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Title: SDN Controller Placement With Availability Upgrade Under Delay and Geodiversity Constraints
Authors: Santos, Dorabella 
Gomes, Teresa Martinez dos Santos 
Tipper, David 
Keywords: Software-Defined Networking; geodiversity; availability; controller placement problem; integer linear programming
Issue Date: Mar-2021
Publisher: IEEE
Project: CENTRO-01-0145-FEDER-029312 
Volume: 18
Issue: 1
Abstract: An inherent problem in Software-Defined Networking (SDN) is the Controller Placement Problem, which addresses how many controllers to deploy in the network, and where to place them. Several variants of this problem have been addressed and researched to find the placements that adapt best to different contexts. In this paper, we address a more complex variant of this problem, to satisfy QoS requirements and to offer robustness against disaster-based failures. We address the joint optimization problem of controller placement and finding a tree subgraph which can be upgraded to have enhanced availability, in order to satisfy delay and availability constraints. Additionally, we consider geodiversity constraints as a way to enhance robustness to disaster-based failures.
ISSN: 1932-4537
DOI: 10.1109/TNSM.2020.3049013
Rights: embargoedAccess
Appears in Collections:I&D INESCC - Artigos em Revistas Internacionais
FCTUC Eng.Electrotécnica - Artigos em Revistas Internacionais

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