gtpm3m0iMulti-Processor Interconnect Facility Reference

Status Management

There is no explicit common status management facility in MPIF; however, the following should be noted:

Echo Check

The MPIF echo check function exists to ensure that MPIF paths which become inoperative do not remain undetected. Echo Check is invoked by MPIF at a user-specified time interval. At each interval an echo check message is sent over each started path with no activity since the last expired time interval. If the message is not read by the other side before the next time interval, path failure is assumed.

Potential causes of this are: