Hi Numan, Good to know. So OVN would not fix this automatically. At least, given the info in Darragh's gist not when used in combination with GRE/VxLAN/Geneve.
Is this on the roadmap? Somebody working on it? Is there a ticket that we can track? Thanks, Tom 2017-09-08 14:37 GMT+02:00 Numan Siddique <[email protected]>: > > > 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/djorei >> lly/a22ca4f38396e8867215fca0ad67fa28 >> >> >> >> I don’t know about OVN and multicast. >> >> >> >> Regards, >> >> Darragh. >> >> >> >> *From:* [email protected] [mailto: >> [email protected]] *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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