Separating Link3270 bridge workloads

Link3270 bridge workloads can be separated by user ID, LU name, and transaction group.

For Link3270 bridge workloads the LU name can be produced in three different ways:
  1. It can be supplied by the user in the BRIH-NETNAME parameter on the Link3270 call.
  2. It can be generated randomly by the Link3270 bridge facility.
  3. The CICS autoinstall user replaceable program can be used in conjunction with either of the other two methods to accept, reject or modify the supplied or generated NETNAME.
You can separate Link3270 bridge workloads by LU name only if you are using methods 1 or 3 of those listed, so that the LU name is known in advance. If you are using the method 2, the LU name is not known in advance and cannot be used for workload separation.

To separate by the bridge facility NETNAME and not the name associated with the client program that started the Link3270 bridge, you must modify the EYU9WRAM module. You can use the CICS® API commands EXEC CICS ASSIGN USERID() and EXEC CICS ASSIGN BRFACILITY NETNAME() to assign the user ID and LU name. You can use the NETNAME returned from the INQUIRE BRFACILITY() command rather than the NETNAME passed via the DFHDYPDS commarea parameter DYRNETNM to separate the workload.

For more information about Link3270 bridge facility definitions, see Overview of CICS external interfaces.