Hello everyone, I've been reading the published articles about OVN and as I was comparing it to Neutron DVR a question popped up regarding NAT.
In Neutron, when using DVR, VMs that have floating IPs assigned have their traffic forwarded by and to the hosting chassis. VMs that don't have a floating IP assigned have their outgoing traffic forwarded from the hosting chassis to an edge node (Network node in Neutron speak) that runs the L3 agent, which performs NAT/PAT with the router's address on the external network. This means that you only need one external address (For NAT). Distributing PAT for VMs that have no floating IP would require an external / routable address for every chassis, or if optimized for every chassis that is hosting VMs that do not have a floating IP address. As I understand it, OVN will run the ovn-controller daemon on every chassis. Will it distinguish between 'compute' nodes and 'edge' nodes? If not, how are you going to perform NAT for VMs with no floating IP? Assaf Muller, Cloud Networking Engineer Red Hat _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
