Levels of HPR support

There are three levels of HPR support for a VTAM® node:

Rapid Transport Protocol (RTP): An RTP connection can exist between two VTAM nodes with APPN capability (NODETYPE is coded); these two VTAMs can be endpoints of an HPR route.
Automatic network routing (ANR): A VTAM network node (NODETYPE=NN) can also provide ANR-level support as an intermediate node on an HPR route.
No HPR support: HPR support can be disabled for a particular VTAM network node or end node using the HPR=NONE start option. If HPR support is disabled, that VTAM cannot be an endpoint or intermediate node for an HPR route. A VTAM subarea node (NODETYPE not coded) also cannot provide HPR support.