D-Link DES 6000 Product Manual - Page 78

Unicast RX/Unicast TX

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Modular Ethernet Switch User's Guide ♦ Bad Fragment 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 64th 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, 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 6-60. Port Packet Analysis table Select the desired module in the Module 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. 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. ♦ TX (GOOD) The number of good frames sent from the respective port. ♦ Total RX The number of frames received, good and bad. ♦ TX Octets The number of good bytes sent from the respective port. ♦ RX Octets The number of good bytes received. This also includes local and dropped packets. ♦ Total RX The number of bytes received, good and bad. ♦ Unicast RX/Unicast TX The number of good unicast frames received and sent. This includes dropped unicast packets. ♦ Multicast RX/Multicast TX The number of good multicast frames received and sent. This includes local and dropped multicast packets. Using the Console Interface 73

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Modular Ethernet Switch User’s Guide
Using the Console Interface
73
♦
Bad Fragment
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.
♦
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, 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 6-60.
Port Packet Analysis table
Select the desired module in the Module
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
.
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.
♦
TX (GOOD)
The number of good frames sent from the respective port.
♦
Total RX
The number of frames received, good and bad.
♦
TX Octets
The number of good bytes sent from the respective port.
♦
RX Octets
The number of good bytes received. This also includes local and dropped packets.
♦
Total RX
The number of bytes received, good and bad.
♦
Unicast RX/Unicast TX
The number of good unicast frames received and sent. This includes dropped
unicast packets.
♦
Multicast RX/Multicast TX
The number of good multicast frames received and sent. This includes
local and dropped multicast packets.