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Maximizing SDN resilience to node‐targeted attacks through joint optimization of the primary and backup controllers placements
Abstract
In Software Defined Networks (SDN) packet data switches are configured by a limited number of SDN controllers, which respond to queries for packet forwarding decisions from the switches. To enable optimal control of switches in real time the placement of controllers at network nodes must guarantee that the controller-to-controller and switch-to-controller communications delays are bounded. Apart from the primary controllers that control the switches in the nominal state, separate backup controllers can be introduced that take over when the primary controllers are unavailable, and whose delay bounds are relaxed. In this paper we present optimization models to jointly optimize the placement of primary and backup controllers in long-distance SDN networks, aimed at maximizing the network's resilience to node-targeted attacks. Applying the models to two well-known network topologies and running a broad numerical study we show that, when compared with the standard approach of using only primary controllers, the use of backup controllers provides significant resilience gains, in particular in case of strict delay bounds.
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Authors (4)
-
Mariusz Mycek
- Politechnika Warszawska
-
Artur Tomaszewski
- Politechnika Warszawska
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Amaro de Sousa
- Universidade de Aveiro, Portugalia
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
NETWORKS
no. 83,
pages 428 - 467,
ISSN: 0028-3045 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Pióro M., Mycek M., Tomaszewski A., de Sousa A.: Maximizing SDN resilience to node‐targeted attacks through joint optimization of the primary and backup controllers placements// NETWORKS -Vol. 83,iss. 2 (2024), s.428-467
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/net.22201
- Sources of funding:
-
- Statutory activity/subsidy
- Verified by:
- Gdańsk University of Technology
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