3.5 Message Processing Events and Sequencing Rules
The general model adopted by this protocol is one of clients performing protocol operations against servers as per LDAP v3 [RFC2251]. In this model, a client transmits a protocol request describing the operation to be performed to an ILS Server. The ILS Server is then responsible for performing the necessary operation(s) in the directory. Upon completion of the operation(s), the server returns a response containing any results or errors to the requesting client.