Stackable NWay Ethernet Switch User’s Guide
94
Using the Console Interface
♦
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.
♦
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, Bad Fragment, Jabber, Late Collision, Mac Rx Error,
Dropped Frames, and Undersize Frames counters.
♦
Collisions
The number of times packets have collided on this port.
Port Packet Analysis Statistics
To access the fourth item on the
Traffic Statistics
menu, choose
Port
Packet
Analysis Statistics
. The following
table appears:
Figure 6-57. Packet Analysis Statistics table
Select the desired device in the Switch field, the desired port in the Port field, and the desired increment setting in the
Update Interval field:
5 sec
,
15 sec
,
30 sec
,
1 min
, or
Suspend
. Press CLEAR COUNTERS to clear all counters for a
desired port.
The statistic counters displayed are defined as follows:
♦
64
,
65-127
,
128-255
,
256-511
,
512-1023
,
1024-1536
The number of good frames of various length ranges, both valid
and invalid.
♦
RX (GOOD)
The number of good frames received. This also includes local and dropped packets.
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