gtps2m24ACF/SNA Data Communications Reference

Installation and Tuning

To use HPR support, you must install it in your TPF system as well as in other components in the network. This section discusses only how to install HPR support in the TPF system. To install HPR support on another network component, refer to the documentation for that product.

The TPF Migration Guide: Program Update Tapes explains the necessary steps to install HPR support in the TPF system; for example, what new records and parameters must be defined. This section explains how to determine appropriate values for those new parameters. In logical order, the following are the tasks you need to perform:

  1. Define the maximum number of HPR LU-LU sessions, which determines the size of the HPRSAT and becomes the value of the MAXHPRSA parameter on the SNAKEY macro in CTK2. See Defining the HPRSAT for more information.
  2. Define the maximum number of RTP connections, which determines the size of the RTPCB table and becomes the value of the MAXRTPCB parameter on the SNAKEY macro in CTK2. See Defining the RTPCB Table for more information.
  3. Define the #RT1RI and #RT2RI fixed file records that are used to keypoint parts of the RTPCB table. See Defining Fixed File Records for the RTPCB Table for more information.
  4. Define the size of the HPRMT, which becomes the value of the HPRMTSZ parameter on the SNAKEY macro in CTK2. See Defining the HPRMT for more information.
  5. Define the alive timer value, which becomes the value of the HPRALIVE parameter on the SNAKEY macro in CTK2. See Alive Timer for more information.
  6. Define the path switch timer value, which becomes the value of the HPRPST parameter on the SNAKEY macro in CTK2. See Path Switch Timer for more information.
  7. Decide whether or not to keep RTP connections active across a hardware IPL of the TPF system, which determines the value of the RTPRSYNC parameter on the SNAKEY macro in CTK2. See Host IPL Considerations for more information.
  8. Define the HPR flow control parameters, which are the ILWPE, ILWPF, ILWPI, and ILWPS parameters on the SNAKEY macro in CTK2. See ARB Pacing for more information.
  9. Define the size of the read buffers, which becomes the value of the UNITSZ parameter on the SNAKEY macro in CTK2. See Network Considerations for NLPs for more information.

See the TPF Migration Guide: Program Update Tapes for more information about installing HPR support.

See TPF ACF/SNA Network Generation for more information about the SNAKEY parameters in CTK2.