Dynamic Controller Provisioning in Software Defined Networks
Abstract
Software Defined Networking (SDN) has emerged as a new paradigm that offers the programmability required to dynamically configure and control a network. A traditional SDN implementation relies on a logically centralized controller that runs the control plane. However, in a large-scale WAN deployment, this rudimentary centralized approach has several limitations related to performance and scalability. To address these issues, recent proposals have advocated deploying multiple controllers that work cooperatively to control a network. Nonetheless, this approach drags in an interesting problem, which we call the Dynamic Controller Provisioning Problem (DCPP). DCPP dynamically adapts the number of controllers and their locations with changing network conditions, in order to minimize flow setup time and communication overhead. In this paper, we propose a framework for deploying multiple controllers within an WAN. Our framework dynamically adjusts the number of active controllers and delegates each controller with a subset of Openflow switches according to network dynamics while ensuring minimal flow setup time and communication overhead. To this end, we formulate the optimal controller provisioning problem as an Integer Linear Program (ILP) and propose two heuristics to solve it. Simulation results show that our solution minimizes flow setup time while incurring very low communication overhead.
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- Authors
- Bari, M. F., Roy, A. R., Chowdhury, S. R., Zhang, Q., Zhani, M. F., Ahmed, R., & Boutaba, R.
- Affiliations
- University of Waterloo (CA)
- Venue
- Proceedings of the 9th International Conference on Network and Service Management (CNSM 2013)
- Publisher
- IEEE
- Published
- 2013-10
- Pages
- 18-25
- OpenAlex
- W2013958607
- Cited by
- 369
- References
- 15
- Citations by year
- 2026: 5 · 2025: 6 · 2024: 12 · 2023: 14 · 2022: 19 · 2021: 30 · 2020: 50 · 2019: 50 · 2018: 57 · 2017: 46 · 2016: 34 · 2015: 28 · 2014: 17 · 2013: 1
- FWCI
- 20.44
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- International Conference on Network and Service Management (CNSM) (publishedVersion)
- Topics
- Physical Sciences › Computer Science › Computer Networks and Communications › Software-Defined Networks and 5G
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Optical Network Technologies
- Physical Sciences › Computer Science › Computer Networks and Communications › Caching and Content Delivery
- Keywords
- software-defined networking, distributed controllers, controller placement, OpenFlow switches, communication overhead, integer linear programming, heuristics, wide area networks
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