Multi-Vendor Experimental Validation of an Open Source QoT Estimator for Optical Networks

Filer, Mark; Cantono, Mattia; Ferrari, Alessio; Grammel, Gert; Galimberti, Gabriele; Curri, Vittorio

doi:10.1109/jlt.2018.2818406

Cited by 121 publications

(69 citation statements)

References 28 publications

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Section: A Optical-layer Transport Controlmentioning

confidence: 99%

“…A recent initiative in this area is Facebook's collaborative [36], and recently reported validation results in large-scale testbeds [37], [38]. In particular, [38] reports the GNPY validation in a mixed-fiber test-bed network at Microsoft labs in which commercial transceivers from eight different vendors operated in the Cband achieve propagation distances up to 1945 km. The Open Networking Foundation (ONF) recently commenced the Open and Disaggregated Transport Network (ODTN) project [39] as an operator-led initiative to build a reference implantation for data center interconnections using disaggregated optical equipment, open and common standards, and open source software.…”

Section: A Optical-layer Transport Controlmentioning

confidence: 99%

See 1 more Smart Citation

Open-Source Network Optimization Software in the Open SDN/NFV Transport Ecosystem

Garrich

Moreno-Muro

Bueno-Delgado

et al. 2019

J. Lightwave Technol.

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Transport ecosystems that combine Software Defined Networking (SDN) and Network Function Virtualization (NFV) are characterized by an unprecedented network control and resource dynamicity. Manual optimization is unmanageable. In this context, open systems that manage and orchestrate SDN/NFV-enabled networks offer programming frameworks that abstract the low-level particularities in the data-plane forwarding devices and in the hardware appliances that provide the IT resources. Although these open systems present notable complexity, their programming abstractions promote a client layer where third-party applications can provide different functionalities thus enabling Optimization-as-a-Service (OaaS) business opportunities. In this paper, we cover open-source optimization software initiatives for offline planning and online provisioning and orchestration of SDN/NFV networks. With this goal in mind, we first focus on open software (and framework) initiatives through a set of realistic use cases that require optimization in multi-layer optical transport scenarios and ecosystems that combine transport with IT resources. The importance of a joint optimization of both network and IT domains is emphasized, a new paradigm triggered by SDN/NFV technologies. We discuss the theoretical limits to algorithm performances, and review available open-source frameworks for problem modelling that enable the interaction with solvers. Finally we focus on the Net2Plan open-source network planning tool, a Java-based software that suitably embraces the multiple features required in the optimization of joint transport network and IT resource SDN/NFV ecosystems. Recent works based on Net2Plan are reviewed to illustrate its suitability for rapid algorithm prototyping, and for interaction with SDN/NFV-enabled networks.

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Section: A Optical-layer Transport Controlmentioning

confidence: 99%

Section: A Optical-layer Transport Controlmentioning

confidence: 99%

Open-Source Network Optimization Software in the Open SDN/NFV Transport Ecosystem

Garrich

Moreno-Muro

Bueno-Delgado

et al. 2019

J. Lightwave Technol.

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“…The Telecom Infrastructure Project [11] proposes GNPY open-source framework [12], to estimate the OSNR by applying the Gaussian Noise model [13]. Recently, validation results were reported in large-scale testbeds [15]. In our study, Net2Plan is enriched with GNPYinspired computation [16], for estimating the contribution to OSNR coming from nonlinear impairments.…”

Section: Proposal: Minimum Information Required For Network Modelsmentioning

confidence: 99%

Gap Analysis on Open Models for Partially-Disaggregated SDN Optical Transport Environments

Garrich¹,

San-Nicolás-Martínez²,

Moreno-Muro³

et al. 2019

Optical Fiber Communication Conference (OFC) 2019

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“…This allows for building software-based reliable estimations of diverse quality of transmission metrics enabling physical layer aware design and management of optical networks. In particular, among the figures of merit, as shown in [22,23], we take into account the signal-to-noise ratio (SNR), which is defined as:…”

Section: Network Abstraction In Open Optical Networkmentioning

confidence: 99%

“…As shown in Section 5.2, NLI estimation in the QoT-E layer of SNAP is a crucial point when evaluating network capacity. There, NLI estimation was accomplished using the IGN model, which has been proved to deliver accurate and reliable results [23]. However, different versions of the model exist in literature trading off between accuracy and computational complexity.…”

Section: Qot-e Layer Analysismentioning

confidence: 99%

Statistical Assessment of Open Optical Networks

et al. 2019

Self Cite

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In order to cope with the increase of the final user traffic, operators and vendors are pushing towards physical layer aware networking as a way to maximize the network capacity. To this aim, optical networks are becoming more and more open by exposing physical parameters enabling fast and reliable estimation of the lightpath quality of transmission. This comes in handy not only from the point of view of the planning and managing of the optical paths but also on a more general picture of the whole optical network performance. In this work, the Statistical Network Assessment Process (SNAP) is presented. SNAP is an algorithm allowing for estimating different network metrics such as blocking probability or link saturation, by generating traffic requests on a graph abstraction of the physical layer. Being aware of the physical layer parameters and transceiver technologies enables assessing their impact on high level network figures of merit. Together with a detailed description of the algorithm, we present a comprehensive review of several results on the networking impact of multirate transceivers, flex-grid spectral allocation as a means to finely exploit lightpath capacity and of different Space Division Multiplexing (SDM) solutions.

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Multi-Vendor Experimental Validation of an Open Source QoT Estimator for Optical Networks

Cited by 121 publications

References 28 publications

Open-Source Network Optimization Software in the Open SDN/NFV Transport Ecosystem

Open-Source Network Optimization Software in the Open SDN/NFV Transport Ecosystem

Gap Analysis on Open Models for Partially-Disaggregated SDN Optical Transport Environments

Statistical Assessment of Open Optical Networks

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