High Performance Routing
<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].
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