TERENA posters
TERENA Networking Conference 2006 (15 - 18 May 2006, Catania, Italy)
SNE participating members: Freek Dijkstra, Paola Grosso, Cees de Laat, JP Velders
Poster abstract submission deadline: 20 April 2006
Length of abstract: 100-250 words
NDL poster
Authors:
Jeroen van der Ham, Freek Dijkstra, Paola Grosso, Cees de Laat
Kruislaan 403, Amsterdam
Universiteit van Amsterdam
Abstract:
Several research networks around the world are working at implementing hybrid networks. These networks provide end-users with traditional routed IP services, but also lightpaths. To automate lightpath provisioning, broker systems must have topology information, both intra and inter-domain. This requires that the information is described in a computer-readable format.
We have developed the Network Description Language (NDL), based on RDF, a semantic web technique. This language can be used to describe hybrid networks, so that different administrative domains can share and correlate the topology information. It supports the end-user to express a lightpath reservation request, and helps the service provider to validate the feasibility of a request. Because the topology information can be correlated across domains, NDL allows for automatic generation of network maps that can be shared among providers.
Our first application ground is GLIF, the Global Lambda Integrated Facility, a collaboration promoting cooperation in the field of Lambda Networking. Automatic provisioning is an important issue for the GLIF members, and several supporting tools are in development. However, these tools lack a common network description, which NDL can provide.
Current word count:
178 words
Authors:
Freek Dijkstra, Paola Grosso, Cees de Laat, Jan-Philip Velders, Li XU
Kruislaan 403, Amsterdam
Universiteit van Amsterdam
Abstract:
StarPlane is a research project that will investigate sub-second topology changes and lightpath provisioning in the
SURFnet6 network in The Netherlands. The
SURFnet6 network is a typical hybrid network: it provides the end user with traditional IP services, whilst also offering new optical or photonic technologies (i.e.
lightpaths,
OPN's).
SURFnet6 is composed of five ring-like subnetworks connecting the various research and academic institutions in the country; one of these rings connects the five locations that host the DAS-3 distributed supercomputing cluster. The DAS-3 nodes can connect to the photonic portion of
SURFnet6 using different logical network topologies that satisfy the needs of the application at hand: the application requests its preferred topology through the management plane developed by
StarPlane, which in turn -constraints permitting- will instruct the appropriate devices to reconfigure. In this poster we will outline 1) which applications benefit from different logical topologies of dedicated and dynamic lightpaths and their requirements for
StarPlane operation; 2) the network architecture that
StarPlane operates on and in particular the Nortel CPL (Common Photonic Layer) devices that are installed in
SURFnet6; 3) the future design of the management plane and its interaction with the application on one side and the photonic network devices in
SURFnet6 on the other.
Current word count:
206 words
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