Step 4: Define the X.25 NPSI configuration

Define the X.25 NPSI configuration according to the information in X.25 NPSI Planning and Installation. The X.25 NPSI server supports use of the LOGAPPL operand on the X25.MCH definition in the X.25 NPSI configuration to allow automatic recovery. You can use either the Generalized Access to X.25 Transport Extension (GATE) or Dedicated Access to X.25 Transport Extension (DATE).

It is recommended to use the X.25 NPSI GATE configuration that allows sharing of an X.25 physical link and provides better error recovery. A sample is provided in SEZAINST(NPSIGATE). NPSI GATE requires that you include the OPTIONS GATE statement in the X.25 NPSI configuration data set after the LINK statement, as shown in this portion of the X25CONF sample:
 *
 *        NPSI MCH       DTE             Window Packet Logical
 *        LU Name   DNIC Address         Size   Size   Channels
 *        --------  ---- --------------- -      ----   ---
 Link     XU024     PRIV 1               2      1024   2
 Options  GATE
 *
 *        IP address      X.25 DTE addr       C.U.D.
 *        --------------- ---------------     --------
 Dest     192.5.57.2      2
 

You can find a sample in PV SEZAINST(NPSIDATE) for the sites that need to use the X.25 NPSI DATE configuration. See X.25 NPSI Host Programming for information about the definitions and parameters that are used in these configurations.

