Policy-Based Network Management: Solutions for the Next by John Strassner

By John Strassner

Policy-Based community administration (PBNM) platforms let enterprise ideas and systems to be translated into regulations that configure and regulate the community and its providers. those that deal with community platforms are conscious that this method can profit either community administration in addition to the advance of purposes that use community companies; notwithstanding, the main points surrounding those structures has been obscured via advertising hype, a variety of acronyms, and theoretical complexities. Policy-Based community administration: options for the following iteration cuts in the course of the hype surrounding PBNM and makes it approachable when you really want to appreciate what it has to supply. the writer, founding father of the IETF coverage Framework operating team, discusses method requisites, info types, and method elements for Policy-Based administration. He additionally offer practitioners with a source for constructing and/or incorporating PBNM platforms. As community structures develop into greater and extra complicated, growing rules for them has turn into a vital step within the administration of community structures, and this e-book is a welcome boost to this interesting strategy. * offers a very new method of PBNM that unites the enterprise, procedure, and implementation spheres.* because the foundation for examples and dialogue, makes use of the DEN-ng info version, an easy-to-understand open common tied heavily to eTOM and NGOSS.* Introduces the contemplate approach, then examines consider extensions designed to reinforce the constitution of high-level guidelines and their software in a PBNM system.* packed with examples illustrating how regulations are such a lot successfully utilized in a PBNM method and what new instructions PBNM is probably going to take.

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Extra resources for Policy-Based Network Management: Solutions for the Next Generation (The Morgan Kaufmann Series in Networking)

Example text

3 Why An Information Model is Important An information model is more than just a representation of a set of objects. The most important feature of an information model is its ability to describe relationships between managed objects. From this, other types of models and diagrams, such as defining how data flows within the system, can be defined. The information model serves as a normalization layer. , a device has physical ports over which information flows), a framework can be defined that can represent the different features and functions of heterogeneous devices.

The DEN-ng policy model is best thought of as an information model that defines how policy interacts with the rest of the managed environment (which is also represented as an information model). This has three important consequences. First, it was apparent that building a policy information model in isolation of other information models was not going to work. The original DEN specification, as well as CIM, each had many different domains in addition to policy. However, little effort was made to associate policy in detail with these other domains.

For example, think of a service level agreement that specifies availability (which in this example is defined as remote access accessibility without busy signals). S. network versus a connection to a European network), it certainly will not specify availability between different parts of the network. Not only is this too hard to do (and very costly for the service provider), it doesn’t really matter, because the service is specified as an end-to-end service. The enduser does not care what devices or QoS mechanisms are used or what the latency or drop rate is along an intermediate path in the network as long as the service that was contracted for is successfully delivered.

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