On Tue, Oct 22, 2013 at 9:52 AM, Kyle Mestery (kmestery) <[email protected]> wrote: > On Oct 22, 2013, at 2:15 AM, Romil Gupta <[email protected]> wrote: >> >> Hi All, >> >> We are using OVS as neutron plugin to use VLAN/ VXLAN. We found that OVS >> does multiple unicast to send the ARP request instead of sending via >> Multicast address. But by default Linux bridge supports Multicast. >> >> Is there any reason behind why OVS doesn't support Multicast? >> >> Thanks in Advance :) > > > Hi Romil: > > I'm copying and pasting the answer I gave to you when you asked this question > on the openstack mailing list as well: > > The only reason is that support for a multicast control plane never made it > upstream into OVS. However, there is effort upstream in OVS to synchronize > the data plane portions of VXLAN, and when that happens, OVS VXLAN will > acquire multicast support.
To clarify this a little bit, the OVS VXLAN dataplane has already been merged with the upstream Linux kernel. However, VXLAN multicast learning is really a control plane feature so it would require a separate implementation in OVS userspace if/when somebody was inclined to do that. _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
