Update the LLBD cataloged procedure by copying the sample provided in SEZAINST(LLBD) to your system or recognized PROCLIB and modifying it to suit your local conditions.
Following is the sample LLBD cataloged procedure:
//LLBD PROC MODULE=LLBD,PARMS=''
//*
//* z/OS Communications Server
//* SMP/E Distribution Name: SEZAINST(LLBD)
//*
//* Copyright: Licensed Materials - Property of IBM
//* "Restricted Materials of IBM"
//* 5647-A01
//* (C) Copyright IBM Corp. 1992, 2001
//* US Government Users Restricted Rights -
//* Use, duplication or disclosure restricted by
//* GSA ADP Schedule Contract with IBM Corp.
//*
//* Status: CSV1R2
//*
//LLBD EXEC PGM=&MODULE,
// PARM='&PARMS',REGION=4096K,TIME=1440
//*
//* The C runtime libraries should be in the system's link list
//* or add them to the STEPLIB definition here. If you add
//* them to STEPLIB, they must be APF authorized. Change
//* the name as appropriate for your installation.
//*
//STEPLIB DD DSN=TCPIP.SEZATCP,DISP=SHR
//SYSOUT DD SYSOUT=*
//SYSPRINT DD SYSOUT=*
//OUTPUT DD SYSOUT=*
//*
//* The SYSMDUMP DD statement will cause MVS to provide
//* an IPCS readable dump for ABENDs.
//*SYSMDUMP DD DISP=SHR,DSN=your.dump.data.set
//SYSIN DD DUMMY
//*
//* SYSTCPD explicitly identifies which data set is to be
//* used to obtain the parameters defined by TCPIP.DATA
//* when no GLOBALTCPIPDATA statement is configured.
//* See the IP Configuration Guide for information on
//* the TCPIP.DATA search order.
//* The data set can be any sequential data set or a member of
//* a partitioned data set (PDS).
//SYSTCPD DD DISP=SHR,DSN=TCPIP.SEZAINST(TCPDATA)