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I'll check these links. Thanks a lot.

On 2/13/2014 5:13 PM, Mathieu Rohon wrote:
> Hi,
>
> You can see in the review [1] that doude first proposed an ebtables
> manager to implement the ARP responder for ovs. OVS 2.1 is now able to
> manage an ARP responder based on flow [2], so he switches his
> implementation to a flow based ARP responder (please, have a look at
> patches history).
> ebtables driver seems more interesting since this implementation would
> be compatible with any ovs version, but VM needs to be plugged to a
> linux bridge and with ovsfirewalldriver [3], nova won't need to plug
> VM to a linux bridge anymore, so ARP responder based on ebtables won't
> work.
>
> [1]https://review.openstack.org/#/c/49227/
> [2]https://review.openstack.org/#/c/49227/27/neutron/plugins/ml2/drivers/l2pop/README
> [3]https://blueprints.launchpad.net/neutron/+spec/ovs-firewall-driver
>
> On Thu, Feb 13, 2014 at 9:51 AM, Édouard Thuleau <thuleau at gmail.com> wrote:
>> Hi,
>>
>> On Havana, a local ARP responder is available if you use the ML2 with the
>> l2-pop MD and the Linux Bridge (natively implemented by the Linux kernel
>> VXLAN module).
>> It's not (yet [1]) available with the OVS agent. The proposed OVS
>> implementation use new OVS flows integrated on branch 2.1.
>>
>> Just few remarks about the ML2 MD l2-pop. Two important bugs persists:
>> - One [2] impacts all the MD l2-pop (Linux Bridge and OVS agents). Merged on
>> trunk and waiting to be backported [3]
>> - Another one [4] impacts only the OVS agent stills waiting review.
>>
>> [1] https://review.openstack.org/#/c/49227/
>> [2] https://review.openstack.org/#/c/63913/
>> [3] https://review.openstack.org/#/c/71821/
>> [4] https://review.openstack.org/#/c/63917/
>>
>> Édouard.
>>
>>
>> On Thu, Feb 13, 2014 at 4:57 AM, Nick Ma <skywalker.nick at gmail.com> wrote:
>>> Hi all,
>>>
>>> I'm running a OpenStack Havana cloud on pre-production stage using
>>> Neutron ML2 VxLAN. I'd like to incorporate l2-population to get rid of
>>> tunnel broadcast.
>>>
>>> However, it seems that ARP Proxy has NOT been implemented yet for Open
>>> vSwitch for Havana and also the latest master branch.
>>>
>>> I find that ebtables arpreply can do it and then put some corresponding
>>> flow rules into OVS.
>>>
>>> Could anyone provide more hints on how to implement it in l2-pop?
>>>
>>> thanks,
>>>
>>> --
>>>
>>> Nick Ma
>>> skywalker.nick at gmail.com
>>>
>>>
>>> _______________________________________________
>>> OpenStack-dev mailing list
>>> OpenStack-dev at lists.openstack.org
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>>
>>
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-- 

cheers,
Li Ma