>From an OpenStack plugins perspective, the Linux Bridge plugin will use a multicast address address for each VNI for it's broadcast/multicast traffic. This is still not correct behavior because it will end up going to all agents in the VNI, but it does result in no fanout from the source node so it doesn't saturate the source's uplink.
Unfortunately right now OVS doesn't support targeting a multicast address as a destination for VXLAN traffic so there will always be a multiplication factor you have to worry about for broadcast/multicast traffic. http://openvswitch.org/pipermail/discuss/2016-January/019897.html On Mon, May 23, 2016 at 4:13 AM, O'Reilly, Darragh <darragh.orei...@hpe.com> wrote: > > > Thanks Darragh. Are you aware of an implementation that treats multicast > traffic properly? > > I don't, but I didn't research other plugins. > With ML2/OVS we used VLAN provider networks and let the physical network > manage multicast between physical nodes. > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss > -- Kevin Benton
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