z/OS JES2 Initialization and Tuning Guide
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Determining path resistance

z/OS JES2 Initialization and Tuning Guide
SA32-0991-00

Path resistance is a value set by an installation to control the flow of work between nodes in a network. The best path is determined by the JES2 path manager facility based on the path of least resistance. The resistance is derived from NCC records, CONNECT initialization statements and parameters on the NJEDEF, NODE(nnnn), APPL(avvvvvvv), SOCKET(vvvvvvvv) and LINE(nnnnn) initialization statements.

When defining resistance for a path, you should base the values on the line speed (the faster the line, the lower the line resistance) and the expected workload (the lighter the workload, the lower the work resistance).

The following describes how to:
  • Calculate resistance for adjacent connections
  • Calculate resistance for non-adjacent connections
  • Limit store-and-forward transmissions.

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