If you are considering migrating your NIS (Once know as YP) data to LDAP then I recommend looking at the new Sun Blue Prints document Understanding the NIS to LDAP Service (N2L) Architecture. N2L provides integration between NIS and LDAP by providing NIS protocol support to the Solaris Operating Environment and other operating systems while keeping the data synchronised on the Directory Server over the LDAP protocol. Thus older operating systems that provide NIS serices but do not provide LDAP support can access data from a central LDAP service via the N2L gateway. The new Blue Print explains this in more detail and provides information on: How naming services are implemented within the Solaris OE, How information is stored within the Sun Java System Directory Server, Migration techniques and examples for migrating your naming data from NIS to LDAP and much more.
Technorati: Solaris