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Dynamic QoS Management in the Internet

Rares Serban 1
1 PLANETE - Protocols and applications for the Internet
Inria Grenoble - Rhône-Alpes, CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : All applications used in a company are designed for Internet support. Some of these applications (e.g., VoIP, teleworking) request QoS mechanisms in the network to assure their good behavior. Each QoS mechanism is provisioned in function of SLA (Service Level Agreement) established between user/application and ISPs (Internet Service Provider). The QoS management role is to preserve all specifications from SLA during the contracts' period. The QoS management could be static or dynamic. In the static case, the network QoS management is done by the network administrator, using manual tuning work based on trial-and-error process, during a large scale of time. The dynamic QoS management is based on QoS automated and adaptable mechanismes for a flexible and efficient management of the network resources. We consider in this thesis the following components of the dynamic management of the network resources: signaling protocols, algorithms of resource allocation and admission control, network monitoring mechanisms and QoS trade mechanisms among multiple network domains. We propose criteria classifications for Internet QoS signaling protocols and we analyse using this classification the most used QoS signaling protocols. We study the impact of the service level parameters (e.g., delay, jitter, bandwidth, packet loss) and the low level parametres/network parameters of different QoS mechanism implemented for Linux Diffserv network. Using a Linux Diffserv network we demonstrate that the static QoS management in some cases is not efficient. We propose a dynamic resource allocation mechanism (DRAM) for the core routers. We propose with our algorithm different sharing resources rules.
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Contributor : Estelle Nivault <>
Submitted on : Friday, July 31, 2009 - 2:33:38 PM
Last modification on : Thursday, March 5, 2020 - 6:50:28 PM
Long-term archiving on: : Monday, October 15, 2012 - 3:55:51 PM


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  • HAL Id : tel-00408686, version 1



Rares Serban. Dynamic QoS Management in the Internet. Networking and Internet Architecture [cs.NI]. Université de Nice Sophia Antipolis, 2003. English. ⟨tel-00408686⟩



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