Open Stack

 Is anyone using virtual networks for their Openstack Ironic installations?

Our flat network is now past 3000 nodes and I am investigating Arista's ML2 plugin and / or Mellanox's NEO as the ML2 plugin.
In addition to scaling we also have additional requirements like provisioning a bare-metal serverin a conference room away from the DC for demo purposes.
I have general questions on whether anyone is actually using the above two (or any other ML2 plugins)with their Openstack ironic installations ?
Thanks,Fred.  
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