Research Article
Experimental Evaluation of RSA Algorithms for SDN-Programmable VCSEL-Based S-BVT in High-Capacity and Cost-Efficient Optical Metro Networks
@INPROCEEDINGS{10.1007/978-3-030-68737-3_8, author={Ricardo Martinez and Ramon Casellas and Michela Svaluto Moreolo and Josep Maria Fabrega and Ricard Vilalta and Raul Munoz and Laia Nadal and Juan Pedro Fern\^{a}ndez Palacios and V\^{\i}ctor L\^{o}pez and David Larrabeiti and Gabriel Otero}, title={Experimental Evaluation of RSA Algorithms for SDN-Programmable VCSEL-Based S-BVT in High-Capacity and Cost-Efficient Optical Metro Networks}, proceedings={Broadband Communications, Networks, and Systems. 11th EAI International Conference, BROADNETS 2020, Qingdao, China, December 11--12, 2020, Proceedings}, proceedings_a={BROADNETS}, year={2021}, month={2}, keywords={SDN Flexi-grid metro networks S-BVT}, doi={10.1007/978-3-030-68737-3_8} }- Ricardo Martinez
Ramon Casellas
Michela Svaluto Moreolo
Josep Maria Fabrega
Ricard Vilalta
Raul Munoz
Laia Nadal
Juan Pedro Fernández Palacios
Víctor López
David Larrabeiti
Gabriel Otero
Year: 2021
Experimental Evaluation of RSA Algorithms for SDN-Programmable VCSEL-Based S-BVT in High-Capacity and Cost-Efficient Optical Metro Networks
BROADNETS
Springer
DOI: 10.1007/978-3-030-68737-3_8
Abstract
Future metro networks need to increase the transport capacity and improve the cost- and power-efficiency. These challenges are tackled by the EU-H2020 PASSION project exploiting dense photonic integration and cost-efficient optical technologies. Specifically, PASSION investigates a) modular sliceable bandwidth variable transceivers (S-BVTs) built upòn a set of both vertical cavity surface emitting lasers (VCSEL) and Coherent Receivers (CO-Rx); and b) hierarchical switching nodes in a flexigrid network. An SDN controller handles the network programmability where a key functionality is the path computation and resource selection to fulfil the connection requirements. This is conducted by the Routing and Spectrum Assignment (RSA) algorithms. The considered S-BVT transmitter imposes that each S-BVT VCSEL reaches up to 50 Gb/s. Thus, connections requesting higher bandwidth (e.g., 200 Gb/s) are accommodated over several optical flows. In this context, two RSA algorithms calledco-routed(RSA-CR) andinversed multiplexed(RSA-IM) optical flows are proposed and compared. The RSA-CR enforces that all the connection’s optical flows are routed over the same spatial path; the RSA-IM relaxes this allowing the optical flows being set up over different spatial routes. The experimental evaluation, made upon dynamic traffic, aims at comparing both RSA algorithms performance according to the blocked bandwidth ratio, the average used of S-BVT devices, and the average setup time.
