2,468 research outputs found
Accessing OSI Managed Objects from ANSAware
This paper presents a mechanism allowing an ODP compliant distributed system, ANSA, to access OSI network management objects as if they were ANSA objects. It defines a mapping from the OSI object model to the ANSA object model, and it specifies how an adapter implements this mapping
An Analysis of the OSI Systems Management Architecture from an ODP Perspective
This paper analyses the OSI Systems Management Architecture (SMA) in terms of the RM-ODP concepts and architecture. It explains why ISO and ITU are considering new modelling techniques for implementing distributed systems management. In the information viewpoint, these new techniques might be inspired from GDMO. The paper also examines the use of automatic translation tools (GDMO to CORBA IDL translators) to integrate existing management agents within the future Open Distributed Management Architecture (ODMA)
A network QoS management architecture for virtualization environments
Network quality of service (QoS) and its management are concerned with providing, guaranteeing and reporting properties of data flows within computer networks. For the past two decades, virtualization has been becoming a very popular tool in data centres, yet, without network QoS management capabilities.
With virtualization, the management focus shifts from physical components and topologies, towards virtual infrastructures (VI) and their purposes. VIs are designed and managed as independent isolated entities. Without network QoS management capabilities, VIs cannot offer the same services and service levels as physical infrastructures can, leaving VIs at a disadvantage with respect to applicability and efficiency.
This thesis closes this gap and develops a management architecture, enabling network QoS management in virtulization environments.
First, requirements are dervied, based on real world scenarios, yielding a validation reference for the proposed architecture. After that, a life cycle for VIs and a taxonomy for network links and virtual components are introduced, to arrange the network QoS management task with the general management of virtualization environments and enabling the creation of technology specific adaptors for integrating the technologies and sub-services used in virtualization environments.
The core aspect, shaping the proposed management architecture, is a management loop and its corresponding strategy for identifying and ordering sub-tasks.
Finally, a prototypical implementation showcases that the presented management approach is suited for network QoS management and enforcement in virtualization environments.
The architecture fulfils its purpose, fulfilling all identified requirements. Ultimately, network QoS management is one amongst many aspects to management in virtualization environments and the herin presented architecture shows interfaces to other management areas, where integration is left as future work.Verwaltungsaufgaben fĂŒr NetzdienstgĂŒte umfassen das Bereitstellen, Sichern und Berichten von Flusseigenschaften in Rechnernetzen. WĂ€hrend der letzen zwei Jahrzehnte entwickelte sich Virtualisierung zu einer SchlĂŒsseltechnologie fĂŒr Rechenzentren, bisher ohne Möglichkeiten zum Verwalten der NetzdienstgĂŒte.
Der Einsatz von Virtualisierung verschiebt den Fokus beim Betrieb von Rechenzentren weg von physischen Komponenten und Netzen, hin zu virtuellen Infrastrukturen (VI) und ihren Einsatzzwecken. VIs werden als unabhĂ€ngige, voneinander isolierte Einheiten entwickelt und verwaltet. Ohne NetzdienstgĂŒte, sind VIs nicht so vielseitig und effizient einsetzbar wie physische Aufbauten.
Diese Arbeit schlieĂt diese LĂŒcke mit der Entwicklung einer Managementarchitektur zur Verwaltung der NetzdienstgĂŒte in Virtualisierungsumgebungen.
ZunĂ€chst werden Anforderungen aus realen Szenarios abgeleitet, mit denen Architekturen bewertet werden können. Zur Abgrenzung der speziellen Aufgabe NetzdienstgĂŒteverwaltung innerhalb des allgemeinen Managementproblems, wird anschlieĂend ein Lebenszyklusmodell fĂŒr VIs vorgestellt. Die Entwicklung einer Taxonomie fĂŒr Kopplungen und Komponenten ermöglicht technologiespezifische Adaptoren zur Integration von in Virtualisierungsumgebungen eingesetzten Technologien.
Kerngedanke hinter der entwickelten Architektur ist eine RĂŒckkopplungsschleife und ihre einhergehende Methode zur Strukturierung und Anordnung von Teilproblemen.
