If you specified the OSIMGMT=NO start option, you do not need to read this information.
If you specified the OSIMGMT=YES start option, a directory definition file is required. This information describes how to code the directory definition file to implement Common Management Information Protocol (CMIP) services.
The CMIP services directory definition file performs name mapping and address mapping, and controls the associations that CMIP services on this host has with other CMIP services and with itself. An association is a connection between CMIP services on this host and CMIP services on another node or between CMIP services on this host and itself.
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 update the IBM-supplied file, any CMIP application program in any network can have access to CMIP services on this host.
To learn about the purpose of the CMIP services directory definition file, see the z/OS Communications Server: SNA Network Implementation Guide.