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

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