For this reasons, back-end networks of this nature are not allowed on MITnet. Consider the possibilities of traffic meant to stay internal to the private network leaking out on the campus network. In some cases, such a leak could have an adverse effect on parts of the Internet, the world-wide network, especially if the private network is causing a high level of errant traffic. Because of this, back-end networks of this nature are also not allowed on MITnet. Choosing to have a back-end network does have its drawbacks.
Private networks require network system administrators to provide long-term support.
IS generally does not provide support for back-end networks. In addition, DCNS may make a decision to route the back-end networks protocol in the future, which would present problems. For this reason, a decision to use a backend network should be made only after thorough consultation with a Network Consultant.