  The use of edge computing can be extremely valuable in support of CPS
efforts. However, few if any testbeds provide the type of resource control and
provisioning required to support edge-enabled CPS experimentation. Likewise,
commercial offerings provide operational capabilities, but lack the distributed
infrastructure and transparency provided by research testbed. In this paper we
propose methods to develop new and augment existing testbeds to better support
the challenges of edge computing and CPS research. The proposed network is
specifically designed to address the challenges associated with edge-based
provisioning, data collection, analysis, monitoring, and measurement across
islands of edge and data center resources.
  We present the purpose of our work, the basic architecture, initial results,
the relationship to the existing software, and the potential of an existing
edge-focused framework to support the foundations of edge-focused CPS testbeds.
