Please ask this question on openstack-ops, where a lot of operators convene and can probably share experiences with the SDN controllers you listed.
My gut says that an SDN controller is expected to handle multiple regions and large topologies, but I can't comment on if any SDN solution handles this case, with any authority. I would imagine so - but you'd have better luck on the ops list for specific controllers -- Sean M. Collins __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: [email protected]?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
