We have a public and a private network, and we use the Cisco CSR to route traffic between them. In our private network, we have a Cisco Nexus 1000V virtualization switch that works with VMware. Our goal was to have our two LANs work together as a layer two network, and this solution forms the gateway between them.
Our CSR is set up such that one end is connected to the internet, whereas the other end connects to our public network. We have a route between the CSR and our Nexus 1000V, which is directly connected to the other switch that is included with VMware.