The network control program (NCP) does not recognize XA-specific
MDR record information for 3705 and 3725 communications controllers.
It records 370-mode MDR records even when the device is generating
XA-mode records.
Selected NMVT records are logged by VTAM. These records originate
within SNA network devices (for example, 3745).
Selected NMVT records are logged in a 9370/VM environment. These
records originate within the attached token-ring network.