gtps2m2lACF/SNA Data Communications Reference

LU-LU Sessions in an APPN Network

Applications (LUs) that reside in the TPF system need to be defined to the APPN network. Because the entire TPF loosely coupled complex is a single APPN node, LUs that reside in one or all processors in the complex need to be defined to the network. Each LU in an APPN network is associated with its owner, which is the control point (CP) name of the node where the LU resides.

The TPF LUs can be predefined to the APPN network, or discovered dynamically at network startup time using the APPN LU registration process. The UARG user exit in the TPF system indicates which TPF LUs, if any, to register with the APPN network.