Seamless migration of VMs from nova-net to neutron

OpenStack is one of the most widely used open source Cloud Management Software. It is essentially a set of services working in unison to operate a cloud network infrastructure. Nova is the primary computing engine which manages and deploys/destroys virtual machines and other instances. Neutron provides the networking capability for OpenStack. Since Neutron had inherent stability issues in the initial releases, in order to cope up with the lacking functionality, OpenStack deployments were configured to use Nova-net. Nova-net (a part of the compute service) offers basic networking capability for the VMs using Linux Bridge. Recently, however, Neutron has been stabilized and the latest OpenStack distribution places Neutron as the primary networking API. In this paper, we present a novel migration tool that exposes the python APIs of the two mentioned services and intelligently recreates the topologies in Nova-net using Neutron API. It is a convenient tool that offers a one-click solution to all existing vendors stuck on Nova-net and desirous of moving to Neutron.