CA TCPAccess X.25 Server can't be initialized using HPNS API

Products

• TCPAccess X.25 Server

Issue/Introduction

CA TCPAccess X.25 Server can’t be initialized using HPNS API under Z/OS V2

with the following parameters definitions

 

OMXXP1       OPENMAX MAXDATA=4096,

OMXXP1               MAXSESS=64,

OMXXP1               TCPSTACK=HPNS,

OMXXP1               TCPASN=TCPIP   <== Specify USSstackname

 

We are getting the following warning messages in the log file :

NTPPI148W TCPLSTN  BIND req. failed for IP= Port=01998 Errno=00049

NTPPI032W TCP/IP listen *error* Port=1998  Task TCPLSTN

NTPPI148W OMXCONSL BIND req. failed for IP= Port=03023 Errno=00049

NTPPI032W TCP/IP listen *error* Port=3023  Task OMXCONSL

Resolution

Use the following  parameters definition for the first init member :

OMXXP1       OPENMAX MAXDATA=4096,

OMXXP1               MAXSESS=64,

OMXXP1               TCPSTACK=USS,

OMXXP1               TCPUSS=TCPIP   <== Specify USSstackname

 

Now we are getting the right messages in log the file :

 

NTPPI147I Task TCP001 USS  interface to address space TCPIP active

NTPPI147I Task TCPLSTN USS  interface to address space TCPIP active

NTPPI147I Task OMXCONSL USS  interface to address space TCPIP active

NTPPI031I TCP/IP listen active Port=1998  IP=0. Task TCPLSTN

NTPPI031I TCP/IP listen active Port=3023  IP=0. Task OMXCONSL

Additional Information

We recommended using USS API for performance reasons.