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Hello Randy,

Just for the record, I'm using Flat Networks (very similar with VLAN
Provider Networks), with a working Metadata connectivity... Instances get a
route to the Metadata network through DHCP, in my case...

Flat Networks, AFAIK, requires a "dedicated bridge map", using different
physical ethernet from the one used by your GRE/VXLAN tunnels...

Here is a working howto about Flat Networks with Metadata:
https://gist.github.com/tmartinx/9177697 - Easy to convert it to VLAN
Provider Networks...

Cheers!


On 10 June 2014 09:17, Randy <amps at djlab.com> wrote:

> I've got the 3-node Icehouse/Juno setup using Neutron (ml2/GRE) networking
> on Xenserver, like this:
>
> http://docs.openstack.org/trunk/install-guide/install/
> apt/content/basics-networking-neutron.html
>
> Everything works fine with the floating IPs and all...but now I want to
> introduce a flat network (with external router) that doesn't require NAT or
> floating IPs.   Like this:
>
> http://docs.openstack.org/havana/install-guide/install/
> apt/content/section_use-cases-mixed.html
>
> Using the flat network, DHCP works but there's no metadata or connectivity
> in or out of the VMs.
>
> ACTUAL QUESTION: If we introduce the flat network to the network node on a
> dedicated interface, will it tunnel the flat network over GRE to each
> compute node?   Or do we need to physically connect and bridge map each
> flat network on every compute node separately?
>
> --
> ~Randy
>
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