Multiple SDN controller orchestration for financial cloud

For the networking of financial data center, traditional practices tend to directly purchase vendor commodity. However, in the era of software defined network (SDN), both vendor and open source SDN solution will be adopted for the consideration of long term evolution and to prevent vendor-lock. Therefore, how to uniformly manage multiple SDN controllers becomes a key problem to be solved before real deployment. In this paper, it is proposed to deploy multiple SDN solutions into different network zones, and use OpenStack as an orchestrator. Inter-region networking and implementation are addressed and compared in detail. It is shown that the proposed method only adjusts the deployment mode, while there is few modifications to the OpenStack implementation. Therefore, it is practical for the current financial cloud deployment.