13
♦
CRC AlignErrors (Pkts)
Counts otherwise valid frames that did not end on a
byte (octet) boundary.
♦
UndersizePkts (Pkts)
Counts packets received that were less than 64 octets long
(excluding framing bits, but including FCS octets) and were otherwise well formed.
♦
OversizePkts (Pkts)
Counts packets received that were longer than 1518 octets
(excluding framing bits, but including FCS octets) and were otherwise well formed.
♦
Fragments (Pkts)
Counts 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 (Alignment Errors).
♦
Jabbers (Pkts)
Counts frames longer than the maximum 1518 bytes (octets)
with either bad framing or an invalid CRC.
♦
Collisions (Pkts)
Counts transmission collisions on the Ethernet segment.
♦
The Hub also collects packet distribution statistics categorizing Ethernet frames by
length:
•
64 Octs (Pkts)
•
65-127 Octs (Pkts)
•
128-255 Octs (Pkts)
•
256-511 Octs (Pkts)
•
512-1023 Octs (Pkts)
•
1024-1518 Octs (Pkts)
Utilization
An Ethernet segment can be monitored using the Utilization display.
