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Lookup NU author(s): Dr Carlos Molina-Jimenez, Emeritus Professor Santosh Shrivastava
Monitoring of contractual Service Level Agreements (SLAs) between providers of services over the Internet and consumers is concerned with the collection of statistical metrics about the performance of a service to evaluate whether a provider complies with the level of Quality of the Service (QoS) that the consumer expects. Such monitoring is frequently required to be carried out with the help of third parties to ensure that the results are trusted both by the provider and consumer. The aim of this paper is to bring to the system designer’s attention the fundamental issues that monitoring of contractual SLAs involves: SLA specification, separation of the computation and communication infrastructure of the provider, service points of presence, metric collection approaches, measurement service and evaluation and violation detection service. The paper develops an architecture and give reasons why currently it is practicable to offer guaranteed QoS only to consumers sharing Internet Service Providers (ISPs) directly with the service provider.
Author(s): Molina-Jimenez C, Shrivastava SK, Crowcroft J, Gevros P
Publication type: Report
Publication status: Published
Series Title: School of Computing Science Technical Report Series
Year: 2004
Pages: 17
Print publication date: 01/04/2004
Source Publication Date: April 2004
Report Number: 835
Institution: School of Computing Science, University of Newcastle upon Tyne
Place Published: Newcastle upon Tyne
URL: http://www.cs.ncl.ac.uk/publications/trs/papers/835.pdf