AbschlieĂend zeigt eine prototypische Implementierung, dass dieser Ansatz fĂŒr Verwaltung und Durchsetzung von NetzdienstgĂŒte in Virtualisierungsumgebungen geeignet ist. Die Architektur kann ihren Zweck sowie die gestellten Anforderungen erfĂŒllen. Schlussendlich ist NetzdienstgĂŒte ein Bereich von vielen beim Betrieb von Virtualisierungsumgebungen. Die Architektur zeigt Schnittstellen zu anderen Bereichen auf, deren Integration zukĂŒnftigen Arbeiten ĂŒberlassen bleibt
IT Management Using a Heavyweight CIM Ontology
This paper presents an approach for ontology-based IT management based on a heavyweight (formal) ontology using the Web Ontology Language (OWL). The ontology comprises a complete OWL representation of the Common Information Model (CIM) and management rules defined in the Semantic Web Rule Language (SWRL). The ontology not only models the managed system types, but a runtime system dynamically updates model instances in the ontology that reflect values of managed system entities. This allows the evalution of rules that take into account both model and model instances. A reaction module uses the CIM interface of the managed system to invoke CIM methods according to rule evaluation results, thus resulting in automated management. In order to ensure the consistency of the ontology when changes are performed, belief change theory is employed
A mid-level framework for independent network services configuration management
Tese doutoramento do Programa Doutoral em TelecomunicaçÔesDecades of evolution in communication networkâs resulted in a high diversity of solutions,
not only in terms of network elements but also in terms of the way they are managed.
From a management perspective, having heterogeneous elements was a feasible scenario
over the last decades, where management activities were mostly considered as additional
features. However, with the most recent advances on network technology, that includes
proposals for future Internet as well as requirements for automation, scale and efficiency,
new management methods are required and integrated network management became an
essential issue.
Most recent solutions aiming to integrate the management of heterogeneous network
elements, rely on the application of semantic data translations to obtain a common representation
between heterogeneous managed elements, thus enabling their management
integration. However, the realization of semantic translations is very complex to be effectively
achieved, requiring extensive processing of data to find equivalent representation,
besides requiring the administratorâs intervention to create and validate conversions,
since contemporary data models lack a formal semantic representation.
From these constrains a research question arose: Is it possible to integrate the con g-
uration management of heterogeneous network elements overcoming the use of manage-
ment translations? In this thesis the author uses a network service abstraction to propose
a framework for network service management, which comprehends the two essential management
operations: monitoring and configuring. This thesis focus on describing and
experimenting the subsystem responsible for the network services configurations management,
named Mid-level Network Service Configuration (MiNSC), being the thesis
most important contribution.
The MiNSC subsystem proposes a new configuration management interface for integrated
network service management based on standard technologies that includes an
universal information model implemented on unique data models. This overcomes the
use of management translations while providing advanced management functionalities,
only available in more advanced research projects, that includes scalability and resilience
improvement methods. Such functionalities are provided by using a two-layer distributed
architecture, as well as over-provisioning of network elements. To demonstrate MiNSCâs
management capabilities, a group of experiments was conducted, that included, configuration
deployment, instance migration and expansion using a DNS management system
as test bed. Since MiNSC represents a new architectural approach, with no direct reference for
a quantitative evaluation, a theoretical analysis was conducted in order to evaluate it
against important integrated network management perspectives. It was concluded that
there is a tendency to apply management translations, being the most straightforward solution
when integrating the management of heterogeneous management interfaces and/or
data models. However, management translations are very complex to be realized, being
its effectiveness questionable for highly heterogeneous environments. The implementation
of MiNSCâs standard configuration management interface provides a simplified
perspective that, by using universal configurations, removes translations from the management
system. Its distributed architecture uses independent/universal configurations
and over-provisioning of network elements to improve the serviceâs resilience and scalability,
enabling as well a more efficient resource management by dynamically allocating
resources as needed
Aplicação do modelo TMN na gerĂȘncia de redes de alta velocidade /
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico
Distributed control of reconfigurable mobile network agents for resource coordination
Includes abstract.Includes bibliographical references.Considering the tremendous growth of internet applications and network resource federation proposed towards future open access network (FOAN), the need to analyze the robustness of the classical signalling mechanisms across multiple network operators cannot be over-emphasized. It is envisaged, there will be additional challenges in meeting the bandwidth requirements and network management...The first objective of this project is to describe the networking environment based on the support for heterogeneity of network components..
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