An Operator view on the Introduction of White Boxes into Optical Networks

Riccardi, E.; Gunning, P.; Dios, Oa scar Gonzaa lez de; Quagliotti, Marco; López, Vı́ctor; Lord, Andrew

doi:10.1109/jlt.2018.2815266

Cited by 112 publications

(103 citation statements)

References 5 publications

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“…Our reference network is aligned with the ODTN project phase II [5], and corresponds to a partially disaggregated network [6]. Generally, virtualizing an optical network can be performed using a combination of a given device support (that is, hardware support) and/or the use of a virtualization layer (commonly referred to as hypervisor) that extends or emulates such support.…”

Section: Disaggregated Network and Slicing Modelmentioning

confidence: 99%

Enabling Network Slicing Across a Disaggregated Optical Transport Network

Casellas¹,

Giorgetti²,

Morro³

et al. 2019

Optical Fiber Communication Conference (OFC) 2019

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Section: Disaggregated Network and Slicing Modelmentioning

confidence: 99%

Enabling Network Slicing Across a Disaggregated Optical Transport Network

Casellas¹,

Giorgetti²,

Morro³

et al. 2019

Optical Fiber Communication Conference (OFC) 2019

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“…In this sense, network disaggregation is gaining attention and influence as a way to allow lowering the cost of equipment and the power consumption, while increasing the system/network flexibility and breaking with traditional/legacy closed systems based on a set of vendor proprietary implementation [3]- [5]. In fact, different degrees of disaggregation at the optical networking layer are envisioned [4]: (i) partial disaggregation, (ii) full disaggregation based on white boxes, and (iii) full disaggregation based on bare metal blades. Partial disaggregation refers to an optical network infrastructure seen as an analog proprietary black blox featuring wavelength division multiplexing (WDM) and belonging to one vendor, while the transponders can be from many different vendors.…”

Section: Introductionmentioning

confidence: 99%

SDN-Enabled Sliceable Transceivers in Disaggregated Optical Networks

Nadal

Fàbrega

Moreolo

et al. 2019

J. Lightwave Technol.

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We design and implement programmable (SDNenabled) sliceable bandwidth/bitrate variable transceivers (S-BVTs) based on multicarrier modulation (MCM) with direct detection (DD), tailored for disaggregated metro networks. A first level of disaggregation is assessed by considering an S-BVT architecture composed of a set of white box bandwidth/bit rate variable transceivers (BVTs) from multiple manufaturers/providers. An OpenConfig vendor-neutral model is adopted for the implementation of the SDN agents that configure the S-BVTs according to the network requirements/targets. Additionally, a fully disaggregated metro network is envisioned by considering a fixed/flexi-grid dense wavelength division multiplexing (DWDM) network with white box ROADM/OXC nodes. The impact of the filter narrowing effect is assessed considering different network node architectures based on either flexible wavelength selective switches (WSSes) or arrayed waveguide gratings (AWGs). Thanks to the transceiver inherent modularity, flexibility and bit rate variability, up to 8 network nodes can be traversed ensuring a target capacity of 50 Gb/s per slice at a 4.62 • 10 −3 BER. Index Terms-Sliceable bandwith/bitrate variable transceiver (S-BVT), wavelength selective switch (WSS), filter narrowing effect, software defined networking (SDN), disaggregation, optical metro networks.

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“…Recent years have witnessed rapid growth of the speed and volume of traffic driven by novel and broadband (5G) services. In order to accommodate these changes, optical networks are evolving towards a more dynamic, flexible, programmable, and open paradigm, while novel and suitable technologies are being explored and exploited, improving their readiness towards supporting this new paradigm and providing solutions to related challenges [1][2][3][4][5]. In this context, the bandwidth variable transceiver (BVT), with its advanced functionalities and the ability of being sliceable (S-BVT), has assumed an especially relevant role in the research community over the last few years, following the roadmap of optical networks [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Sliceable BVT Evolution Towards Programmable Multi-Tb/s Networking

2019

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The sliceable bandwidth variable transceiver (S-BVT) is a key element in addressing the challenges and evolution of optical networks, and supporting the ever-increasing traffic volume, speed, and dynamicity driven by novel and broadband services and applications. Multiple designs and configurations are possible and are evolving towards supporting multi-Tb/s networking, thanks to the adoption of advanced and more mature photonic technologies. In this work, we review and analyze alternative S-BVT design architecture options that target different network segments and applications. We specifically focus on S-BVTs based on multicarrier modulation (MCM), which provide a wide range of granularity and more flexible spectral manipulation. A detailed description of the main elements in an S-BVT and their characteristics is provided in order to give design guidelines. The performance in a real testbed network is also reported, comparing a set of S-BVT configurations that adopt different technologies. Finally, an extensive discussion of the described architecture, functionalities, and results, including programmability aspects, is provided in view of S-BVT evolution towards future optical network requirements and needs.

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An Operator view on the Introduction of White Boxes into Optical Networks

Cited by 112 publications

References 5 publications

Enabling Network Slicing Across a Disaggregated Optical Transport Network

Enabling Network Slicing Across a Disaggregated Optical Transport Network

SDN-Enabled Sliceable Transceivers in Disaggregated Optical Networks

Sliceable BVT Evolution Towards Programmable Multi-Tb/s Networking

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