Using the Network Description Language in Optical Networks

Ham, Jeroen van der; Grosso, Paola; Pol, Ronald van der; Toonk, Andree; Laat, Cees de

doi:10.1109/inm.2007.374784

Cited by 39 publications

(18 citation statements)

References 6 publications

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“…The Network Description Language (NDL) [15] is an information model developed by researchers at the University of Amsterdam. NDL comprises of a series of schemas that categorize information for network topologies, network technology layers, network device configurations, capabilities, and network topology aggregations.…”

Section: Network Description Languagementioning

confidence: 99%

Challenges of an information model for federating virtualized infrastructures

Ham

Papagianni

Stéger

et al. 2011

2011 5th International DMTF Academic Alliance Workshop on Systems and Virtualization Management: Standards and the Cloud (SVM)

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Abstract-Users of the Future Internet will expect seamless and secure access to virtual resources distributed across multiple domains. These federated platforms are the core of the Future Internet. It is clear that information models, and concrete implementation in data models, are necessary prerequisites for all federative operations, information exchanges, and service support.This position paper describes our approach to the development of an information model for federating virtual infrastructures. Our basic assumption is that semantic resource descriptions with context-awareness, in the form of Semantic Web descriptions, better support services in federated platforms. We use our experiences in the development of two ontologies for computer networks and for network monitoring, NDL and MOMENT, to support and guide our development. The requirements of our envisaged Information and Data models are driven from a concrete usecase, using PlanetLab and FEDERICA as examples of virtualized platforms in a Future Internet federated environment.

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Section: Network Description Languagementioning

confidence: 99%

Challenges of an information model for federating virtualized infrastructures

Ham

Papagianni

Stéger

et al. 2011

2011 5th International DMTF Academic Alliance Workshop on Systems and Virtualization Management: Standards and the Cloud (SVM)

Self Cite

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“…The Network Description Language [19] approach is based on the Resource Description Framework [15]. The original intent of this effort was to describe physical networks (in particular optical networks) to facilitate inter-domain lambda provisioning [20]. Efforts within the NOVI [10] and the GEYSERS 2 project are underway to extend the language to include the description of virtual networks.…”

Section: Related Workmentioning

confidence: 99%

A Resource Description Language with Vagueness Support for Multi-Provider Cloud Networks

Schaffrath

Schmid

Vaishnavi

et al. 2012

2012 21st International Conference on Computer Communications and Networks (ICCCN)

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Abstract-The concept of CloudNets, virtual networks connecting cloud resources, has recently attracted much interest from both academic as well as business sides. CloudNets can realize the vision of affordable customized infrastructures. In particular, such networks are expected to be offered even in federated environments with multiple providers. Inter-provider communication about requirements or provisioning of truly customized virtual environments however require a powerful flexible resource description language (RDL). While extensibility and expressiveness seem to be natural requirements for such a language, we identify another less intuitive requirement affecting all actors (or stakeholders) in their economic benefits: the possibility to omit arbitrary specification details and to remain vague while at the same time describing real world scenarios. Not only may a description language ignoring this constraint easily become too bulky to use, it is also likely to force players to focus on details they are not interested in or lack the knowledge to map their actual requirements to. This paper identifies detailed requirements for an RDL to allow for topology and requirement communication in business scenarios. Furthermore, we present the FleRD flexible resource description language for multi-provider virtual network architectures. FleRD is fully incorporated in our own CloudNet prototype architecture. I. INTRODUCTIONVirtualization has become an important paradigm in the development of today's Internet. Decoupling service applications and virtual components from the constraints of the underlying (substrate) physical infrastructures, it facilitates efficient use of the given resources and eases the provisioning and maintenance of a better service quality. The convergence of node and link virtualization technologies opens many new possibilities. Many research efforts (e.g., in the context of testbed virtualization projects [7], [8]) have been started to build isolated virtual service networks over the same physical infrastructure. In the future, customers will be able to quickly request and use arbitrarily specified CloudNets [6], virtual networks connecting cloud resources. These networks are mapped to (and hosted by) the shared physical substrate resources.In order to surpass the provisioning of simple virtual network topologies and to leverage the potential of truly customized networks, efforts to find flexible ways of describing CloudNets and their properties are underway (e.g., [2], [18]). Properties range from service level over geographical down to embedding constraints (see e.g., [4]) and may possibly even include measurement results. Some of the description languages take ontological approaches in the context of automated reasoning. In contrast, we consider a business scenario in which the language is used for inter-provider communication.

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“…NDL [20] provides such a representation, and as it is defined in Extensible Markup Language (XML) and based on the Resource Description Framework (RDF). Whilst NDL has primarily been targeted at optical networks, the schemas are portable to wired and wireless topologies.…”

Section: Representing Network Configurations In a Machine-readable Waymentioning

confidence: 99%

Evolving Robust Networks for Systems-of-Systems

Aitken

Alexander

Kelly

et al. 2012

Search Based Software Engineering

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Abstract. Software systems that rely on ad-hoc networks are becoming increasingly complex and increasingly prevalent. Some of these systems provide vital functionality to military operations, emergency services and disaster relief; such systems may have significant impact on the safety of people involved in those operations. It is therefore important that those networks support critical software requirements, including those for latency of packet transfer. If a network ceases to meet the software's requirements (e.g. due to a link failure) then engineers must be able to understand it well enough to reconfigure the network and restore it to a requirement-satisfying state. Given a complex network, it is difficult for a human to do this under time pressure. In this paper we present a search-based tool which takes a network defined using the Network Description Language (NDL), annotated with a set of network-hosted applications and a set of latency requirements between each. We then evolve variants of the network configuration which meet the requirements and are robust to single link failures. We use network calculus tools to get a fast, conservative evaluation of whether a given network meets its requirements. We demonstrate that this approach is viable, designs networks much faster than a human engineer could, and is superior to a random generate-and-test approach.

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Using the Network Description Language in Optical Networks

Cited by 39 publications

References 6 publications

Challenges of an information model for federating virtualized infrastructures

Challenges of an information model for federating virtualized infrastructures

A Resource Description Language with Vagueness Support for Multi-Provider Cloud Networks

Evolving Robust Networks for Systems-of-Systems

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