Planning for Rapid Network Reconnect (RNR)

Rapid Network Reconnect (RNR) automatically reconnects IMS VTAM® terminal sessions across outages (IMS, z/OS®, CPC, or VTAM) and subsequent IMS restarts on the same or another CPC within an IMSplex. The use of RNR can provide greater availability of VTAM sessions and eliminate the need to clean up sessions and restart IMS after an outage.

Note: The following topics apply only to RNR systems and should not be confused with XRF systems, which also use VTAM multinode persistent sessions (MNPS).