Publications

Conferences

SDN Control Architectures for WDM over SDM (WDMoSDM) Networks

2021 Photonics in Switching and Computing Conference
We provide an overview of SDN control architectures for WDM over SDM (WDMoSDM) optical networks. We address dynamic management of end-to-end connec- tivity services and WDM virtual network topologies (VNTs) for partially disaggregated multi-domain WDMoSDM networks.
Conferences

End-to-End Network Slice Stitching using Blockchain-based Peer-to-Peer Network Slice Managers and Transport SDN Controllers

2021 Optical Fiber Communications Conference and Exhibition (OFC2021)
This paper presents and experimentally validates a Blockchain-based architecture to manage End-to-End Network Slice Deployment by stitching Network Slice Subnets in edge/cloud computing domains connected through packet/optical transport networks domains managed by different operators.
Conferences

First Scalable Machine Learning Based Architecture for Cloud-native Transport SDN Controller

2021 Optical Fiber Communications Conference and Exhibition (OFC2021)
We present a cloud-native architecture with a machine learning QoT predictor that enables cognitive functions in transport SDN controllers. We evaluate the QoT predictor training and auto-scaling capabilities in a real WDM/SDM testbed.
Conferences

Multi-layer Transport Network Slicing with Hard and Soft Isolation

2021 Optical Fiber Communications Conference and Exhibition (OFC2021)
We validate the deployment of isolated transport network slices in IP over DWDM network. To this end, an isolated transport network slice is deployed using multi-layer isolation mechanisms based on OpenConfig and ONF Transport API.
Conferences

Demo paper: Scalable Architecture for Cloud-native Transport SDN Controller Using GNPy and Machine Learning techniques for QoT estimation

2021 Optical Fiber Communications Conference and Exhibition (OFC2021)
This demo shows a cloud-native SDN controller that can estimate end-to-end QoT using both analytical (GNPy) and machine learning algorithms on WDM systems. This transport SDN controller is able to scale horizontally using custom metrics.
Conferences

Blockchain-Based Connectivity Provisioning in Multiple Transport SDN Domains

2021 International Conference on Optical Network Design and Modeling (ONDM2021)
Hierarchical Software Define Networking (SDN) architectures is used to manage the co-existence of multiple domains by having an element on top. A collaborative relation-ship between domains, might solve this issue. Blockchain may become the key element for this change to happen.
Conferences

Scalable Physical Layer Security Components for Microservice-Based Optical SDN Controllers

2021 European Conference on Optical Communication (ECOC2021)
We propose and demonstrate a set of microservice-based security components able to perform physical layer security assessment and mitigation in optical networks. Results illustrate the scalability of the attack detection mechanism and the agility in mitigating attacks.
Conferences

Optical Network Telemetry with Streaming Mechanisms using Transport API and Kafka

2021 European Conference on Optical Communication (ECOC2021)
We present a streaming mechanism for optical networks based on the Kafka architecture and protocols, to efficiently distribute state and network updates following the upcoming ONF Transport API streaming implementation agreement.
Conferences

First Demonstration of Dynamic Deployment of SDN-enabled WDM Virtual Network Topologies (VNTs) over SDM networks

  • Filippos Balasis
  • Ramon Casellas
  • Ricardo Martínez
  • Cen Wang
  • Noboru Yoshikane
  • Itsuro Morita
  • Takehiro Tsuritani
2021 European Conference on Optical Communication (ECOC2021)
We present the dynamic deployment of logical WDM VNTs by deploying virtual links between ROADM/OXC nodes using spatial channels provided by SDM networks.
Conferences

Advances in SDN control for Beyond 100G disaggregated optical networks

2021 European Conference on Optical Communication (ECOC2021)
This tutorial considers the evolution of SDN control for optical transport networks in disaggregated scenarios, focusing on its requirements and challenges when applied to "beyond 100G" networks - term that jointly refers to the use of coherent technology, data rates beyond 100G and the evolution
Conferences

TeraFlow: Secured Autonomic Traffic Management for a Tera of SDN Flows

2021 - EuCNC 2021 - European Conference on Networks and Communications & 6G Summit
TeraFlow proposes a new type of secure, cloud-native Software Defined Networking (SDN) controller that will radically advance the state-of-the-art in beyond 5G networks by introducing novel micro-services architecture, and provide revolutionary features for both flow management (service layer) an
Conferences

Workshop paper: “From 5G to 6G Automated and Intelligent SecuriTy: FAST. Cloud-Scale SDN Network Security in TeraFlow”

2021 - EuCNC 2021 - European Conference on Networks and Communications & 6G Summit
TeraFlow proposes a new type of secure, cloudnative Software Defined Networking controller that will radically advance the state-of-the-art in beyond 5G networks by introducing novel micro-services architecture and providing revolutionary features for flow management and optical/microwave network
Conferences

Special session paper: “Autonomous Network Management towards 6G. Cloud-Native SDN Network Management for Beyond 5G Networks with TeraFlow”

2021 - EuCNC 2021 - European Conference on Networks and Communications & 6G Summit
TeraFlow proposes a novel secured transport Software Defined Networking (SDN) controller based on a microservice architecture. The objective is to foster innovation around SDN controller and evolve them to be suitable for beyond 5G networks.
Journals

Packet Optical Transport Network Slicing with Hard and Soft Isolation

2021 - Applied Sciences, 11(13), 6219
Network operators have been dealing with the necessity of a dynamic network resources allocation to provide a new generation of customer-tailored applications.