[openstack-dev] Why need br-int and br-tun in openstack neutron

Assaf Muller amuller at redhat.com
Sat May 23 11:43:31 UTC 2015


There's no real reason as far as I'm aware, just an implementation decision.



> 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
> 
> __________________________________________________________________________
> OpenStack Development Mailing List (not for usage questions)
> Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20150523/81467017/attachment.html>


More information about the OpenStack-dev mailing list