Count of received frames (including LMI frames) discarded because they were less than four octets long or they were missing the Organizationally Unique Identifier (OUI) for a SNAP header. This is a 32-bit read-only Counter32, so it only ever increases while the Passport is running and rolls back over to 0 once it wraps -- a monitoring system should poll it periodically and alert on the rate of increase (deltas), not on the raw value, since a rising rate is what signals a real, ongoing problem rather than a one-off event.