RB Service Rational

• Traffic different from Commodity backbone
  • high-speed user access (45/155/622 Mbps)
  • high-speed (155/622 Mbps) nationwide backbone
  • limited user community (~150 sites)
  • fewer flows, but flows potentially large & bursty
• Integrated Service Model
  • Integrated Services approach to QoS desired to support certain supercomputer applications
  • will be out of bandwidcth before scalability becomes a concern

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