CANOGA PERKINS 9145E Network Interface Device Software Version 2.1 User Manual
Page 69
Port Information
9145E NID Software User’s Manual
RMON Group 1 Statistics
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Pkts 256-511 - reports the total number of packets (including bad packets) received that were
between 256 and 511 octets in length inclusive (excluding framing bits but including FCS octets).
Pkts 512-1023 - reports the total number of packets (including bad packets) received that were
between 512 and 1023 octets in length inclusive (excluding framing bits but including FCS octets).
Pkts 1024-1518 - reports the total number of packets (including bad packets) received that were
between 1024 and 1518 octets in length inclusive (excluding framing bits but including FCS octets).
Drop Events - reports the total number of events in which packets were dropped by the probe due to
lack of resources. Note that this number is not necessarily the number of packets dropped; it is just the
number of times this condition has been detected.
CRC/Align Errors - reports the total number of packets received that had a length (excluding framing
bits, but including FCS octets) of between 64 and 1518 octets, inclusive, but 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).
Undersize - reports the total number of packets received that were less than 64 octets long (excluding
framing bits, but including FCS octets) and were otherwise well formed.
Oversize - reports the total number of packets received that were longer than 1518 octets (excluding
framing bits, but including FCS octets) and were otherwise well formed.
Fragments - reports the total number of packets received that were less than 64 octets in length
(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 (Align-
ment Error).
Note that it is entirely normal for Fragments to increment. This is because it counts both runts (which
are normal occurrences due to collisions) and noise hits.
Jabbers - reports the total number of packets received 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 allowed range to detect jabber is between 20 ms and 150 ms.
Collisions - reports the best estimate of the total number of collisions on this Ethernet segment.