Experimental testbed of reconfigurable flexgrid optical network with virtualized GMPLS control plane and autonomic controls towards SDN

Oliveira, Juliano R. F.; Siqueira, María Elisa Pereira Bastos de; Curiel, Giovanni; Hirata, Alberto; Hooft, Fabian van't; Macedo, D.R.; Colazza, Marcio; Rothenberg, Christian Rodolfo Esteve

doi:10.1109/imoc.2013.6646553

Cited by 9 publications

(11 citation statements)

References 6 publications

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“…The first method sends discovery messages inside client payload, so it may impact on the client traffic at the link connection. In some cases, it could also make use of a dedicated control channel to exchange discovery information, as seen more typically in general multiprotocol label switching–based implementations . The second method requires of an in‐service trail termination of the transport overhead so the discovery message data could be retrieved or added by the switch.…”

Section: Introductionmentioning

confidence: 90%

“…In some cases, it could also make use of a dedicated control channel to exchange discovery information, as seen more typically in general multiprotocol label switching-based implementations. 7 The second method requires of an in-service trail termination of the transport overhead so the discovery message data could be retrieved or added by the switch. This process does not affect the client signal, but it requires terminating the overhead at each link endpoint.…”

Section: Related Workmentioning

confidence: 99%

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SDN‐based parallel link discovery in optical transport networks

Montero

Agraz

Pages

et al. 2018

Trans Emerging Tel Tech

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The use of optical technologies in modern network scenarios has increased in the last decade, mostly due to their support in crucial networking topics (ie, bandwidth and scalability). In parallel, these scenarios have also experienced the emergence of a new paradigm recognized as software‐defined networking (SDN), which bases on the decoupling of forwarding and control functions, with aims to provide a more efficient way to manage network resources compared to legacy networking architectures. As both SDN and optical technologies are constantly being introduced in different networking scenarios (eg, data centers, metro, and access networks), their coexistence becomes a must. In this matter, it is important to notice that SDN was initially designed for electronic‐based networks; hence, its support for optical technologies is still at an early stage. Consequently, integration of both solutions still requires research efforts by the community. In this paper, we present a mechanism to address topology discovery in wavelength‐switching optical transport networks (OTNs). In particular, we discuss the importance of the topology discovery function and analyse the proposed mechanism, which bases itself on the use of wavelength‐specific signaling tones as link‐binding data to provide preservice parallel link discovery in OTNs. Furthermore, we validate the method experimentally against an emulated OTN testbed with two different setups and compare the results to our previous work on this subject, achieving substantial reductions in the total topology discovery time.

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Section: Introductionmentioning

confidence: 90%

Section: Related Workmentioning

confidence: 99%

SDN‐based parallel link discovery in optical transport networks

Montero

Agraz

Pages

et al. 2018

Trans Emerging Tel Tech

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“…Cvjectic et al [35] have proposed the use of flexible grids in an access network based on OpenFlow protocol. Oliveira et al [58] have proposed the use of flexible grids in a reconfigurable flexible optical network (RFON) and have demonstrated that concept on a test-bed constituted by four nodes equipped with wavelength selective switches (WSSs), optical amplifiers, and a system for supervision and monitoring of optical channels. Cvjectic et al [35] have proposed the use of flexible grids in an access network based on OpenFlow protocol.…”

Section: Super-channels and Flexible Wdm Gridsmentioning

confidence: 99%

Future Scenarios for Software-Defined Metro and Access Networks and Software-Defined Photonics

Muciaccia

Passaro

2017

Photonics

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Abstract:In recent years, architectures, devices, and components in telecommunication networks have been challenged by evolutionary and revolutionary factors which are drastically changing the traffic features. Most of these changes imply the need for major re-configurability and programmability not only in data-centers and core networks, but also in the metro-access segment. In a wide variety of contexts, this necessity has been addressed by the proposed introduction of the innovative paradigm of software-defined networks (SDNs). Several solutions inspired by the SDN model have been recently proposed also for metro and access networks, where the adoption of a new generation of software-defined reconfigurable integrated photonic devices is highly desirable. In this paper, we review the possible future application scenarios for software-defined metro and access networks and software-defined photonics (SDP), on the base of analytics, statistics, and surveys. This work describes the reasons underpinning the presented radical change of paradigm and summarizes the most significant solutions proposed in literature, with a specific emphasis to physical-layer reconfigurable networks and a focus on both architectures and devices.

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“…O procedimento de descoberta da topologia está descrito em [16]. Ele utiliza como base o LLDP (Link Layer Discovery Protocol) [17], protocolo da camada de enlace que envia informações locais para seus vizinhos diretos e armazena os dados recebidos em uma base local.…”

Section: A Descoberta De Topologia E Instanciação De Vonsunclassified

Employment of IA-RWA in Virtual Optical Networks Using a PCE Implemented as a SDN Application

Santos

Hirata

Trindade

et al. 2014

2014 Brazilian Symposium on Computer Networks and Distributed Systems

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As ROADMs manufacturing process evolved, it became possible to build optical switching nodes that are colorless, directionless and contentionless. These types of switching nodes increase significantly the possibilities of setting up new optical paths, allowing new connectivity services to be offered, such as transport network topology virtualization. One solution to deal with the higher complexity in control operations in such scenario is the SDN architecture, which allows the inclusion of new control features by means of "network applications". This paper presents one use-case of such applications in a SDN scenario by using a PCE capable of doing physical layer impairment analysis, such as total OSNR estimation.

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Experimental testbed of reconfigurable flexgrid optical network with virtualized GMPLS control plane and autonomic controls towards SDN

Cited by 9 publications

References 6 publications

SDN‐based parallel link discovery in optical transport networks

SDN‐based parallel link discovery in optical transport networks

Future Scenarios for Software-Defined Metro and Access Networks and Software-Defined Photonics

Employment of IA-RWA in Virtual Optical Networks Using a PCE Implemented as a SDN Application

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