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A~protocol for QoS contract negotiation and its implementation using web Services

Hélia Pouyllau 1 Stefan Haar 2
2 DISTRIBCOM - Distributed and Iterative Algorithms for the Management of Telecommunications Systems
IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires, Inria Rennes – Bretagne Atlantique
Abstract : The way Internet is used changes: demand grows for critical services that cross several provider networks; guaranteeing a required end-to-end Quality of Service (QoS) across several networks becomes a challenge. Some critical services (e.g. video-conference, VPN etc.) can not be satisfied in a best effort fashion. The use of QoS contracts (Service Level Agreements, SLAs) is effective for management of such services. However, the problem of meeting end-to-end QoS requirement remains: no centralized entity can compute overall QoS for chains of contracts, and a fortiori, such contract chains can not be optimized centrally. Thus, the following problem has to be solved: given an end-to-end QoS request and collections of available SLAs on each participating domain, establish an end-to-end contract committing a chain of providers and giving optimal service under most reliable guarantees available.
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https://hal.inria.fr/inria-00638309
Contributor : Stefan Haar <>
Submitted on : Friday, November 4, 2011 - 3:10:04 PM
Last modification on : Wednesday, June 16, 2021 - 3:41:54 AM

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Hélia Pouyllau, Stefan Haar. A~protocol for QoS contract negotiation and its implementation using web Services. Proceedings of the 6th International Conference on Web Services (ICWS'07), 2007, Salt Lake City, Utah, USA, United States. pp.168-175, ⟨10.1109/ICWS.2007.14⟩. ⟨inria-00638309⟩

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