User guide

B. 7210 SAS-M Release 1.0 statistics counters
Alcatel-Lucent 5620 Service Aware Manager, Release 7.0 R6 December 2009 B-13
3HE 04551 AAAE Ed. 01 Statistics Management Guide
excessiveCollisions long dot3StatsExcessiveCollisi
ons
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. Discontinuities in the
value of this counter can occur at
re-initialization of the management
system, and at other times as indicated by
the value of ifCounterDiscontinuityTime.
REFERENCE [IEEE 802.3 Std.],
30.3.1.1.11,
aFramesAbortedDueToXSColls.
fcsErrors long dot3StatsFCSErrors 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 pertain are, according to
the conventions of IEEE 802.3 Layer
Management, counted exclusively
according to the error status presented to
the LLC. Note: Coding errors detected by
the physical layer for speeds above 10
Mb/s will cause the frame to fail the FCS
check. For interfaces operating at 10
Gb/s, this counter can roll over in less
than 5 minutes if it is incrementing at its
maximum rate. Since that amount of time
could be less than a management station's
poll cycle time, in order to avoid a loss of
information, a management station is
advised to poll the dot3HCStatsFCSErrors
object for 10 Gb/s or faster interfaces.
Discontinuities in the value of this counter
can occur at re-initialization of the
management system, and at other times
as indicated by the value of
ifCounterDiscontinuityTime. REFERENCE
[IEEE 802.3 Std.], 30.3.1.1.6,
aFrameCheckSequenceErrors.
5620 SAM counter name Type MIB counter name Description
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