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Russell,

Another question is about "localnet". It is a very useful feature. :-)

Is it possible to assign which VLAN tag will be used for a specific provider network?
In your example in https://github.com/openvswitch/ovs/commit/c02819293d52f7ea7b714242d871b2b01f57f905 : "physnet1" is used as physical network, and br-eth1 is used as the provider network OpenFlow switch.
If we can assign the VLAN tag of the provider network, is the VLAN tag translation done by "br-int" or "br-eth1"?


Thanks,
Tony

-----Original Message-----
From: WANG, Ming Hao (Tony T) 
Sent: Sunday, September 27, 2015 2:26 PM
To: 'Russell Bryant'; OpenStack Development Mailing List (not for usage questions)
Subject: RE: [openstack-dev] [neutron + ovn] Does neutron ovn plugin support to setup multiple neutron networks for one container?

Russell,

Thanks for your valuable information.
I understood Geneve is some kind of tunnel format for network virtualization encapsulation, just like VxLAN.
But I'm still confused by the connection between Geneve and VTEP.
I suppose VTEP should be on behalf of "VxLAN Tunnel Endpoint", which should be used for VxLAN only.

Does it become some "common tunnel endpoint" in OVN, and can be also used as a tunnel endpoint for Geneve?

Thanks,
Tony
-----Original Message-----
From: Russell Bryant [mailto:rbryant at redhat.com] 
Sent: Friday, September 25, 2015 12:04 AM
To: WANG, Ming Hao (Tony T); OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [neutron + ovn] Does neutron ovn plugin support to setup multiple neutron networks for one container?

On 09/24/2015 10:37 AM, WANG, Ming Hao (Tony T) wrote:
> Russell,
> 
> Thanks for your detail explanation and kind help!
> I have understand how container in VM can acquire network interfaces in different neutron networks now.
> For the connections between compute nodes, I think I need to study Geneve protocol and VTEP first.
> Any further question, I may need to continue consulting you. :-)

OVN uses Geneve in conceptually the same way as to how the Neutron reference implementation (ML2+OVS) uses VxLAN to create overlay networks among the compute nodes for tenant overlay networks.

VTEP gateways or provider networks come into play when you want to connect these overlay networks to physical, or "underlay" networks.

Hope that helps,

--
Russell Bryant