Open Stack

On Sun, May 24, 2015 at 5:46 PM, Armando M. <armamig at gmail.com> wrote:

> On 23 May 2015 at 04:43, Assaf Muller <amuller at redhat.com> wrote:
>
>> There's no real reason as far as I'm aware, just an implementation
>> decision.
>>
>
> This is inaccurate. There is a reason(s), and this has been asked before:
>
> http://lists.openstack.org/pipermail/openstack/2014-March/005950.html
> http://lists.openstack.org/pipermail/openstack/2014-April/006865.html
>
> In a nutshell, the design decision that led to the existing architecture
> is due to the way OVS handles packets and interact with netfilter.
>
> The fact that we keep asking the same question clearly shows lack of
> documentation, both developer and user facing.
>
> I'll get this fixed once and for all.
>
[DC]: and very much appreciate your initiative !!

>
> Thanks,
> Armando
>
>
>>
>>
>>
>> On 21 במאי 2015, at 01:48, Na Zhu <nazhu at cn.ibm.com> wrote:
>>
>> Dear,
>>
>>
>> When OVS plugin is used with GRE option in Neutron, I see that each
>> compute
>> node has br-tun and br-int bridges created.
>>
>> I'm trying to understand why we need the additional br-tun bridge here.
>> Can't we create tunneling ports in br-int bridge, and have br-int relay
>> traffic between VM ports and tunneling ports directly? Why do we have to
>> introduce another br-tun bridge?
>>
>>
>> Regards,
>> Juno Zhu
>> Staff Software Engineer, System Networking
>> China Systems and Technology Lab (CSTL), IBM Wuxi
>> Email: nazhu at cn.ibm.com
>>
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>
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