> # FCoE Statistics

> Field | Description
> --- | ---
> Alignment Errors | The count of frames received on a particular interface that are an integral number of octets in length but do not pass the FCS check.
> FCS Errors | The count of frames received on a particular interface that are an integral number of octets in length but do not pass the FCS check. This count does not include frames received with frame-too-long or frame-too-short error.
> Single Collision Frames | The count of successfully transmitted frames on a particular interface for which transmission is inhibited by a single collision.
> Multiple Collision Frames | The count of successfully transmitted frames on a particular interface for which transmission is inhibited by more than one collisions.
> SQE Test Errors | The number of times the PLS sublayer generated the SQE TEST ERROR message for a particular interface.
> Deferred Transmissions | The count of the number of frames for which the first transmission attempt on a particular interface is delayed because the medium is busy.
> Late Collisions | The number of times that a collision is detected on a particular interface later than one slot time into the transmission of a packet.
> Excessive Collisions | The count of the number of frames for which transmission on a particular interface failes because of excessive collisions. This counter does not increment when the interface is operating in full-duplex mode.
> Internal Mac Transmit Errors | The count of the number of frames for which transmission on a particular interface fails because of an internal MAC sublayer transmit error.
> Carrier Sense Errors | The number of times that a carrier sense condition was lost or never asserted when attempting to transmit a frame on a particular interface.
> Frame Too Longs | The count of number of frames received on a particular interface that exceed the maximum permitted frame size.
> Internal Mac Receive Errors | The count of number of frames for which reception on a particular interface fails because of an internal MAC sublayer receive error.
> Symbol Errors | For an interface operating at 100 Mb/s, the number of times there was an invalid data symbol when a valid carrier was present

> Copyright 2010-2015, Cisco Systems, Inc. All rights reserved.