Self-Awareness and Adaptivity for Quality of Service

  • Authors:
  • Erol Gelenbe;Michael Gellman;Pu Su

  • Affiliations:
  • -;-;-

  • Venue:
  • ISCC '03 Proceedings of the Eighth IEEE International Symposium on Computers and Communications
  • Year:
  • 2003

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Abstract

Network self-awareness is the ability of a network to observeits own behavior using internal probing and measurementmechanisms, and to make effective autonomous use ofthese observations for self-management. Experiments areconducted to evaluate the Goal's impact on observed QoSfor the user's payload. In addition to packet loss due to congestion,we also introduce an artificial packet loss at certainnodes to represent failures or other undesirable events. Wesee that just using delay in the QoS goal is a good way toreduce delay and loss if losses are only the result of congestion.However, as one would expect, using loss in the user'sQoS Goal is seen to be useful if the paths which are selectedby SPs are to avoid nodes where packet losses are occuringfor reasons other than congestion. In general we see a goodcorrelation between the QoS Goal that the SPs use to findpaths, and the resulting QoS observed by DPs.