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24-port NWay Ethernet Switch User’s Guide
Using the Console Interface 87
Port Packet Error Statistics
To access the third item on the Traffic Statistics menu, choose Port Packet Error Statistics. The following table
appears:
Figure 6-58. Port Packet Error Statistics table
Select the desired setting in the Ports field: 1 to 4, 5 to 8, 9 to 12, 13 to 16, 17 to 20, 21-S1P2, or Slot 2 and the
desired increment setting in the Polling Interval field: 2 sec, 5 sec, 15 sec, 30 sec, 1 min, or Suspend. Pressing
CLEAR COUNTER resets the counters on this screen.
The statistic counters displayed are defined as follows:
♦ Speed If the link is up, the speed and duplex status will be displayed; if the link is down “-” will be displayed.
♦ CRC Error The number of frames that fail the CRC integrity check.
♦ Oversize Frames The number of good frames with length greater than 1536 bytes and therefore are greater than
the maximum legal length.
♦ Fragments The number of packets less than 64 bytes with either bad framing or an invalid CRC. These are
normally the result of collisions.
♦ Jabber The number of frames with length more than 1536 bytes and with CRC error or misalignment (bad
framing).
♦ Late Collision The number of collisions that occur at or after the 64
th
byte (octet) in the frame.
♦ Mac Rx Error The number of frames with received MAC Errors.