creating network domains fails

I'm running the latest EC and a remote proxy.  I am looking to create a network domain, to allow me to create a server pool.  At the moment none of the discovered networks are managed, and I suspect this is why creating a network domain fails (even though the job says it has succeeded).  Our network people are wary of letting OC "manage" the network, so I could really do with knowing to what extent OC will actually "manage" the discovered subnets?      I can't find much detail on this in the documentaion.
thanks