On Fri, Sep 8, 2017 at 4:36 PM, O'Reilly, Darragh <[email protected]> wrote:
> Hi Tom, > > > > I can confirm that multicast works very well with Neutron ML2/OVS provider > networks. See https://gist.github.com/djoreilly/ > a22ca4f38396e8867215fca0ad67fa28 > > > > I don’t know about OVN and multicast. > > > > Regards, > > Darragh. > > > > *From:* [email protected] [mailto:ovs-discuss-bounces@ > openvswitch.org] *On Behalf Of *Tom Verdaat > *Sent:* 08 September 2017 10:26 > *To:* [email protected] > *Subject:* [ovs-discuss] Tenant multicast traffic on OpenStack with OVN > > > > Hi all, > > I've been looking into how we can enable multicast traffic for our > OpenStack tenants. We once had this on an old OpenStack release that was > using nova-networking and a flat network, but lost this when moving to a > Neutron provider networking setup. Apparently - according to Cisco - it > doesn't work with a regular Neutron ML2 + OVS setup due to what the neutron > L3 agent does with namespaces and iptables. > > In reply to an audience questions about it during the Boston OpenStack > Summit talk on OVN somebody mentioned that OVS can handle multicast traffic > just fine and that this means using OVN it could, potentially, also work > for tenants. So with the new OpenStack Pike release, OVN active/passive HA > support making it suitable for production and OVN doing away with all the > Neutron agents (including the L3 agent?) things are looking up. Just > wondering if anyone could tell me: > > Would multicast work when using Neutron with OVN? > > > > If so, would it work with provider networks, flat networking, or both? > > > > Any insights into the state of multicast supoprt is greatly appreciated! > > > > Thanks, > > Tom > Hi Tom, OVN would treat multicast traffic as broadcast traffic. Although I have not tested this. Presently OVN doesn't support IGMP snooping. Thanks Numan > _______________________________________________ > discuss mailing list > [email protected] > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss > >
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