Cabletron Systems Ethernet Hubs manual Detail, Frame Breakdown Pie Chart, Statistic Definition

Accessing the Device Performance View

IRBM, IRM2, IRM3 and MiniMMAC Hubs

In addition to the banner and the Multi-Attribute Line Graph, the

Performance View provides the following buttons:

Log/Lin

This button allows you to toggle how the multi-attribute line graph is displayed. You can display the network statistics in Logarithmic or Linear format.

Detail

This button displays a view that shows Frame Breakdown and Error Breakdown pie charts. Four buttons at the bottom of each pie chart allow you to display the statistics as a total count or as a percentage of the sum of all attributes in each pie chart. You can also select Clear to clear the pie chart’s buffer. The pie chart will resume displaying the count as a percentage of the sum of all attributes in the pie chart since the buffer was cleared. For more information on how these pie charts display network attributes, refer to the SPECTRUM Operator’s Reference. The Detail button is not available for the IRM3 Hub.

The No_resources field, located below the pie chart, displays the number of No Resource conditions detected by the hub. Table 6-2and Table 6-3provide definitions of the information contained in the pie charts.

Table 6-2.	Frame Breakdown Pie Chart
	Statistic	Definition
	Good Frames	The number of frames detected on all ports of the hub.
	Errors	The sum of all errors including alignment, CRC, runts, giants
		and OOW collisions.
	Collisions	The sum of received and transmitted collisions detected by the
		hub.

Table 6-3.	Error Breakdown Pie Chart
	Statistic	Definition
	Alignment	The number of frames with alignment errors detected by the
		hub.
	CRC Errors	The number of frames with bad CRCs detected by the hub.
	Runts	The number of frames detected with a size of less than 64
		bytes.

Performance Views	Cabletron Ethernet Hubs
6-4	Management Module Guide