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Towards distributed emergency flow prioritization in software‐defined networks

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Listed:
  • Jerico Moeyersons
  • Behrooz Farkiani
  • Tim Wauters
  • Bruno Volckaert
  • Filip De Turck

Abstract

Emergency services must be able to transfer data with high priority over different networks. With 5G, slicing concepts at mobile network connections are introduced, allowing operators to divide portions of their network for specific use cases. In addition, Software‐Defined Networking (SDN) principles allow to assign different Quality‐of‐Service (QoS) levels to different network slices. This paper proposes a microservices‐based framework, able to run both centralized and distributed, that guarantees the required bandwidth for the emergency flows and maximizes the best‐effort flows over the remaining bandwidth based on their priority. The proposed framework consists of an offline linear model, allowing to optimize the problem for a batch of flow requests. For dynamic situations, an online approach is also required in the framework to handle new incoming flows by calculating the path with a shortest path algorithm and utilizing a greedy approach in assigning bandwidth to the intermediate flows. In this article, the linear model is evaluated through simulation, the distributed architecture is evaluated through emulation while the online approach is validated through physical experiments with SDN switches. The results show that the linear model is able to guarantee the resource allocation for the emergency flows while optimizing the best‐effort flows with a sub‐second execution time. The distributed architecture is able to split up the managed network into different parts, allowing division of work between controllers. As a proof‐of‐concept, a prototype with Zodiac switches validates the feasibility of the centralized framework.

Suggested Citation

  • Jerico Moeyersons & Behrooz Farkiani & Tim Wauters & Bruno Volckaert & Filip De Turck, 2021. "Towards distributed emergency flow prioritization in software‐defined networks," International Journal of Network Management, John Wiley & Sons, vol. 31(1), January.
    • Handle: RePEc:wly:intnem:v:31:y:2021:i:1:n:e2127
    DOI: 10.1002/nem.2127
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    References listed on IDEAS

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    1. Jin Y. Yen, 1971. "Finding the K Shortest Loopless Paths in a Network," Management Science, INFORMS, vol. 17(11), pages 712-716, July.
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