To verify that the Open vSwitch network agents have been properly checked in, issue the openstack network agent list command on the controller node:

The Open vSwitch agent on compute02, compute03, and snat01 should now be visible in the output with a state of UP. If an agent is not present, or the state is DOWN, you will need to troubleshoot agent connectivity issues by observing log messages found in /var/log/neutron/neutron-openvswitch-agent.log on the respective host.