Planet IXT-900-1X1UP - Page 94

User’s Manual of IXT-900 PoE series
94
Figure 4-3-5 Ethernet link Counters Screenshot
Object
Description
 Alignment Errors
The number of alignment errors (missynchronized data packets).
 FCS Errors
A 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 number of successfully transmitted frames for which transmission is inhibited
by exactly one collision.
 Multiple Collision
Frames
A count of successfully transmitted frames for which transmission is inhibited by
more than one collision.
 Deferred
Transmissions
A count of frames for which the first transmission attempt on a particular interface
is delayed because the medium was busy.
 Late Collision
The number of times that a collision is detected later than 512 bit-times into the
transmission of a packet.
 Excessive Collision
A count of frames for which transmission on a particular interface fails due to
excessive collisions. This counter does not increase when the interface is
operating in full-duplex mode.
 Frame Too Long
A count of frames received on a particular interface that exceeds the maximum
permitted frame size.
 Symbol Errors
The number of received and transmitted symbol errors
 Control In Unknown
Opcodes
The number of received control unknown opcodes
 In Pause Frames
The number of received pause frames
 Out Pause Frames
The number of transmitted pause frames