On Application of Least-delay Variation Problem in Ethernet Networks Using SDN Concept

• Main Authors: Tomas Hegr, Milos Kozak, Leos Bohac
• Format: Article
• Language: English
• Published: VSB-Technical University of Ostrava 2016-01-01
• Series: Advances in Electrical and Electronic Engineering
• Subjects: ethernet; iec 61850; multicast; smart grids; steiner problem.
• Online Access: http://advances.utc.sk/index.php/AEEE/article/view/1807

The goal of this paper is to present an application idea of SDN in Smart Grids, particularly, in the area of L2 multicast as defined by IEC 61850-9-2. Authors propose an Integer Linear Formulation (ILP) dealing with a Least-Delay-Variation multicast forwarding problem that has a potential to utilize Ethernet networks in a new way. The proposed ILP formulation is numerically evaluated on random graph topologies and results are compared to a shortest path tree approach that is traditionally a product of Spanning Tree Protocols. Results confirm the correctness of the ILP formulation and illustrate dependency of a solution quality on the selected graph models, especially, in a case of scale-free topologies.