Error Statistics - Cisco WS-C3550-12G User Manual

Ethernet Interface Management Window

Error Statistics

The Error Statistics area provides the following information:
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Cisco Catalyst Switch Manager User Guide
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Packets with 128 to 255 octets—Total number of packets (including bad packets) received that
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were between 128 and 255 octets in length inclusive (excluding framing bits but including FCS
octets).
Packets with 256 to 511 octets—Total number of packets (including bad packets) received that
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were between 256 and 511 octets in length inclusive (excluding framing bits but including FCS
octets).
– Packets with 512 to 1023 octets—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).
– Packets with 1024 to 1518 octets—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).
Collisions—Number of collisions on this segment.
Giants—Total number of packets received that were longer than 1518 octets (excluding framing bits,
but including FCS octets) and were otherwise well formed.
CRC Error Pkts.—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).
In Discarded Pkts.—Number of inbound packets that were chosen to be discarded even though no
errors had been detected to prevent their being deliverable to a higher layer protocol. One reason to
discard such a packet is to free up buffer space.
In Dropped Pkts.—Number of events in which packets were dropped by the probe due to lack of
resources. This number is not necessarily the number of packets dropped, but is the number of times
this condition has been detected.
In Ignored Pkts.—Number of packets ignored.
In Aborted Pkts.—Number of packets aborted.
In Error Pkts.—Number of inbound packets that contained errors preventing them from being
deliverable to a higher-layer protocol.
Runts—Total number of packets received that were less than 64 octets long (excluding framing bits,
but including FCS octets) and were otherwise well formed.
Misaligned Pkts.—Alignment errors.
Out Discarded Pkts.—Number of outbound packets that were chosen to be discarded.
Out Dropped Pkts.—Number of events in which outbound packets were dropped.
Out Error Pkts.—Number of outbound packets that could not be transmitted because of errors.
Chapter 8 Interface and Subinterface Management
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