Statistics

Problems

 

CRC/Alignment

Indicates the number of packets processed by the network

 

segment that had a non-integral number of bytes (alignment

 

error) or a bad frame check sequence (Cyclic Redundancy

 

Check, or CRC error).

Fragments

Indicates the number of packets processed by the network

 

segment that were undersized (less than 64 bytes in length; a

 

runt packet) and had either a non-integral number of bytes

 

(alignment error) or a bad frame check sequence (CRC error).

Jabbers

Indicates the number of packets processed by the network

 

segment that were oversized (greater than 1518 bytes; a giant

 

packet) and had either a non-integral number of bytes

 

(alignment error) or a bad frame check sequence (CRC error).

Collisions

Indicates the total number of receive (those the device detects

 

while receiving a transmission) and transmit (those the device

 

detects while transmitting) collisions detected on the network

 

segment.

Undersized

Indicates the number of packets processed by the network

 

segment that contained fewer than 64 bytes (runt packets) but

 

were otherwise well-formed.

Oversized

Indicates the number of packets processed by the network

 

segment that contained more than 1518 bytes (giant packets)

 

but were otherwise well-formed.

In their default state, the percentages displayed to the right of the numerical values for these fields indicate what percentage of total packets transmitted on the network segment were of the noted type. If you select the % of Tot. Errors option by clicking the mouse in the check box, the percentages will indicate what percentage of problem, or error, packets transmitted on the network segment were of the noted type; these percentages will add up to 100. (The % of Tot. Errors option is active if there is a checkmark in the check box.) The pie chart in the center of the window provides a graphical view of the selected percentage breakdown; colors in the pie chart correspond to colors in the percentage display boxes. Values listed to the right of the pie chart indicate peak delta values recorded since the statistics screen was launched, and the date and time they occurred.

Frame Size (Bytes) Packets

The Frame Size (Bytes) Packets fields indicate the number of packets (including error packets) processed by the network segment that were of the noted length, excluding framing bits but including frame check sequence bits. Packet sizes counted are:

64

65-127

128-255

256-511

512-1023

1024-1518

3-4

RMON Statistics

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Enterasys Networks Matrix E7, 6000 manual Problems, Frame Size Bytes Packets