A distributed topology information system for optical networks based on the semantic web

Authors:
Jeroen Van Der Ham;Freek Dijkstra;Paola Grosso;Ronald Van Der Pol;Andree Toonk;Cees De Laat
Affiliations:
System and Network Engineering Group, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands and TNO Defence, Security and Safety, Postbus 96864, 2509 JG Den Haag, The Netherla ...;System and Network Engineering Group, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands;System and Network Engineering Group, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands;SARA, Postbus 94613, 1090 GP Amsterdam, The Netherlands;BCNET, 7300 SFU Harbour Centre, Vancouver BC, V6B 5K3, Canada;System and Network Engineering Group, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
Venue:
Optical Switching and Networking
Year:
2008

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Abstract

The research networking community has embraced novel network architectures to provide e-Science applications with dedicated connections instead of shared links. IP and optical services converge in these new infrastructures to form hybrid networks. Lightpaths are the services offered to clients in the optical portion of the network. They are chosen because they guarantee the appropriate QoS in terms of bandwidth and latency. NDL-the Network Description Language-is a data model offering users and providers of lightpaths with a common ontology to describe topology information of hybrid optical networks. The strength of NDL is that it supports a wide range of applications, including pathfinding, visualisation and asset management, via the definition of a common data model to exchange network descriptions. Since NDL is based on the Semantic Web techniques, it is straightforward to relate NDL with application-specific ontologies. In this paper we present the current status of the NDL schemas and its use in several applications.