Important assumptions:

  • we know significant benchmark characteristics for relevant services;
  • internal QoS is better than external;

    Summarizing some critical consequences:

  • the Network Monitoring topology depends on network performance. In fact if the basic assumption -- internal QoS is better than external -- fails, the characteristics collected by Theodolites is not valid data for brokers;
  • internal connectivity of Domains should be monitored (not necessarily published), in order to detect the occurrence of performance problems.

    Degrees of freedom in the choice of the Connectivity characteristic:

  • it is not necessarily a distance (triangular inequality etc.);
  • it may be a-dimensional (dB);
  • it may be not relevant for applications, and possibly unpublished.

    Previous: Mapping of the GGF schema

    GGF7 --- Tokio, March, 2003