The index field entry enables computed weight values for route components to be stored and retrieved. This entry points to the entry in the COS weight array where the weights for the COS are stored. It specifies only one TPRI field for each COS table entry. APPN TPRI requires that traffic over a given session with the same COS in a particular APPN network flow with the same transmission priority. Each row defines either a set of node characteristics or a set of TG characteristics.
Entries can include security, cost per connect time, and available capacity.
The field representing a characteristic contains a range of acceptable values. WF is used by RSS to determine relative desirability of a particular route component. The WF can contain a constant or the name of a function that RSS uses in weight calculation. IBM SNA Subarea Routing SNA logical areas and node addressing are two central components of traditional routing in SNA environments. This section addresses these topics in the context of traditional SNA networking.