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Network operators have worked in interoperable scenarios for transport network from several years. The main motivation is to have a rich ecosystem, which encourages the competition to have more efficient network solutions. The bandwidth increment in the transport network puts a lot of pressure to have revenues on an environment where the end-user is willing to pay less and less for the service. Software...
Optical networks are facing increased levels of heterogeneity, from types of services to the range of technologies involved. In this paper, we focus on the inter-domain heterogeneity scenario and consider the case of a set of interconnected network domains, each one using its own optical networking technology (wavelength-routing, optical burst-switching or wavelength-routed optical burst switching)...
Operators are challenged by the new cloud services, which can modify current traffic pattern. This talk presents the Telefonica I+D view on the evolution towards a transport network ready to support cloud services. It explains the reasons why current transport networks are not efficiently design for a cloud environment and it describes the architecture for a cloud-ready network. To show the feasibility...
In recent years, Path Computation Element (PCE) architecture has been standardized as a suitable solution for path computation in multi-domain network scenarios. The Traffic Engineering Database (TED) of the PCE is updated with the information of the control plane. However, there is a delay from the PCE replies to a request, until the TED is updated with the network status information. This delay...
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