Jordi Perelló

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We propose a protocol enhancement to manage the power state of optoelectronic interfaces in automatically reconfigurable optical networks. For dynamic traffic scenarios 67% of energy savings have been estimated for the optoelectronic interfaces. OCIS codes: (060.4250) Networks; (060.4510) Optical communications.
Core optical networks using reconfigurable optical switches and tunable lasers appear to be on the road towards widespread deployment and could evolve to all-optical mesh networks in the coming future. Considering the impact of physical layer impairments in the planning and operation of all-optical (and translucent) networks is the main focus of the DICONET(More)
We demonstrate and compare distributed and centralized impairment-aware control plane schemes for transparent optical networks with dynamic traffic. Experimental results show that distributed scheme yields one fifth of setup time required by previously reported alternatives. c © 2010 Optical Society of America OCIS codes: (060.4250) Networks; (060.4510)(More)
We propose GMPLS protocol enhancements enabling dynamic power state management of optoelectronic network devices for setup-time-aware differentiated connection provisioning. Daily energy savings of 56% are demonstrated in a Pan-European-like network compared to always on scenarios. OCIS codes: (060.4250) Networks; (060.4510) Optical communications.
Optical network virtualisation has recently become a hot topic among the research community due to its potential to enable the shaping of the Infrastructure as a Service (IaaS) concept. A major challenge that arises of paramount importance when virtualising a network is the so called Virtual Network (VN) embedding problem. While this problem has been(More)
This paper presents Integer Linear Programming (ILP) formulations to optimally allocate Virtual Optical Networks (VONs) over a transparent optical network substrate. These formulations serve the purpose of building either completely transparent VONs or opaque ones, where electrical termination capabilities are assumed at each virtual network node. In(More)
The spectrum-sliced elastic optical path network (SLICE) architecture has been presented as an efficient solution for flexible bandwidth allocation in optical networks. An homologous problem to the classical Routing and Wavelength Assignment (RWA) arises in such an architecture, called Routing and Spectrum Assignment (RSA). Imposed by current transmission(More)
Optical packet switching (OPS) can enhance the performance of data center networks (DCNs)by providing fast and large-capacity switching capability. Benefiting from the software-defined networking (SDN) control plane, which could update the look-up-table (LUT) of the OPS, virtual DCNs can be flexibly created and reconfigured. In this work, we have(More)
In the Hierarchical Path Computation Element (H-PCE) architecture, an optimum end-to-end path is computed using a hierarchical relationship among PCEs. An H-PCE-based path computation procedure provides low network blocking probability meanwhile it results on a great amount of control overhead messages. In this paper we propose a hybrid path computation(More)