See "Global Naming Services" for overview and background information on the relationship between FNS and global naming services.
FNS supports federation of enterprise naming systems into the global naming systems, DNS and X.500/LDAP. This chapter describes the procedures for federating NIS+ with DNS and X.500. In general, the procedures involve
Determining the NIS+ root reference for your NIS+ hierarchy
Adding this information in the format required by the global naming system
You can only federate a global naming service if your enterprise-level name service is NIS+ or NIS. If you are using a files-based name service for your enterprise, you cannot federate either DNS or X.500/LDAP.