End-to-end service orchestration across SDN and cloud computing domains

This paper presents an open-source orchestration framework that deploys end-to-end services across OpenStack-managed data centers and SDN networks controlled either by ONOS or OpenDaylight. The proposed framework improves existing software in two directions. First, it exploits SDN domains not only to implement traffic steering, but also to execute selected network functions (e.g., NAT). Second, it can deploy a service by partitioning the original service graph into multiple subgraphs, each one instantiated in a different domain, dynamically connected by means of traffic steering rules and parameters (e.g. VLAN IDs) negotiated at run-time.