Demonstration of a Dynamic Transparent Optical Network Employing Flexible Transmitters/Receivers Controlled by an OpenFlow–Stateless PCE Integrated Control Plane [Invited]

Liu, Lei; Choi, Hyeon Yeong; Casellas, Ramon; Tsuritani, Takehiro; Morita, Itsuro; Martínez, Ricardo; Muñoz, Raül

doi:10.1364/jocn.5.000a66

Cited by 27 publications

(20 citation statements)

References 27 publications

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“…In most cases, SDON integrates the centralized controller (e.g., NOX [51]) with the Path Computation Element (PCE). So the function of the path computation is totally decoupled from the NOX controller, and someone can fully utilize the technical advantages of the PCE.…”

Section:  Resource Controlmentioning

confidence: 99%

“…So the function of the path computation is totally decoupled from the NOX controller, and someone can fully utilize the technical advantages of the PCE. In the SDON, there exist two types of PCEs, the stateless PCE [51] and the stateful PCE [26]. Without considering the path storage, the stateless PCE reduces the control overhead, and it is easily deployed.…”

Section:  Resource Controlmentioning

confidence: 99%

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Resource management and control in converged optical data center networks: Survey and enabling technologies

et al. 2015

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Section:  Resource Controlmentioning

confidence: 99%

Section:  Resource Controlmentioning

confidence: 99%

Resource management and control in converged optical data center networks: Survey and enabling technologies

et al. 2015

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“…The more recent publication [24] proposed a new protocol extension and stateless-PCE integrated control-plane to address several new technical and architectural issues related to the introduction of flexi grid technologies.…”

Section: Multi-layer Multi-granularity (Ml-mg)mentioning

confidence: 99%

“…The second approach is to insert a generic agent in order to enable OpenFlow in the optical nodes. ML-MG [24] only considers a hardware agent using virtualization of ports and TL1, while OFELIA [15] considers both the introduction of hardware and software agents using the NE management interface. The interfacing agent represents a short-to mid-term approach in order to enable deployed optical devices into the OpenFlow network and to allow a smoother transition towards SDN.…”

Section: Comparison Of Openflow-based Transport Sdnmentioning

confidence: 99%

“…The first extensions to the OpenFlow Protocol in support of circuit switching [11] only consider TDM circuits and fixed DWDM grid; however the evolution of transport SDN has lead to field trials with fixed and flexible DWDM grid technologies [15,24] and even several switching paradigms like burst switching [22].…”

Section: Comparison Of Openflow-based Transport Sdnmentioning

confidence: 99%

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Can open flow make transport networks smarter and dynamic? An overview on transport SDN

Alvizu

Maier

2014

2014 International Conference on Smart Communications in Network Technologies (SaCoNeT)

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Abstract-The growth of intra data center communications, cloud computing and multimedia content applications force transport network providers to allocate resources faster, smarter and dynamically. Software-defined Networking (SDN), has been proposed to create a unified control plane for transport networks (Transport SDN). This article presents an overview on Transport SDN proposals based on OpenFlow, the de facto SDN protocol. OpenFlow is at the forefront of the Transport SDN models and several testbeds have proved the implementation of a unified control plane for multi-domain and multi-technology optical transport networks. We show how OpenFlow can be enabled in current and future network devices through agents and new hardware respectively. Transport SDN can boost the programmability and scalability of the network, increase the network intelligence and allow for dynamic resource allocation and restoration. The review highlights a rapid development of Transport SDN, which seems to tackle the problems that GMPLS encountered for commercial deployment. Finally a comparison between the main research efforts towards a multi-domain transport SDN is given.

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Lightpath admission control and rerouting in dynamic flex‐grid optical transport networks

2016

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In dynamic flex‐grid optical transport networks, Lightpath Admission Control (LAC) is the task of finding a Routing and Spectrum Assignment (RSA) solution for a current lightpath request; otherwise, the request is blocked if there are not enough free available resources. When rerouting is supported, one or more currently established lightpaths can be rerouted and/or assigned with a different spectrum in order to accommodate the current lightpath request. We propose LAC methods based on mixed integer linear programming that provide a RSA solution for the current request aiming to maximize the acceptance probability of future lightpath requests. When rerouting is supported, we consider that only one currently established lightpath can be rerouted. We compare the proposed methods with the traditional shortest path‐based approach through simulation. Without lightpath rerouting, the blocking probability is significantly improved. With lightpath rerouting, the number of rerouting operations is significantly decreased while the blocking probability is marginally improved. Moreover, the blocking fairness between lightpaths with different spectrum widths is improved both with and without lightpath rerouting. In all cases, the CPU times of the mixed integer linear programming approaches are a few seconds, on average. © 2016 Wiley Periodicals, Inc. NETWORKS, Vol. 69(1), 151–163 2017

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Demonstration of a Dynamic Transparent Optical Network Employing Flexible Transmitters/Receivers Controlled by an OpenFlow–Stateless PCE Integrated Control Plane [Invited]

Abstract: Doc. ID 189881). L. Liu was with KDDI R&D Laboratories Inc., 2-1-15 Ohara, Fujimino-shi, Saitama 356-8502, Japan. He is now with the

Cited by 27 publications

References 27 publications

Resource management and control in converged optical data center networks: Survey and enabling technologies

Resource management and control in converged optical data center networks: Survey and enabling technologies

Can open flow make transport networks smarter and dynamic? An overview on transport SDN

Lightpath admission control and rerouting in dynamic flex‐grid optical transport networks

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