Step 1: Configuring PROFILE.TCPIP for UNIX PORTMAP

If you want the PORTMAP server to start automatically when the TCPIP address space is started, you should include PORTMAP in the AUTOLOG statement in the hlq.PROFILE.TCPIP data set.
AUTOLOG
  PORTMAP JOBNAME PORTMAP1
ENDAUTOLOG
To ensure that port UDP 111 and TCP 111 are reserved for the z/OS® UNIX PORTMAP server, add the z/OS UNIX PORTMAP server jobname to the PORT statement in hlq.PROFILE.TCPIP. If you use the sample cataloged procedure, PORTMAP, to start the z/OS UNIX PORTMAP server, the jobname is PORTMAP1:
PORT
  111 UDP PORTMAP1     ; Portmapper Server
  111 TCP PORTMAP1     ; Portmapper Server
See the z/OS Communications Server: IP Configuration Reference for more information about the PORT statement.