Open Stack

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
>>
>>
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>> OpenStack-dev at lists.openstack.org
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>
>
>
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