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This work investigates the benefits and drawbacks of using a lottery to schedule and drop packets within a router. We find that a lottery can provide many distinct levels of service without requiring that per-flow state be maintained in the routers. We also investigate the re-ordering within a flow that can occur if a lottery is used to pick packets to forward without regard to their flow order.

Dieser Beitrag soll zeigen, dass sich das heute vorhandene IP-QoS-Instrumentarium nicht nur zur Erfüllung der Anforderungen von Audiooder Videoanwendungen eignet, sondern sich auch gezielt für ganz andere Management-Aufgaben einsetzen lässt. Mit einem intelligenten Bandbreitenmanagement wird ein wirtschaftlicher und fairer Umgang mit Netzressourcen erreicht. Dazu werden die verfügbaren Bandbrei...

In a QoS-Enabled network environment, there are two major concerns from both user’s and provider’s points of views: are there enough resources available for a particular traffic flow and what’s the price for this flow? These two questions are exactly what admission control and pricing try to answer. An architecture that integrates pricing and admission control seems very promising. In this pape...

This paper presents the QoS differentiated Adaptive Scheduled Optical Burst Switching (QAS-OBS) paradigm that efficiently supports dynamic grid applications. (QAS-OBS) paradigm enables differentiated-services optical burst switching via two-way reservation and adaptive QoS control in distribute wavelength-routed networks. Based on the network loading status, the edge nodes dynamically optimize ...

By developing the new services such as VoIP and Videoconference, using a mechanism is needed to support the quality of service of the application programs. Different models have been presented to guarantee the quality of service. Among these, the differentiated services can be mentioned which was presented by IETF. In the architecture of the differentiated services, no admission control mechani...

We propose and analyze a methodology for providing absolute differentiated services with statistical performance guarantees for real-time applications in networks that use class-based (as opposed to flow-aware) staticpriority schedulers. We develop a method that can be used to derive statistical delay guarantees in a flow-unaware fashion. Traditionally, both deterministic and statistical delay ...