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A quick update on this. As suggested by members of the community, I created a nova blueprint https://blueprints.launchpad.net/nova/+spec/expose-vlan-trunking, and posted a spec for Queens here: https://review.openstack.org/471815. Sean Mooney suggested in his review that automatic vlan subinterface configuration in the guest should be enabled/disabled on per trunk basis. I think that it’s a good idea. But to do that requires API and database schema changes. If it’s something that the community would like to go with, then I’d think it requires a RFE from the neutron side. We need reviews and feedbacks to move this forward.

Thanks,
Robert

On 6/7/17, 12:36 PM, "Robert Li (baoli)" <baoli at cisco.com> wrote:

    Hi Bence,
    
    Thanks for the pointers. I was aware of this https://bugs.launchpad.net/neutron/+bug/1631371, but not the blueprint you wrote. 
    
    As suggested by Matt in https://bugs.launchpad.net/nova/+bug/1693535, I wrote a blueprint https://blueprints.launchpad.net/nova/+spec/expose-vlan-trunking, trying to tackle it in a simple manner.
    
    --Robert
    
    
    On 6/6/17, 7:35 AM, "Bence Romsics" <bence.romsics at gmail.com> wrote:
    
        Hi Robert,
        
        I'm late to this thread, but let me add a bit. There was an attempt
        for trunk support in nova metadata on the Pike PTG:
        
        https://review.openstack.org/399076
        
        But that was abandoned right after the PTG, because the agreement
        seemed to be in favor of putting the trunk details into the upcoming
        os-vif object. The os-vif object was supposed to be described in a new
        patch set to this change:
        
        https://review.openstack.org/390513
        
        Unfortunately there's not much happening there since. Looking back now
        it seems to me that turning the os-vif object into a prerequisite made
        this work too big to ever happen. I definitely didn't have the time to
        take that on.
        
        But anyway I hope the abandoned spec may provide relevant input to you.
        
        Cheers,
        Bence
        
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