openstack team mailing list archive

[Juris <juris@xxxxxx>]

Thanks for the answer Dan,

Now I know everything I need.

On Fri, Aug 24, 2012 at 10:32 PM, Dan Wendlandt <dan@xxxxxxxxxx> wrote:
> Hi Juris,
>
> Some more detail would be useful here.  It sounds like you're trying
> to use multicast, for which IGMP is a control protocol.  Is it that
> you're trying to run nova VMs and make sure they can participate in
> multicast groups?  Basic flat Nova networking connects VMs directly to
> a physical network, so the configuration of multicast on the routers
> (and IGMP snooping on the switches) is generally something that would
> happen outside the scope of openstack configuration.  For private
> networks in VlanManager mode or with Quantum, the existing L3
> forwarding logic does not run a daemon that participates in IGMP, so
> there's no out-of-the box way to get IGMP working between a private
> network and the external network in your data center, I suspect (my
> guess is that you'd have to muck with making the host running
> nova-network or the quantum-l3-agent also run a multi-cast aware
> routing software, like Quagga).  In the future, Quantum will enable
> pluggable back-ends for "logical routers", in which case you'll be
> able to get routing back-ends from different vendors and projects,
> many of which will support IGMP.
>
> Dan
>
>
> On Fri, Aug 24, 2012 at 3:59 AM, Juris <juris@xxxxxx> wrote:
>> Hi all,
>>
>> Do you have any experience configuring OpenStack to work with IGMP traffic?
>> If I have IGMP server and appropriate network infrastructure, what is
>> the best way to bound it with one of OpenStack's private networks?
>>
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>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Dan Wendlandt
> Nicira, Inc: www.nicira.com
> twitter: danwendlandt
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~