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On Sat, May 23, 2015 at 12:43 PM, Assaf Muller <amuller at redhat.com> wrote:

> There's no real reason as far as I'm aware, just an implementation
> decision.
>
[DC]: in this case wouldn't this bee seen suitable as best practicies vs
what every blog/ manual is suggesting?

>
>
>
> 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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