic at flow level. Our analysis demonstrates the impact of a number of key factors (and their relations) on the dimensioning procedure. We consider two dimensioning methods based on different QoS criteria. It is found that the method based on the delay factor is superior in that both the average delay (throughput) and blocking performance targets can be satisfied. Numerical and theoretical analyses also illustrate that significant multiplexing gain can be achieved for elastic flows and this gain increases with burstiness.