Isolated in-band communication for distributed SDN controllers
Rhaban Hark, Amr Rizk, Nils Richerzhagen, Björn Richerzhagen, Ralf Steinmetz · 2017
Control planes of Software-defined Networks consist of multiple interconnected controllers to provide scalability and reliability. Existing approaches for distributed control planes add high complexity and neglect in-band connectivity issues. Subsequently, in this work, we propose a low-cost inter-controller communication service, which (i) requires only few resources in terms of state, communication overhead, and computational complexity and (ii) provides isolation between control and production traffic using shared in-band channels.