The purpose of autonomic networking is to manage the business and technical complexity of networked components and systems. However, the lack of a common lingua franca makes it impossible to use vendor-specific network management data to ascertain the state of the network at any given time. Furthermore, the tools used to analyze management data are all different, and hence require different data in different formats. This complicates the construction of context from diverse information sources. This paper describes a new version of the DEN-ng context-aware policy model, which is part of the FOCALE autonomic network architecture. This model has been built using three guiding principles: (1) both the context model and the policy model are rooted in information models, so that they can govern managed entities, (2) each model is expressly constructed to facilitate the generation of ontologies, so that
The Policy Expert Group of the Autonomic Communications Forum is working to enhance policy to enable flexible control of self-governed systems. The initial effort focuses on proposed enhancements to the DEN-ng policy model to serve as a baseline from which the ACF Policy Model can be developed . This enhanced policy model incorporates traditional (eventcondition-action) and deontic policy representations for policy rules, and provides a modular distributed structure for policy applications.
DEN-ng Policy Model Core FrameworkPolicies commonly follow a standard eventcondition-action (ECA) model. A simplified conceptual model of an ECA policy rule works as follows: specified events are monitored, and these events are used to trigger the evaluation of the conditions of one or more policy rules. If the conditions of a policy rule are matched, then one or more policy actions specified by that policy rule may be executed. If the conditions are not matched, one or more alternative policy actions that are optionally specified by that policy rule may instead be executed. Figure 1 shows the core framework of the new DEN-ng policy model (note that this is different from the DEN-ng policy model described in [4], but the same as that described in [32]). A PolicyConcept is an Fifth IEEE Workshop on Engineering of Autonomic and Autonomous Systems 978-0-7695-3140-3/08 $25.00
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.