LU-LU session established using ISR routing

Problem statement

The LU-LU session activates, but no RTP connections are established.

Common symptoms

No message IST1488I was received before LU-LU session activation.

Probable cause

VTAM® determined that the session path is not HPR capable:

One or more connections between nodes in the session path are not HPR capable.
The session path does not terminate with an HPR tower node. (If the terminating node is VTAM, it must specify the start option HPR=RTP or take the default).

User response

Reconfigure the session path to include HPR capable links and terminate with an HPR tower node.