A per-flow based node architecture for integrated services packetnetworks

摘要

This paper presents a network node architecture and severaltraffic management mechanisms that are capable of achieving QoSprovisioning for the guaranteed service (GS), the controlled-load (CL)service, and the best-effort (BE) service under IETF integrated services(IntServ) paradigm. Our architecture offers the attractive feature ofin-sequence delivery for all packets, albeit some of which may beout-of-profile. Simulation results show that, once admitted into thenetwork, our architecture and traffic management algorithms provide hardperformance guarantees to GS flows under all conditions, consistent (orsoft) performance to CL flows under both light load and heavy loadconditions, and minimal negative impact to in-profile GS, CL and BEtraffic should there be any out-of-profile behavior from someflows