Using Link3270 bridge load routing

The Link3270 bridge mechanism extends the dynamic routing capability of base CICS® to support dynamic routing of 3270 bridge transactions.

Figure 1 shows that the DPL request from the Link3270 bridge program to a remote user transaction can be sent to any of a number of application owning regions (AORs) where the user transaction is enabled.

The dynamic transaction routing user replaceable program (URM) is called when Link3270 bridge program DFHL3270 needs to identify the AOR to which an eligible transaction should be routed. New parameters on the interface allow the dynamic transaction routing program to identify Link3270 bridge requests and obtain the names of the target transaction and the bridge facility token. You can write your own transaction routing program to exploit these new parameters, use the CICS supplied dynamic routing program (DFHDYP), or use workload routing services provided by CICSPlex® System Manager.