Interop is a significant challenge - making these networks interoperable between numerous hardware and software vendors, while supporting thousands of users with multiple devices passing large amounts of traffic is remarkable - and that is exactly what the InteropNet team does for each Interop, with limited time and resources. As Glenn Evans stated a few weeks ago, they build it new each time. This is due in part to new hardware, software and technical implementations the team seeks to demonstrate on the network.
To help illustrate the complexity of an Interop deployment, below is an overview of the network for Interop's Las Vegas show in a few weeks, which our CEO and Chief Network Architect, Brandon Ross helped design. Please feel free to post any questions or comments below, and he will respond.