HP WBEM Services Software Developer's Kit for HP-UX Provider and Client Developer's Guide A.01

Introduction to WBEM, CIM, CIM Server, and Providers
Client-Server Architecture
Chapter 1 17
Client-Server Architecture
Another component of the WBEM standards, xmlCIM (a specialization of
the eXtensible Markup Language or XML), defines the encoding that
CIM clients and servers use to comunicate about CIM objects, and the
operations that can be performed on them. An example of a typical XML
exchange is shown in the Appendix B, XML Example.
The HyperText Transfer Protocol (HTTP) is used to transport xmlCIM
messages over a network. WBEM-compliant systems and devices
implement an HTTP server. In the recommended implementation, the
HTTP server listens on port 5988 for unencrypted communication or
5989 for encrypted communication.