I am trying to install Openstack Grizzy with Quantum (OpenvSwitch plugin) networking in a single machine in the lab and encounter some problems. Everything works fine if I use nova-network. Below are my questions. 1) Which documents should I follow to install Openstack Grizzy with Quantum? I mainly refer to following links. http://docs.openstack.org/grizzly/basic-install/apt/content/basic-install_network.html https://github.com/mseknibilel/OpenStack-Grizzly-Install-Guide/blob/OVS_SingleNode/OpenStack_Grizzly_Install_Guide.rst 2) How do I verify Quantum is functioning correctly? I basically check log files under /var/log/quantum to see if there are errors. 3) The instance gets terminated due to error "Instance failed network setup". However there is no error in log files under /var/log/quantum. What could be the possible causes for that? Many thanks.