[ovs-discuss] Tunneling in Openstack Quantum

[Martin Mailand]

Hi Aaron,

thanks for you quick response.

So the whole L2 separation of the tenants is done via flow
configuration. And the gre tunnel are merely there to connect the br-tun
on the compute nodes with the br-tun on the L2 Node?

Unfortunately I do not have a running Quantum installation, yet,
therefore I cannot dump the flow.

-martin

On 05.03.2013 23:22, Aaron Rosen wrote:
> Hi
> 
> Response inline:
> 
> On Tue, Mar 5, 2013 at 2:00 PM, Martin Mailand <martin at tuxadero.com> wrote:
>> Hi List,
>>
>> I hope this is ok to ask here. I looked through the Code of Quantum and
>> I don't understand how the gre tunneling is working.
>> I have two bridges br-int and br-tun, both are connected via a patch
>> port. But on the br-tun I do have several tunnel, for each tenant one?
> 
> You'll have a tunnel to each Hypervisor (not tenant) that is
> registered with quantum via the quantum-openvswitch-agent that runs on
> each Hypervisor.
> 
>> How do I direct the traffic from a vm which is connect to the br-int,
>> via the patchport to the right tunnel?
> 
> If you run:
> 
> sudo ovs-ofctl dump-flows br-tun
> sudo ovs-ofctl dump-flows br-int
> 
> you'll see the flows that are doing this for you. The
> quantum-openvswitch-agent will install these flows for you when a VM
> lands on the corresponding Hypervisor.
> 
>>
>> Thanks in advance.
>>
>> -martin
> 
> Aaron
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