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The transmission of a request is handled by a transmission initiator. Each initiator processes one request at a time.
An accepted transmission request is placed on the FTS Request Queue pending the availability of a transmission initiator to handle its processing.
CA SOLVE:FTS maintains 16 initiators for each remote region with which it communicates, and as many of these initiators may be active as is required. There might be 16 initiators active to one destination but only two active to another, according to operational requirements.
Each initiator services one or more request classes. A request class is identified by a single letter, A through Z, assigned when the transmission definition is created. A transmission request can be processed only by an active initiator that services its particular class.
Initiators can be assigned either normal or high priority. A transmission request executing under a high priority initiator achieves a greater throughput rate than other requests executing under normal priority initiators at the same time. The priority of an initiator can be switched at any time and takes immediate effect if the initiator is currently executing a request.
The meaning of transmission classes is determined by the installation. For example, class A may represent high priority work and class E may represent low priority overnight report files. The allocation of classes to initiators enables your site to give preference to selected transmission classes or to stop transmission for particular classes.
You can temporarily change the allocation of initiator classes and the number of initiators active for a particular destination in one of the following ways:
The set of initiators for a destination is built the first time the link to that destination is started. The default set provides one active initiator servicing all classes, with the remaining 15 inactive and serving class A.
If this default set is not suitable, you can define an alternative initiator set for this destination from the FTS : Initiator Maintenance Menu. This definition is stored in the VFS database and is retrieved when the INMC link to the destination first becomes active. It can specify whether the CA SOLVE:FTS function is enabled for the destination on link activation. If the function is not enabled, operator intervention is required.
The functional split between initiator supervision and the definition of initiator sets enables temporary changes to be made to the initiators as operational requirements dictate (supervision) without making permanent changes to the defined initiator settings.
In addition to the control of the processing of outbound transmissions, the initiator functions enable the setting of a maximum inbound transmission limit for each remote region. This can be used to limit the number of transmissions that a region is prepared to accept, particularly if the need arises to reduce the amount of processing being performed.
Initiator definitions can also designate the type of compression performed on the transmitted data and may specify a preferred network route for the transmission if the INMC link was defined using the multipath options.
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