In this case, a more optimal HPR TG between the VTAM nodes exists. When the LU requests a session with appla, the session is usually set up directly through the NCP to appla on VTAM2. While this path might offer better performance, it cannot take advantage of HPR features, such as dynamic rerouting or the high availability offered by MNPS. HPRNCPBF can be set to either YES or NO (the default). If you select NO, the session continues to be set up over the direct path. If you select YES, the session will be set up over the HPR pipe between the two VTAM nodes. Specifically, it will use the VR-TG path. In this case, in a connection failure between the NCP and VTAM, the session is redirected over an alternate route without disruption.