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Stackable NWay Ethernet Switch User’s Guide
Web-Based Network Management
149
♦
Jabber
The number of frames with length more than 1536 bytes and with CRC error or misalignment (bad
framing).
♦
Late Collision
Counts collisions that occur at or after the 64
th
byte (octet) in the frame. This may indicate
that delays on your Ethernet are too long, and you have either exceeded the repeater count or cable length
specified in the Ethernet standard.
♦
MAC Rx Error
Counts data errors detectable as 10BASE-TX “symbol errors,” bit patterns with illegal
encodings. This may indicate noise on the line.
♦
Dropped Frames
The number of frames which are dropped by this port since the last Switch reboot.
♦
Undersize Frames
The number of frames detected that are less than the minimum permitted frame size of
64 bytes and have a good CRC. Undersize frames usually indicate collision fragments, a normal network
occurrence.
♦
Total Errors
The sum of the CRC Error, Oversize Frames, Fragments, Jabber, Late Collision, MAC Rx Error,
Dropped Frames, and Undersize Frames counters.
♦
Collisions
The best estimate of the total number of collisions on this Ethernet segment.
Port Packet Analysis Statistics
Figure 7-46. Port Packet Analysis window
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