Aviat Networks ECLIPSE EDGE, Руководство пользователя

Страница: 147 / 274

260-668080-001 Rev 002 March 2013 101
Eclipse Edge User Manual
Dot3 Stats 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.
The count represented by an instance of this object is
incremented when the frameCheckError status is returned
by the MAC service to the LLC (or other MAC user). Received
frames for which multiple error conditions obtain are,
according to the conventions of IEEE 802.3 Layer
Management, counted exclusively according to the error
status presented to the LLC.
Coding errors detected by the physical layer for speeds
above 10 Mb/s will cause the frame to fail the FCS check.
Dot3 Stats Frame
Too Long A count of frames received on a particular interface that
exceed the maximum permitted frame size.
The count represented by an instance of this object is
incremented when the frameTooLong status is returned by
the MAC service to the LLC (or other MAC user). Received
frames for which multiple error conditions obtain are,
according to the conventions of IEEE 802.3 Layer
Management, counted exclusively according to the error
status presented to the LLC.
Dot3 Out Pause
Frames Number of pause frames transmitted.
Dot3 Stats Late
Collisions The number of times that a collision is detected on a
particular interface later than one slotTime into the
transmission of a packet.
A (late) collision included in a count represented by an
instance of this object is also considered as a (generic)
collision for purposes of other collision-related statistics.
This counter does not increment when the interface is
operating in full-duplex mode.
Dot3 Stats
Excessive
Collisions A count of frames for which transmission on a particular
interface fails due to excessive collisions.
This counter does not increment when the interface is
operating in full-duplex mode.
Dot3 Stats Multiple
Collision Frames A count of successfully transmitted frames on a particular
interface for which transmission is inhibited by more than
one collision.
A frame that is counted by an instance of this object is also
counted by the corresponding instance of either the
ifOutUcastPkts, ifOutMulticastPkts, or ifOutBroadcastPkts,
and is not counted by the corresponding instance of the
dot3StatsSingleCollisionFrames object.
This counter does not increment when the interface is
operating in full-duplex mode.
Statistic Description