Folks, I've a query related to this topic. In the Neutron plugin.ini file, there are two parameters : L2 population and ARP responder. Based on the documentation it's not clear in which used cases these parameters are mandatory. For ex is it just for VLAN/GRE or VLAN based implementation must have them configured also to prevent broadcast storms. The confusion kicks in just because ARP responder is an option parameter that is not turned on by default. Thanks, -Anshul -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-security/attachments/20150720/c2bd2ea4/attachment.html>