Software Reference Manual - NetEx

Notice that a SEND in one job must match a RECEIVE in the other job.
The BFXTI program sends the file identified by the INDD parameter. In this case, the IN01 DD statement
specifies that the BMD member is to be sent. This member is sent to the RESPOND job, which receives it and
calls it MEMBER3, as specified in the OUT01 DD statement.
Notice that the pair of commands, SEND in the INITIATE procedure and RECEIVE in the RESPOND procedure,
trigger the transfer.
The BFXTR and BFXTI programs continue processing. The RESPOND job then SENDs member NSEF001
over the network. BFXTI RECEIVEs it as MEMBER2 as specified by the OUT01 DD statement in the
INITATE job.
The BFXTR and BFXTI programs continue processing. The INITIATE job SENDs member BMC over the
network. BFXTR RECEIVEs it as MEMBER4 as specified by the OUT02 DD statement in the RESPOND
job.
BFXTR scans the RESPOND commands and does not find any other BFX commands. BFXTR ends processing.
BFXTI scans the INITIATE commands and does not find any commands, then ends also.
There are several important points related to the preceding example.
Either the BFXTI or the BFXTR side of the transfer can send or receive files.
Each SEND statement must have a matching RECEIVE statement in the partner procedure.
The IDs must match in the initiating and responding procedures.
This example shows BFXTI in host ZOS1 and BFXTR in host ZOS2. Normally, all three programs would
exist in each host to allow either side to initiate a session.
Automatic Job Submission
Automatic job submission is the most commonly used method of transferring files using BFX. This method
enables a user to transfer files to and/or from a responding system without user assistance on the responding
system.
The user must first prepare an initiating job similar to the one used for manual job submission. This job identifies
the responding host and defines the direction of the transfer. This job also describes the data and any
special processing to be performed on the data.
The user must also prepare a set of job control information for the responding job and specifies the direction
of the transfer. This responding job, written using the control language of the responding host, is physically
encapsulated (or referenced) in the initiating job.
The basic idea of automatic job submission is that the initiating job first transfers the responding job across
the IP network (using BFXTI). The BFX Job Submitter (BFXJS) program receives this responding job and
automatically submits it on its host system. The BFXTI and BFXTR programs then coordinate the transfer of
the files as they did for manual job submission.
The initiating and responding hosts may be any host that has the appropriate NETEX and BFX products installed,
but to simplify the discussion we will assume both hosts are IBM z/OS systems.
The sample initiating job (Figure 4 on page 6) and the following text and diagrams illustrate the automatic job
submission process.
MAN-REF-H211-05 Introduction Page 5