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Policy conflict analysis for diffserv quality of service management

Charalambides, M.; Flegkas, P.; Pavlou, G.; Rubio-Loyola, J.; Bandara, A. K.; Lupu, E. C.; Russo, A.; Dulay, N. and Sloman, M. (2009). Policy conflict analysis for diffserv quality of service management. IEEE Transactions on Network and Service Management, 6(1) pp. 15–30.

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Policy-based management provides the ability to (re-)configure differentiated services networks so that desired Quality of Service (QoS) goals are achieved. This requires implementing network provisioning decisions, performing admission control, and adapting bandwidth allocation to emerging traffic demands. A policy-based approach facilitates flexibility and adaptability as policies can be dynamically changed without modifying the underlying implementation. However, inconsistencies may arise in the policy specification. In this paper we provide a comprehensive set of QoS policies for managing Differentiated Services (DiffServ) networks, and classify the possible conflicts that can arise between them. We demonstrate the use of Event Calculus and formal reasoning for the analysis of both static and dynamic conflicts in a semi-automated fashion. In addition, we present a conflict analysis tool that provides network administrators with a user-friendly environment for determining and resolving potential inconsistencies. The tool has been extensively tested with large numbers of policies over a range of conflict types.

Item Type: Journal Article
Copyright Holders: 2009 IEEE
ISSN: 1932-4537
Keywords: QoS management policies; conflict detection; dynamic conflict resolution;
Academic Unit/Department: Mathematics, Computing and Technology > Computing & Communications
Interdisciplinary Research Centre: Centre for Research in Computing (CRC)
Item ID: 18979
Depositing User: Arosha Bandara
Date Deposited: 19 Nov 2009 14:08
Last Modified: 20 Jan 2014 03:56
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