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28-3
Catalyst 2950 Desktop Switch Software Configuration Guide
78-14982-01
Chapter 28 Troubleshooting
LRE Statistics
Multicast Frames The total number of well-formed multicast frames received by a port. It excludes frames
received with errors, with unicast or broadcast destination addresses, or with oversized or
undersized frames. Also excluded are frames discarded or without a destination.
Broadcast Frames The total number of well-formed broadcast frames received by a port. It excludes frames
received with errors, with unicast or multicast destination addresses, or with oversized or
undersized frames. Also excluded are frames discarded or without a destination.
Discarded Frames The total number of frames discarded because of insufficient receive bandwidth or receive
buffer space or because the forwarding rules stipulate that they not be forwarded.
Alignment Errors The total number of frames received with alignment errors. It includes all the frames received
with both an FCS error and a nonintegral number of bytes.
FCS Errors The total number of frames received with FCS errors. It excludes undersized frames with
FCS errors.
Undersize frames The total number of frames received that were less than 64 octets long (excluding framing
bits, but including FCS octets) and were otherwise well formed.
Minimum size frames The total number of frames received that were 64 octets long (excluding framing bits, but
including FCS octets) and were otherwise well formed.
Oversize Frames The total number of frames received of more than 1518 bytes that have good FCS values.
Control frames Incremented for each MAC control frame (pause and unsupported) received.
Pause frames Incremented for each MAC pause control frame received.
Unknown opcode Incremented for every non-pause MAC control frame received.
Length out of range Incremented for each frame received where the 802.3 length field in the packet did not match
the number of bytes actually received. This counter is not incremented if the length field is
not a valid 802.3 length but is an ethernet packet type.
Symbol errors Incremented each time a valid carrier was present and at least one invalid data symbol was
received.
False carrier Incremented each time a false carrier is detected during idle. The event is reported along with
the statistics generated on the next received frame. Only one false carrier condition can be
generated and reported between frames.
valid, too small Incremented for each received frame that was valid but had a size that was smaller than the
minimum sized frame (of length 64 bytes).
valid, too large Incremented for each received frame that was valid but had a size that was larger than the
maximum sized frame (of length 1518 bytes).
invalid, too small Incremented for each received frame that was invalid and had a size that was smaller than the
minimum sized frame (of length 64 bytes).
invalid, too large Incremented for each received frame that was invalid and had a size that was larger than the
maximum sized frame (of length 1518 bytes).
Table 28-1 Ethernet Port Statistics (continued)
Statistic Type Explanation