On Tue, Feb 23, 2016 at 1:04 PM, Ben Pfaff <b...@ovn.org> wrote: > > Will this have the desired effect? I think that putting multiple VIFs > on a logical switch and redirecting outputs to them through the localnet > port will have surprising consequences in some cases. The first case > that comes to mind is one where some of the VIFs have "unknown" among > their addresses. In such a case, I'd expect that a packet with an > otherwise unknown destination would output to each of those VIFs. Since > each of those outputs would be implemented by outputting to the localnet > port, we'd see packet duplication on the localnet port. >
Oh yes, this is a scenario I didn't thought about. Thank you so much for pointing out! I will try to address the duplication problem in next version. > I expect that in simple cases this would work OK. It's probably meant > only for the simple cases. If so, then I'd recommend documenting it > more thoroughly. I'd probably start by adding some background text in > ovn-nb.xml in the Logical_Switch table, talking about how there are two > kinds of logical switches, that is, ones that fully virtualize the > network and ones that provide simple connectivity to a physical network > (and try to invent good names for these), and then explain how the two > types have different restrictions and lay out what those are. > Fortunately OpenStack neutron falls into the simple cases I believe :) I will document the limitations clearly, if not able to solve it in this patch. > We also have some text in ovn-architecture.7.xml that talks about the > flows that ovn-controller sets up in table 33. It would be good to > update this to explain what happens with localnet ports in this new > world. Sure. Thanks for the review! -- Best regards, Han _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
