I think that the various issues with trying to treat a provider network as a logical network are going to difficult to resolve. I think that they reflect a conceptual difference between OVN logical networks and provider networks. OVN knows the hosts on a logical network and where they reside, but it doesn't know that for a provider network, and can't do anything related to specific hosts except in the pathological case where they reside on the same hypervisor. Broadcast may be a problem, but so is a simple output to any port: it's impossible unless the source and destination ports are on the same hypervisor. So my thought is that modeling a provider network as an OVN logical network is unlikely to be fruitful (unless we change the OVN logical network model significantly).
Here's an a strawman alternative. Instead of representing a provider network as a single logical network, represent it as a collection of logical networks, one for each connected port. Each of these logical networks has only two ports, the VM's port plus a physical port on the hypervisor where the VM resides (or more likely a patch port to the bridge that contains the physical port; the other end of the patch port can be an access port if it's a VLAN provider network). It seems to me that this models the situation more naturally. Thoughts? Thanks, Ben. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
