NDLI: Service overlay networks: slas, qos and bandwidth provisioning.

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Service overlay networks: slas, qos and bandwidth provisioning.

Content Provider	CiteSeerX
Author	Zhi-Li Zhang Ý Yiwei Thomas Hou Þ Zhenhai Duan Ý
Abstract	We advocate the notion of service overlay network (SON) as an effective means to address some of the issues, in particular, end-to-end QoS, plaguing the current Internet, and to facilitate the creation and deployment of value-added Internet services such as VoIP, Video-on-Demand, and other emerging QoS-sensitive services. A SON purchases bandwidth with certain QoS guarantees from individual network domains via bilateral service level agreement (SLA) to build a logical end-to-end service delivery infrastructure on top of existing data transport networks. Via a service contract, users directly pay the SON provider for using the valueadded services provided by the SON. In this paper we study the bandwidth provisioning problem for a service overlay network which is critical to the cost recovery in deploying and operating value-added services over the SON. We mathematically formulate the bandwidth provisioning problem, taking into account various factors such as SLA, service QoS, traffic demand distributions, and bandwidth costs. Analytical models and approximate solutions are developed for both static and dynamic bandwidth provisioning. Numerical studies are also performed to illustrate the properties of the proposed solutions and demonstrate the effect of traffic demand distributions and bandwidth costs on the bandwidth provisioning of a SON. 1
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Access Restriction	Open
Subject Keyword	Account Various Factor Logical End-to-end Service Delivery Infrastructure Individual Network Domain Bandwidth Cost Service Qos Bilateral Service Level Agreement Analytical Model Data Transport Network Cost Recovery Current Internet Bandwidth Provisioning Value-added Internet Service Value-added Service Son Provider Valueadded Service Traffic Demand Distribution Bandwidth Provisioning Problem Dynamic Bandwidth Provisioning Service Overlay Network Son Purchase Approximate Solution Service Contract Certain Qos Guarantee Qos-sensitive Service Numerical Study Effective Mean End-to-end Qos
Content Type	Text
Resource Type	Article

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