Performance analysis for a DiffServ-enabled network: the case of relative service

Bouras, Christos; Sevasti, Afrodite

doi:10.1109/nca.2003.1201179

Cited by 4 publications

(14 citation statements)

References 9 publications

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“…In the AF framework, fair service provisioning means that flows or aggregates sharing the same resources obtain bandwidth in proportion to their contracted guaranteed capacity. In [19] it is shown how classic RED congestion notification is not dependent upon the number of active flows, a conclusion confirmed by our findings in [2,3] where we have also shown that the feedback provided by classic WRED is not very successful in service differentiation. The authors of [19] propose adaptive RED according to which the average queue length is constantly observed and updated.…”

Section: Bandwidth Fairness Achieved By the Af Service Modelsupporting

confidence: 86%

“…This service rate has to be such that in all queues along the AF FEC LSP that the average service rate guarantees included in SLAs with individual customers participating in the specific LSP are not violated. As shown in [2] and in the experimental analysis that follows, the recommended value for C AF is slightly higher than the sum of contracted capacity for the flows belonging to a certain AF FEC LSP.…”

Section: Per-hop Mechanismsmentioning

confidence: 79%

“…Early results of the work presented here are available in [3]. Together with the generic framework of our earlier work [2], the proposed mechanisms and specific configuration guidelines provided here contribute to the realization and practical implementation of AF-based services in production DiffServ-enabled networks. The Relative service and the proposed mechanisms adhere to AF PHB principles and, therefore, for the rest of this paper, the terms Relative and AF service will be used interchangeably.…”

Section: Introductionmentioning

confidence: 83%

“…A more detailed specification of the Relative service can be found in [2]. By definition, the service is provided to individual TCP flows or aggregates of TCP flows as they cross a DiffServ-enabled backbone network.…”

Section: Service Definitionmentioning

confidence: 99%

“…Thus, the advantages of DWRED come with some cost in queuing delay. The resulting average queue size for the generic application of DWRED was shown in [2] . As a conclusion, the application of DWRED results in increased queuing delays when compared with static WRED configurations due to higher average queue sizes.…”

Section: Queuing Behaviourmentioning

confidence: 99%

See 4 more Smart Citations

Performance analysis of relative service using TCP‐aware marking and dynamic WRED

Bouras

Sevasti

2008

Int J Communication

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SUMMARYThe implementation of successful assured forwarding (AF) services according to the DiffServ framework remains a challenging problem today, despite the numerous proposals for assured forwarding per-hopbehaviour (AF PHB) mechanisms and AF-based service implementations. The interaction of the TCP and UDP traffic under an AF-based service and a number of relative issues such as fairness among flows, achievable bandwidth guarantees and qualitative performance have been taken into consideration in this work in order to address the existing limitations. We propose two modules, the TCP-window aware marker (TWAM) and the dynamic WRED (WRED) mechanism for implementing the differentiated services (DiffServ) AF PHB. We provide analytical models and an experimental evaluation in order to demonstrate how they succeed in enhancing the quality, improving the performance and easing the deployment of a production level AF-based service.

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