IIRC, OVS doesn't support multicast, if you really need such feature, try
the vxlan implemented in  mainline kernel. I didn't try myself, but google
says mainline kernel supports that.


On Tue, Jul 22, 2014 at 3:41 PM, 朱宗敏(研七 福州) <[email protected]>
wrote:

> Hello folks:
>
>
>
> Currently, we can build up a connection between two VxLAN networks by
> setting unicast ip address to the *"remote_ip"* option of VxLAN type
> interface on openvswitch.
>
> But when there are many VxLAN networks, we hope to broadcast the VxLAN
> packet to all peers; but it is in-convenient to set all the unicast
> "remote_ip" parameters one-by-one. I have tried to set the "remote_ip" with
> a multicast group address, such as 224.0.0.2 or 225.1.1.1 using command:
>
> sudo ovs-vsctl add-port br1 vx1 -- set interface vx1 type=vxlan
> options:remote_ip=225.1.1.1
>
> The command does not return error, *but ovs does not send the multicast
> VxLAN packet out as expected*. And in log, I can find a warning "vx1:
> multicast remote_ip=225.1.1.1 not allowed".
>
> Originally, VxLAN depends on multicast to find & resolve the Mapping(IP,
> MAC) among different VxLAN networks. So I think there might be some kind of
> configure to make use of the multicast characteristic of VxLAN.
>
>
>
> Can you kindly offer me some help on it?
>
> I would really appreciate your help.
>
>
>
> Thanks!
>
> _______________________________________________
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>
>
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