The following example shows portions of the sample NPSI GATE configuration (NPSIGATE). Ellipses (....) indicate code that has been omitted.
 **********************************************************************
          OPTIONS NEWDEFN=YES,USERGEN=X25NPSI
 **********************************************************************
 ....
 ....
 NPSIV32  BUILD ADDSESS=400,                                            +
                AUXADDR=800,                                            +
                ERLIMIT=16,                                             +
                NAMTAB=120,                                             +
                MAXSESS=250,                                            +
                USGTIER=5,                                              +
                BRANCH=8000,                                            +
                BFRS=104,           BUFFER SIZE TO BE GENED             +
                CATRACE=(YES,255),  CHAN.ADAPTER TRACE OPTION           +
                CSMSG=C3D9C9E340E2C9E340D4C5E2E2C1C7C540C6D6D940E2E24040+
                40C2C340E3C5D9D4C9D5C1D3,                               +
                CWALL=26,                                               +
                ENABLTO=30.0,                                           +
                ERASE=YES,                                              +
                LOADLIB=NCPLOAD,    TARGET OF FINAL LINKEDIT            +
                LTRACE=8,           LINES TRACED SIMULTANEOUSLY         +
                MAXSSCP=8,          NUMBER OF CONCURRENT SSCP'S         +
                MODEL=3745,                                             +
                VERSION=V5R2.1,                                         +
                NEWNAME=NPSITCP,    NAME OF NCP LOAD MODULE             +
                NUMHSAS=8,          HOST SA IN CONCURRENT COMMUNICATION +
                OLT=YES,            ONLINE TERMINAL TEST                +
                PWROFF=YES,                                             +
                BACKUP=500,                                             +
                SALIMIT=511,                                            +
                SLODOWN=12,         BUFFER SLOWDOWN THRESHOLD (PERCENT) +
                SUBAREA=03,                                             +
                TRACE=(YES,100),    ADDRESS TRACE OPTION IN CORE TABLE  +
                TYPGEN=NCP,                                             +
                TYPSYS=MVS,         NCP TO BE GENERATED ON MVS          +
                TWXID=(E8D6E4C3C1D3D311,C2C9C7D5C3D7C3C1D3D325),        +
                VRPOOL=30,                                              +
                TRANSFR=32,                                             +
                NETID=NETA,                                             +
                X25.USGTIER=5,                                          +
                X25.IDNUMH=01,                                          +
                X25.MCHCNT=4,                                           +
                X25.MAXPIU=64K
 ....
 ....
 ***********************************************************************
 *
 *                  NPSI DEFINITIONS
 *
 ***********************************************************************
 X25XXX   X25.NET CPHINDX=1,                                            +
                NETTYPE=1,                                              +
                DM=YES,                                                 +
                OUHINDX=1
          X25.VCCPT INDEX=1,                                            +
                MAXPKTL=128,                                            +
                VWINDOW=2
          X25.OUFT INDEX=1
 *---------------------------------------------------------------------*
 *        Hunt group primary line 021 with fast connect                *
 *---------------------------------------------------------------------*
 HGRP01A  X25.MCH ADDRESS=21,                                           +
                FRMLGTH=131,        128 byte packet + 3 byte header     +
                PKTMODL=8,                                              +
                ANS=CONT,                                               +
                LCGDEF=(0,16),      16 logical channels in group 0      +
                MWINDOW=2,                                              +
                STATION=DTE,                                            +
                SPEED=9600,                                             +
                LCN0=NOTUSED,                                           +
                GATE=GENERAL,       GATE                                +
                LLCLIST=(LLC4),                                         +
                CONNECT=YES,        Fast connect                        +
                LOGAPPL=TCPIPX25,                                       +
                DBIT=NO,                                                +
                DIRECT=NO,                                              +
                SUBADDR=NO
          X25.LCG LCGN=0
          X25.VC LCN=(1,16),                                            +
                MAXDATA=1034,       MAXDATA only with Fast connect!     +
                TYPE=SWITCHED,                                          +
                CALL=INOUT,                                             +
                OUFINDX=1,                                              +
                VCCINDX=1
 *---------------------------------------------------------------------*
 *        Hunt group secondary line 022 with fast connect              *
 *---------------------------------------------------------------------*
 HGRP01B  X25.MCH ADDRESS=22,                                           +
                FRMLGTH=131,        128 byte packet + 3 byte header     +
                PKTMODL=8,                                              +
                ANS=CONT,                                               +
                LCGDEF=(0,16),      16 logical channels in group 0      +
                MWINDOW=2,                                              +
                STATION=DTE,                                            +
                SPEED=9600,                                             +
                LCN0=NOTUSED,                                           +
                GATE=GENERAL,       GATE                                +
                LLCLIST=(LLC4),                                         +
                CONNECT=YES,        Fast connect                        +
                LOGAPPL=TCPIPX25,                                       +
                DBIT=NO,                                                +
                DIRECT=NO,                                              +
                SUBADDR=NO
          X25.LCG LCGN=0
          X25.VC LCN=(1,16),                                            +
                MAXDATA=1034,       MAXDATA only with Fast connect!     +
                TYPE=SWITCHED,                                          +
                CALL=INOUT,                                             +
                OUFINDX=1,                                              +
                VCCINDX=1
 *---------------------------------------------------------------------*
 *        DDN line 023                                                 *
 *---------------------------------------------------------------------*
 DTE01    X25.MCH ADDRESS=23,                                           +
                FRMLGTH=131,        128 byte packet + 3 byte header     +
                PKTMODL=8,                                              +
                ANS=CONT,                                               +
                LCGDEF=(0,16),      16 logical channels in group 0      +
                MWINDOW=2,                                              +
                STATION=DTE,                                            +
                SPEED=9600,                                             +
                LCN0=NOTUSED,                                           +
                GATE=GENERAL,       GATE                                +
                LLCLIST=(LLC4),                                         +
                LOGAPPL=TCPIPX25,                                       +
                CTCP=(00),          paired with CUD list                +
                CUD0=(CC),          incoming CUD selects CTCP           +
                DBIT=NO,                                                +
                DIRECT=NO,                                              +
                SUBADDR=NO
          X25.LCG LCGN=0
          X25.VC LCN=(1,16),                                            +
                TYPE=SWITCHED,                                          +
                CALL=INOUT,                                             +
                OUFINDX=1,                                              +
                VCCINDX=1
 *---------------------------------------------------------------------*
 *        Private line 024: DCE station to router                      *
 *---------------------------------------------------------------------*
 DCE01    X25.MCH ADDRESS=24,       1024 byte packet + 3 byte header    +
                FRMLGTH=1027,                                           +
                PKTMODL=8,                                              +
                ANS=CONT,                                               +
                LCGDEF=(0,2),                                           +
                MWINDOW=2,                                              +
                STATION=DCE,                                            +
                SPEED=9600,                                             +
                LCN0=NOTUSED,                                           +
                GATE=GENERAL,                                           +
                LLCLIST=(LLC4),                                         +
                CTCP=(00),          paired with CUD list                +
                CUD0=(CC),          incoming CUD selects CTCP           +
                DBIT=NO,                                                +
                DIRECT=NO,                                              +
                SUBADDR=NO
          X25.LCG LCGN=0
          X25.VC LCN=(1,2),                                             +
                TYPE=SWITCHED,                                          +
                CALL=INOUT,                                             +
                OUFINDX=1,                                              +
                VCCINDX=1
          X25.END
 ***********************************************************************
 ....
 ....
 GENEND   GENEND