To configure a CICS® region as a TCP/IP Listener to accept and send
IIOP requests, you need to make the following definitions in CICS:
- In the CICS startup jobstream for every CICS region where the Listener
is required, set the following system initialization parameters:
- IIOPLISTENER to YES
- TCPIP to YES
- Define and install TCPIPSERVICE resource definitions in the Listener region
for every port that the Listener will monitor, specifying:
For example:
DEFINE TCPIPSERVICE(IIOPNSSL) GROUP(DFH$IIOP)
DESCRIPTION(IIOP TCPIPSERVICE with no SSL support)
URM(DFHXOPUS) BACKLOG(5) PORTNUMBER(683)
TRANSACTION(CIRR) SSL(NO)
STATUS(CLOSED) PROTOCOL(IIOP)
Important: In a multi-region server, the TCPIPSERVICE definitions must
be installed in all the regions (both listeners and AORs) of the logical
server. In the listener regions, the IIOPLISTENER system initialization parameter
must be set to 'YES'. In the AORs, it must be set to 'NO'. In a combined listener/AOR,
it must be set to 'YES'.
See the CICS Resource
Definition Guide for the full syntax of the TCPIPSERVICE resource
definition.