A Framework for Decoupling Overlay SDN and Computing Virtualization

When enterprise introduces different vendor overlay SDN (Software defined Networking) and computing virtualization in cloud data center, they will face the problem of interoperability. To solve this problem, this paper proposes a framework for decoupling heterogeneous overlay SDN and computing virtualization. The framework has two key elements, that is, the VM (Virtual Machine) lifecycle event mechanism and drainage mechanism based on VM-Type NVE (Network virtualization Edge). VM life cycle event mechanism realizes the synchronization of VM life cycle events among cloud management platform, SDN and computing virtualization. The drainage mechanism realizes the accurate traffic forwarding between business VMs. Test results show that the framework is suitable for enterprise to build a heterogeneous and compatible cloud infrastructure.