HP Bc1500 - BladeSystem - Blade PC Reference Manual page 260

RMON Commands
Field
Fragments
Jabbers
Dropped
Collisions
20-8
Description
The total number of packets received during this sampling interval that
were less than 64 octets in length (excluding framing bits but including
FCS octets) had either a bad Frame Check Sequence (FCS) with an
integral number of octets (FCS Error), or a bad FCS with a non-integral
number of octets (AlignmentError). It is normal for etherHistoryFragments
to increment because it counts both runts (which are normal occurrences
due to collisions) and noise hits.
The number of packets received during this sampling interval that were
longer than 1518 octets (excluding framing bits but including FCS octets),
and had either a bad Frame Check Sequence (FCS) with an integral
number of octets (FCS Error) or a bad FCS with a non-integral number of
octets (Alignment Error).
The total number of events in which packets were dropped by the probe
due to lack of resources during this sampling interval. This number is not
necessarily the number of packets dropped, it is just the number of times
this condition has been detected.
The best estimate of the total number of collisions on this Ethernet segment
during this sampling interval.
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