Conference Paper

Dynamic Policy Analysis and Conflict Resolution for DiffServ Quality of Service Management

Centre for Commun. Syst. Res., Surrey Univ., Guildford
DOI: 10.1109/NOMS.2006.1687560 Conference: Management of Integrated End-to-End Communications and Services, 10th IEEE/IFIP Network Operations and Management Symposium, NOMS 2006, Vancouver, Canada, April 3-7, 2006. Proceedings
Source: DBLP


Policy-based dynamic resource management may involve interaction between independent decision-making components which can lead to conflicts. For example, conflicts can occur between the policies for allocating resources and those setting quotas for users or classes of service. These policy conflicts cannot be detected by static analysis of the policies at specification-time as the conflicts arise from the current state of the resources within the system and so can only be detected at run-time. In this paper we use policies related to quality of service (QoS) provisioning for configuring differentiated services (DiffServ) networks to illustrate techniques for the dynamic detection and resolution of conflicts. Configuration includes implementing network provisioning decisions, performing admission control, and adapting bandwidth allocation dynamically according to emerging traffic demands. We identify possible conflicts between policies that manage the allocation of resources, and we also investigate conflicts that may arise between these policies and higher-level directives refined at the dynamic resource management level, acting as constraints. The paper shows how event calculus can be used to detect conflicts, focusing on the ones that emerge at run-time, and provides an approach for specifying policies to automate conflict resolution. The latter is demonstrated through our initial implementation of a dynamic conflict analysis tool


Available from: Marinos Charalambides
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    • "In this section, we review related work in this area and compare them to our proposed work. Marinos et al. [8] used policies related to Quality of Service (QoS) provisioning for configuring Differentiated Services (DiffServ) networks to illustrate techniques for the dynamic detection and resolution of conflicts. They identify that conflicts may arise between these policies and higher-level directives refined at the dynamic resource management level, acting as constraints. "

    06/2013; 4(2):14-23. DOI:10.4156/ijiip.vol4.issue2.2
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    • "Patterns for the specification of policydriven configurations were first defined in [4]. As part of our future work, we intend to investigate how resilience patterns can be pre-verified for conflicts, possibly using existing solutions and tools for policy analysis [21], [22]. "
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    • "In the policy framework, policy related tasks such as the detection of conflicts between policies are maintained. Several policy conflict detection algorithms have been proposed in previous work [31], [32]. As policies form an inherent part of the inner workings of an AE, the policy framework interacts with all components inside the AE. "
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