Efficient distributed event-driven simulations of multiple-loop networks
Communications of the ACM
The cost of conservative synchronization in parallel discrete event simulations
Journal of the ACM (JACM)
Simulation of large scale networks I: simulation of large-scale networks using SSF
Proceedings of the 35th conference on Winter simulation: driving innovation
Distributed Simulation: A Case Study in Design and Verification of Distributed Programs
IEEE Transactions on Software Engineering
OpenFlow: enabling innovation in campus networks
ACM SIGCOMM Computer Communication Review
A network in a laptop: rapid prototyping for software-defined networks
Hotnets-IX Proceedings of the 9th ACM SIGCOMM Workshop on Hot Topics in Networks
Virtual Time Integration of Emulation and Parallel Simulation
PADS '12 Proceedings of the 2012 ACM/IEEE/SCS 26th Workshop on Principles of Advanced and Distributed Simulation
Reproducible network experiments using container-based emulation
Proceedings of the 8th international conference on Emerging networking experiments and technologies
Validation of application behavior on a virtual time integrated network emulation testbed
Proceedings of the Winter Simulation Conference
S3F: the Scalable Simulation Framework revisited
Proceedings of the Winter Simulation Conference
Fast simulation of background traffic through fair queueing networks
Proceedings of the Winter Simulation Conference
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Existing network architectures fall short when handling networking trends, e.g., mobility, server virtualization, and cloud computing, as well as market requirements with rapid changes. Software-defined networking (SDN) is designed to transform network architectures by decoupling the control plane from the data plane. Intelligence is shifted to the logically centralized controller with direct programmability, and the underlying infrastructures are abstracted from applications. The wide adoption of SDN in network industries has motivated development of large-scale, high-fidelity testbeds for evaluation of systems that incorporate SDN. We leverage our prior work on a hybrid network testbed with a parallel network simulator and a virtual-machine-based emulation system. In this paper, we extend the testbed to support OpenFlow-based SDN simulation and emulation; show how to exploit typical SDN controller behavior to deal with potential performance issues caused by the centralized controller in parallel discrete-event simulation; and investigate methods for improving the model scalability, including an asynchronous synchronization algorithm for passive controllers and a two-level architecture for active controllers. The techniques not only improve the simulation performance, but also are valuable for designing scalable SDN controllers.