z/OS Communications Server: IP Messages Volume 2 (EZB, EZD)
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EZBH008E

z/OS Communications Server: IP Messages Volume 2 (EZB, EZD)
SC27-3655-01

EZBH008E
The port range defined for CINET use has not been reserved for OMVS on this stack.

Explanation

Check CSTCP_CINET_PORTRNG_RSV_tcpipstackname determined that the port range defined for CINET use in the BPXPRMxx parmlib member is not reserved for OMVS on this stack.

IBM® suggests that the port range specified by the INADDRANYPORT and INADDRANYCOUNT parameters in the BPXPRMxx parmlib member for use by CINET should be reserved for OMVS using the PORTRANGE TCP/IP profile statement. This prevents a TCP/IP stack from allocating a port that CINET might subsequently attempt to use, which could result in an ABEND and the message:
BPXF219I A SOCKETS PORT ASSIGNMENT CONFLICT EXISTS BETWEEN UNIX SYSTEM SERVICES  AND tcpipstackname 

See the information about the PORTRANGE statement in z/OS Communications Server: IP Configuration Reference for more information about the PORTRANGE statement.

See z/OS MVS Initialization and Tuning Reference for more information on the INADDRANYPORT and INADDRANYCOUNT parameters.

The check name includes the jobname of the TCP/IP stack as a suffix.

System action

The system continues processing.

Operator response

Determine the CINET INADDRANY port range by issuing
D OMVS,CINET
Create an OBEY file containing a PORTRANGE statement that reserves the CINET INADDRANY port range for use by OMVS and then issue:
V TCPIP,tcpipstackname,OBEYFILE,filename
where tcpipstackname is the name of the TCP/IP stack, and filename is the name of the OBEY file, to reserve the CINET INADDRANY port range. To cause the TCP/IP stack to reserve the CINET INADDRANY port range when the stack is started, contact the system programmer.

See the information about the VARY TCPIP,,OBEYFILE command in z/OS Communications Server: IP System Administrator's Commands for more information about the VARY TCPIP,,OBEYFILE command.

System programmer response

Change the TCP/IP profile to include a PORTRANGE statement to reserve the port range defined by the INADDRANYPORT and INADDRANYCOUNT parameters in the BPXPRMxx parmlib member for use by OMVS.

User response

Not applicable.

Problem determination

Not applicable.

Source

z/OS® Communications Server TCP/IP

Module

EZBHCCK1

Routing code

Not applicable.

Descriptor code

3

Automation

Not applicable.

Example

Not applicable.

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