For communications between a standalone UTM application and a UTM cluster application via the OSI TP or LU6.1 protocol, openUTM offers LPAP bundle functionality.
Figure 39: Communication between a standalone UTM application and UTM cluster application with load distribution
Thanks to this functionality, jobs sent by the standalone application to the UTM cluster application are distributed to the available node applications.
The LPAP bundles must be generated in the standalone UTM application.
 | For more detailed information on automatic load distribution via (OSI) LPAP bundles, refer to openUTM manual “Generating Applications”. |
Load distribution between two UTM cluster applications
The LPAP bundle concept is also applicable in situations in which UTM cluster applications are present on both sides. If only one of the two UTM cluster applications sends requests to the other party then it is only necessary to generate LPAP bundles in this UTM cluster application. If both parties send requests to one another then LPAP bundles are required on both sides.