neutron-settings.sh

ifcfg-***
DEVICETYPE=ovs

/etc/neutron/plugins/ml2
ml2_conf.ini:6:type_drivers = flat,vlan,gre,vxlan,geneve

/etc/neutron/plugin.ini
network_vlan_ranges = physnet1
bridge_mappings = physnet1:br-ex


# reboot

or, alternatively:

# service network restart
# service neutron-openvswitch-agent restart
# service neutron-server restart


http://docs.openstack.org/ja/image-guide/obtain-images.html#cirros-test-images

CirrOS イメージでは、ログインアカウントは``cirros`` です。パスワードは cubswin:) です。