DLUR physical units

For DLUR-defined PUs, CPNAME may be specified for a single PU which is non-adjacent to the DLUS (non-adjacent means there is no APPN connection between the DLUS and the control point named through CPNAME). When the DLUR-defined PU is adjacent to the DLUS, or when more than one PU with the same CPNAME must be defined, a different means of identification dependent upon DLC support must be used (for example, IDBLK/IDNUM for internal PUs). Additional information can be found in the z/OS Communications Server: SNA Network Implementation Guide and in the publications for your DLUR implementation.