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24-port NWay Ethernet Switch User’s Guide

Web-Based Network Management 155

♦ Jabber The number of frames with length more than

1518 bytes and with CRC error or misalignment (bad

framing).

♦ Late Collision Counts collisions that occur at or after the

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 Received 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 Received

Error, Dropped Frames, and Undersize Frames counters.

♦ Collisions The best estimate of the total number of

collisions on this Ethernet segment.

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