The document summarizes eBay's migration from Nova-network to Neutron networking in their OpenStack production environment. It describes migrating the control plane by setting up new OpenStack and NSX controller nodes, migrating databases, and creating Neutron networks. It then details migrating the data plane by installing Open vSwitch on hypervisors, removing interfaces from Linux bridges, and configuring OVS to connect to the NSX controller. It concludes by discussing post-migration changes needed for reboots and rollbacks.