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.