HP WBEM Services for HP-UX and Linux System Administrator's Guide

How Does HP WBEM Services Work?
HP WBEM Indications
Chapter 224
A CIM-XML Indication Handler, functioning as a CIM Client, uses the
DMTF CIM-XML protocol to send an Indication to each specified
destination.
When the CIM Server acts as a CIM Listener, the CIM Server functions
as an HTTP Server to receive Indications as CIM Export Messages.
A CIM Message is a well-defined request or response data packet used
to exchange information between CIM Applications. There are two types
of CIM Messages, CIM Operation Messages and CIM Export
Messages.
A CIM Operation Message is a CIM Message used to invoke an
operation on the target CIM namespace.
A CIM Export Message is a CIM Message used to communicate
information about a CIM namespace or element that is foreign to the
target. A CIM Export Message is informational only and does not define
an operation on the target CIM namespace or even imply the existence of
a target namespace.
A CIM Listener receives CIM Export requests (e.g., Indications),
coordinates the distribution of requests among one or more Consumers
and sends CIM Export responses.
NOTE For stand-alone CIM Listeners, the listener waits at an
application-specific port to receive Indications (i.e., CIM Export
Messages).