Differentiated Services Evolution

• Hypothesis 1: a wide range of service allocation time/space scales and assurance levels will be desired (and offerred)

• Hypothesis 2: overall packing efficiency can be improved if resources are explicitly (statically/dynamically) provisioned for each tier of time/space allocation scale and assurance level

• Conclusion: the router differentiation model should evolve to a variant of Class-Based Queueing
  • implementing a hierarchy of bandwidth and buffer sharing rules
  • providing minimal assured resources for each tier

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