CIM for an complex object uses the principal of abstraction to define the model. Network devices with built-in support for policy enforcement. The information model describes the environment you want to manage. DEN offers Policy - based networking, Security and Quality of service and more. DEN makes policy-based network management possible, but it does not impose a security or access model on administration.
Administration is the premise of individual organizations.
However, delegation of administration is possible by taking advantage of the hierarchical structure of LDAP directories. DEN is just starting to make a difference, just starting to take off and take hold. Next year, we should see a pronounced increase in the use of DEN and the use of policy. When the DEN spec was finalized, there were over 180 vendors, companies, users that signed up to be a part of DEN - the DMTF includes, Cisco, Lucent, Microsoft, virtually any large networking company. Management companies - same story.