Motorola PowerQUICC II MPC8280 Series Reference Manual page 1322

Ethernet Address Recognition
Table 36-5. RMON Statistics and Counters (continued)
Statistic
etherStatsFragments
etherStatsJabbers
etherStatsCollisions
etherStatsPkts64Octets
etherStatsPkts65to127Octets
etherStatsPkts128to255Octets
etherStatsPkts256to511Octets
etherStatsPkts512to1023Octets
etherStatsPkts1024to1518Octets
36.12 Ethernet Address Recognition
The Ethernet controller can filter the received frames based on different addressing
types—physical (individual), group (multicast), broadcast (all-ones group address), and
promiscuous. The difference between an individual address and a group address is
determined by the I/G bit in the destination address field.
Figure 36-5 is a flowchart for address recognition on received frames.
36-16
Freescale Semiconductor, Inc.
The total number of packets received that were less than 64 octets
long (excluding framing bits but including FCS octets) and had either
a bad FCS with an integral number of octets (FCS error) or a bad
FCS with a non-integral number of octets (alignment error). Note
that it is entirely normal for etherStatsFragments to increment,
because it counts both runts (which are normal occurrences due to
collisions) and noise hits.
The total number of packets received that were longer than 1518
octets (excluding framing bits but including FCS octets) and had
either a bad FCS with an integral number of octets (FCS error) or a
bad FCS with a non-integral number of octets (alignment error).
Note that this definition of jabber is different than the definition in
IEEE-802.3 Section 8.2.1.5 (10BASE5) and Section 10.3.1.4
(10BASE2). These documents define jabber as the condition where
any packet exceeds 20 ms. The allowed range to detect jabber is
between 20 ms and 150 ms.
The best estimate of the total number of collisions on this Ethernet
segment.
The total number of packets (including bad packets) received that
were 64 octets long (excluding framing bits but including FCS
octets).
The total number of packets (including bad packets) received that
were between 65 and 127 octets long inclusive (excluding framing
bits but including FCS octets).
The total number of packets (including bad packets) received that
were between 128 and 255 octets long inclusive (excluding framing
bits but including FCS octets).
The total number of packets (including bad packets) received that
were between 256 and 511 octets long inclusive (excluding framing
bits but including FCS octets).
The total number of packets (including bad packets) received that
were between 512 and 1023 octets long inclusive (excluding
framing bits but including FCS octets).
The total number of packets (including bad packets) received that
were between 1024 and 1518 octets long inclusive (excluding
framing bits but including FCS octets).
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Description Counter
FRGC
JBRC
COLC
P64C
P65C
P128C
P256C
P512C
P1024C
MOTOROLA