Optical Switching in Data Centers: Architectures Based on Optical Packet/Burst Switching

Calabretta, Nicola; Miao, Wang

doi:10.1007/978-3-319-61052-8_3

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…The introduction of optical switching in DCN is key to resolving these shortcomings. Many recent works proposed hybrid electrical/optical switched DCN ([4]- [13]). However, optical switches have high reconfiguration times, posing barriers in their applicability in DCNs.…”

Section: Introductionmentioning

confidence: 99%

Simplifying Optical DCN Fabrics with Blocking Space Switching and Wavelength-Constrained WDM

Kontodimas¹,

Christodoulopoulos²,

Varvarigos³

2020

Optical Network Design and Modeling

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The introduction of all-optical switching in data center interconnection networks (DCN) is key to addressing some of the shortcomings of state-of-the-art electronic switched solutions. Limitations in the port count, reconfiguration speed and cost of optical switches, however, require novel optical switching and DCN designs. We present the concept of a simplified DCN fabric that relies on a lean optical switch design of limited but scalable functionality that offers high reconfiguration speeds, real-time scheduling, efficient control and low equipment cost. To achieve these objectives, the proposed architecture relaxes the usual nonblocking switching requirements but opts for switching modules that are constrained in terms of the achievable space and wavelength input-output configurations. We analytically compare the functionality and complexity of the simplified fabric with those of a non-blocking switch. We evaluate the throughput performance of the simplified DCN fabric and compare it to that of other fabrics with a different level of functionality and centralized control.

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Section: Introductionmentioning

confidence: 99%

Simplifying Optical DCN Fabrics with Blocking Space Switching and Wavelength-Constrained WDM

Kontodimas¹,

Christodoulopoulos²,

Varvarigos³

2020

Optical Network Design and Modeling

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“…In turn, the forward packets method is utilized in the network to establish a transition communication between networks and introduce the concepts of next-generation technologies, for instance, colorless, directionless and contention fewer networks [2]. The concept of the next generation network (smart gird) has the conventional power technology that integrated with nonconventional information and communication technology and makes it possible to offer energy and Based on that, IEC 61850 cannot be just a communication standard; rather, it is an inclusive standard utilized for designing the automation systems.…”

Section: Introductionmentioning

confidence: 99%

Modeling Intelligent Control Switch IEC 61850 Based Substation Automation Communication

Nimma

Faraj

2018

ASI

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Abstract:With the advent of the new information technologies, the power communication service object is continuously enhanced by the modernization level of the switches architecture designed in the substation automation environment. In the futuristic plan, the communication network not only provides a transmission line between devices, but also takes into account the reliability and efficiency of the power system communication network. Many protocols are used for the provision of faster and more robust communication among control centers, Remote Terminal Units (RTUs) and Intelligent Electronic Devices (IEDs). These protocols support the exchange of a wide range of possible common data that is organized by a DATA-SET, such as in synchronized circuit breaker switching, distance protection and overcurrent protection. However, these protocols do not give the expected performance with standard switches architectures due to the remarkable traffic in power system communication. To address this issue, this paper modelled a substation automation switch based on the packet forwarder technique based on Generic Object Oriented Substation Event (GOOSE) protocol with different architectures of substation automation switches based International Electrotechnical Commission (IEC) 61850 standard. Finally, the simulations results found that the architecture of the four-switch system showed a significant performance, as compared with other architectures.

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Nanosecond optical switching and control system for data center networks

Xue

Calabretta

2022

Nat Commun

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Electrical switching based data center networks have an intrinsic bandwidth bottleneck and, require inefficient and power-consuming multi-tier switching layers to cope with the rapid growing traffic in data centers. With the benefits of ultra-large bandwidth, high-efficient cost and power consumption, switching traffic in the optical domain has been investigated to replace the electrical switches inside data center networks. However, the deployment of nanosecond optical switches remains a challenge due to the lack of corresponding nanosecond switch control, the lack of optical buffers for packet contention, and the requirement of nanosecond clock and data recovery. In this work, a nanosecond optical switching and control system has been experimentally demonstrated to enable an optically switched data center network with 43.4 nanosecond switching and control capability and with packet contention resolution as well as 3.1 nanosecond clock and data recovery.

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Optical Switching in Data Centers: Architectures Based on Optical Packet/Burst Switching

Cited by 4 publications

References 40 publications

Simplifying Optical DCN Fabrics with Blocking Space Switching and Wavelength-Constrained WDM

Simplifying Optical DCN Fabrics with Blocking Space Switching and Wavelength-Constrained WDM

Modeling Intelligent Control Switch IEC 61850 Based Substation Automation Communication

Nanosecond optical switching and control system for data center networks

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