This field reports the cumulative count of FCoE frames received with an error condition, such as a corrupted encapsulation header or an invalid embedded FC frame, tracked by this particular stats object since it was created or last reset. For a network admin, a jump here on a specific vHBA's FCoE interface is one of the first places to check when a host reports intermittent SAN path failures. For example, a cumulative value of 30 frames since the interface came up would still be within a tolerable range, whereas a rapidly climbing count in the hundreds would justify escalation.