Interconnecting Infiniband with a DMZ

InfiniBand is a data centre technology but it is not typically deployed in DMZ’s. As a non-DMZ layer-2 networking technology, InfiniBand is typically more secure than Ethernet. If I want to deploy internal (intranet) and external application servers (internet), how can I achieve this using InfiniBand. The normal way would be to deploy the external application into a DMZ separating it from the internal application server but if Infiniband is a technology that is not typically deployed in a DMZ, how can I do this and also ensure that the overall security is maintained.