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High Performance Routing (HPR)

Introduction

High Performance Routing (HPR) is an enhancement to APPN that improves network performance and reliability. Considered the next step in the evolution of SNA networking, HPR replaces the APPN routing technique called intermediate session routing (ISR) and provides significant performance improvements over ISR. HPR replaces ISR with two elements: Rapid Transport Protocol (RTP) and Automatic Network Routing.