On optimal hierarchical SDN | IEEE Conference Publication | IEEE Xplore

On optimal hierarchical SDN


Abstract:

To address scalability concerns, hierarchical control plane organization has been proposed for SDN. However, an open question is how such a hierarchy should look like. In...Show More

Abstract:

To address scalability concerns, hierarchical control plane organization has been proposed for SDN. However, an open question is how such a hierarchy should look like. In this paper, we model the impact of hierarchies on control plane performance and derive an expression for an optimal hierarchical organization for a given network scale. We then show that using a 4-layer SDN is sufficient for practical network scales, suggesting feasibility and relevance of this approach. Finally, we illustrate the elasticity of hierarchical SDN, which enables a more flexible cost evolution of the SDN control plane.
Date of Conference: 08-12 June 2015
Date Added to IEEE Xplore: 10 September 2015
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Conference Location: London, UK

References

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