Topic
Service-level agreement
About: Service-level agreement is a research topic. Over the lifetime, 4358 publications have been published within this topic receiving 75333 citations. The topic is also known as: SLA.
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Patent•
08 Nov 2001
TL;DR: A method and apparatus for automated generation of a service-level agreement delay value and monitoring of a network is presented in this paper, where service level agreement delay values are generated by calculating a path-delay and standard deviation for a path through the network.
Abstract: A method and apparatus for automated generation of a service
level agreement delay value and monitoring of a network Service
level agreement delay values are generated by calculating a path
delay and standard deviation for a path through the network A
confidence interval is determined for the path delay using the
standard deviation The service level agreement delay value is
generated from the path delay and the confidence interval The
network is subsequently monitored in order to predict and track
violations of the service level agreement delay value The
subsequent monitoring of the network is performed for both trunks
and paths within the network
48 citations
30 Aug 1999
TL;DR: In this paper, the authors present the underlying concepts for the identification and specification of Service Level Agreements (SLA) based on lessons learned from empirical research and a description and clarification is given of these SLA concepts.
Abstract: Over the last ten years the primary business processes of many organisations have become strongly dependent on IT systems. As a consequence the integration of IT systems into organisations, and in particular the subsequent exploitation and operation support activities, have become of utmost importance. The area of IT exploitation and operation is known as Service Management and covers activities such as performance and availability support, end-user and help desk support, education, and technical operation. One of the main concepts of Service Management is the Service Level Agreement (SLA). The purpose of a SLA has recently shifted from being a financial contract towards an instrument for the management of the customer's expectations. Managing customer's expectations is based on the definition of services, the specification of service levels agreements and the design and implementation of service processes. This paper presents the underlying concepts for the identification and specification of Service Level Agreements. Based on lessons learned from empirical research a description and clarification is given of these SLA concepts.
48 citations
TL;DR: This paper explores the use of Information-Centric Networking to support management operations in IoT deployments, presenting the design of a flexible architecture that allows the appropriate operation of IoT devices within a delimited ICN network domain.
47 citations
01 Jul 2009
TL;DR: A novel agent-based framework is presented which utilises the agents' ability of negotiation, interaction, and cooperation to facilitate autonomous SLA management in the context of service composition provision and results from simulations show that by integrating agents and web services the framework can address issues ofSLA management drawn from sophisticated service composition scenarios.
Abstract: In the web services environment, service level agreements (SLA) refers to mutually agreed understandings and expectations between service consumers and providers on the service provision. Although management of SLA is critical to wide adoption of web services technologies in the real world, support for it is very limited nowadays, especially in web service composition scenarios. There lacks adequate frameworks and technologies supporting various SLA operations such as SLA formation, enforcement, and recovery. This paper presents a novel agent-based framework which utilises the agents' ability of negotiation, interaction, and cooperation to facilitate autonomous SLA management in the context of service composition provision. Based on this framework, mechanisms for autonomous SLA operations are proposed and discussed. Results from simulations show that by integrating agents and web services the framework can address issues of SLA management drawn from sophisticated service composition scenarios.
47 citations
25 Nov 2009
TL;DR: An approach to NFP-based ranking of WSs providing support for semantic mediation, consideration of expressive NFP descriptions both on provider and client side, and novel matching functions for handling either quantitative or qualitative NFPs is introduced.
Abstract: Service discovery is a key activity to actually identify the Web services (WSs) to be invoked and composed. Since it is likely that more than one service fulfill a set of user requirements, some ranking mechanisms based on non-functional properties (NFPs) are needed to support automatic or semi-automatic selection.
This paper introduces an approach to NFP-based ranking of WSs providing support for semantic mediation, consideration of expressive NFP descriptions both on provider and client side, and novel matching functions for handling either quantitative or qualitative NFPs. The approach has been implemented in a ranker that integrates reasoning techniques with algorithmic ones in order to overcome current and intrinsic limitations of semantic Web technologies and to provide algorithmic techniques with more flexibility. Moreover, to the best of our knowledge, this paper presents the first experimental results related to NFP-based ranking of WSs considering a significant number of expressive NFP descriptions, showing the effectiveness of the approach.
47 citations