The IBM-supplied directory definition file is required to implement Common Management Information Protocol (CMIP) services. The directory definition file for CMIP services controls the associations that CMIP services on a host has with other CMIP services and with itself. An association is a connection between CMIP services on a host and CMIP Services on another node or between CMIP services on the host and itself.
If you have specified the OSIMGMT=YES start option, a directory definition file is required. The IBM-supplied directory definition file in member ACYDDF of the SYS1.SISTCMIP data set allows unlimited associations with other instances of CMIP services and between CMIP services and itself. If you do not edit the IBM-supplied file, any CMIP application program in any network can have access to CMIP services on this host.
See CMIP services directory definition file for information on coding the directory definition file. See z/OS Communications Server: SNA Network Implementation Guide for more information about the directory definition file.