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In this paper we propose a new architecture supporting communication between various Software Defined Networking (SDN) domains. This novel architecture provides inter-domain connection based on vendor neutral communication protocol using new modules for SDN controller. Motivation for this project is to facilitate deployment of SDN in a large scale network - i.e. the Internet and provide a way for controllers in different domains to cooperate in network traffic management. Result of this cooperation would enable service providers to offer and manage virtualised devices and services to end customers, thus lowering their OPEX and CAPEX.
Helebrandt et al. (Mon,) studied this question.