A hardware error has occurred. A unit at one end of an interface
link has detected a failure in the link or in one of the units attached to
the link. As a result, data transfer across the link has stopped. In the
message text, the node IDs of involved units are represented in the
following format: TTTTTT/MDL,MMM.PPSSSSSSSSSSSS,XXXX where TTTTTT refers to
the machine type, MDL the model number, MMM the manufacturer, PP the
manufacturing plant, SSSSSSSSSSSS the unit sequence number and XXXX the
machine type-dependent physical interface number. If no data is available
for the unit parameters or node ID field, "n/a" is used instead.