Design of a software-defined resilient virtualized networking environment

摘要

Network virtualization enables programmability to the substrate network provider who provisions and manages virtual networks (VNs) for service providers. A mix of software-defined and autonomic technology improves the flexibility of network management, including dynamic reconfiguration in the virtualized networking environment (VNE). Virtual router (VR)s run at a logical level where software failures may be more frequent. Thus, a VR failure is more frequent than a physical router failure on the substrate network. In this paper, we present a software-defined resilient virtualized networking environment where a VN topology can be restored by using a preserved standby virtual router (S-VR) after a VR failure. We illustrate a preliminary autonomic setup of a VNE on the GENI testbed.