DOT: Distributed OpenFlow Testbed

摘要

With the growing adoption of Software Defined Networking (SDN) technology, there is a compelling need for an SDN emulator that can facilitate experimenting with new SDN solutions. In this context, Mininet has been proposed as an emulator for prototyping a network on a single machine. It allows users to create, control, and customize an emulated network on which they can run and test new control applications like routing, traffic engineering, etc. However, Mininet cannot scale for large networks and high traffic volumes. To address these limitations, we developed Distributed OpenFlow Testbed (DOT), a highly scalable emulator for SDN. DOT distributes the emulated network across multiple physical machines to scale with network size and traffic volume. It also provides guaranteed compute and network resources for the emulated components (i.e., switches, hosts and links). Moreover, DOT can emulate a wider range of network services compared to other publicly available SDN emulators and simulators.