from
The Free On-line Dictionary of Computing (8 July 2008)
High Performance Routing
HPR
<networking> (HPR) Routing designed to work in conjunction
with {APPN} {Intermediate Session Routing} (ISR) network
nodes. HPR nodes perform many of the same functions as ISR
nodes. For example, HPR nodes use the same method of
calculating routes based on the {Topology} Routing Service
database and {class of service} tables. HPR nodes also
supports such APPN features as connection networks and support
for parallel {transmission groups} (TGs). In the HPR
architecture, both partner nodes must support HPR for {RTP}
connections to take place between the nodes. If one node
supports HPR and the partner node does not, then the link will
support ISR functionality only.
["APPN Architecture and Product Implementations Tutorial",
IBM, GG24-3669-92].
(1997-05-08)