High-Performance Routing (HPR) allows you to migrate NCP connections to APPN connections without incurring the associated increase in storage and cycles. HPR uses a rapid transport protocol (RTP) connection to transport session traffic between session endpoints. HPR routes can also traverse an existing subarea network, as HPR support provides for the mapping of HPR routes over VR-based TGs between intermediate nodes.

HPR support is available only over APPN host-to-host channel (AHHC) connections and other type 2.1 channel connections. HPR support for APPN host-to-host connections is not available for composite network nodes.