METRObility Optical Systems 8124-01-M User Manual
Page 103
Master Hub Configuration & Console Management 103
FCS Errors: The total number of packets received by the port
that had a bad Frame Check Sequence.
Alignment Errors: Total Alignment Errors frames within the
proper size (64 to 1518 octets) received by the port.
Frame T oo Long: Total frames received by the port that were
longer than 1518 octets (excluding framing bits, but including
FCS octets).
Short Events: Total frames received by the port that were
shorter than 64 octets or activity duration was shorter than the
event, ShortEventMaxTime. (74 to 82 bit times)
Runts: The total number of packets received that were less than
64 octets due to collisions or activity duration that was greater
than the ShortEventMaxTime event and less than the
ValidPacketMinTime event.
Collisions: Total collisions.
Late Events: Total events received by the port where the
activity duration is greater than the LateEventThreshold.
Very Long Events:
Total events received by the port where the
activity duration is greater than the MAU Jabber Lockup
Protection timer TW3.
Data Rate Mismatches:
Total frames received by the port with
no collisions and with an activity duration that was greater than
the ValidPacketMinTime event. Also frequency (data rate) is
detectably mismatched from the local frames mismatch
frequency.
Auto Partitions: Total number of times the port was
auto-partitioned.
Isolates (100Mbps only):
Total isolates for 100Mbps