Network calculus: application to switched real-time networking

  • Authors:
  • Jean-Philippe Georges;Thierry Divoux;Éric Rondeau

  • Affiliations:
  • Nancy-University, CNRS, Vandœuvre lès Nancy, France;Nancy-University, CNRS, Vandœuvre lès Nancy, France;Nancy-University, CNRS, Vandœuvre lès Nancy, France

  • Venue:
  • Proceedings of the 5th International ICST Conference on Performance Evaluation Methodologies and Tools
  • Year:
  • 2011

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Abstract

In this paper, we show how Network Calculus can be used to determine whether a switched network may satisfy the time constraints of a real-time application. If switched architecture are interesting in the sense that they offer flexible design and may eliminate collisions in Ethernet-based network, they are not guaranteeing end-to-end performances (in particular in terms of delay), especially when cross-traffic are present. We illustrate Network Calculus usefulness by showing how the internal switching structure of an Ethernet switch simplify the analysis and which kind of traffic inter-dependencies are problematic.