/etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini

[ovs]
local_ip =10.1.208.102
[agent]
polling_interval = 2
tunnel_types =vxlan
vxlan_udp_port =4789
l2_population = False
arp_responder = False
enable_distributed_routing = False
[securitygroup]
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver