Types of communications jobs

 

This topic describes the most common types of communication jobs.

Qlus (logical unit services)

Qlus handles the event handling for logical unit devices, known as communications devices. Qlus is also responsible for allocating devices to the correct communications subsystem.

Qcmnarbxx (communications arbiters)

The communications arbiters along with Qsysarb (system arbiter) and Qtaparb (tape arbiter) process work for all types of devices, not just communications devices. This work includes communications connection, disconnection, device locking, and error recovery processing.

The system value communication arbiter jobs, at restart (QCMNARB) determines the number of communications arbiter jobs that are started. A minimum of three communications arbiters are started on single-processor systems.

Qsyscomm1 (system communications)

This job handles some communications and input/output (I/O) activity.

Q400filsvr (remote file system communication)

This job performs the common programming interface communications (APPN or APPC) for the remote file system.

 

Parent topic:

Communication jobs