Cabletron Systems Ethernet Hubs - page 93

Accessing the Device Performance View
IRBM, IRM2, IRM3 and MiniMMAC Hubs
Performance Views Cabletron Ethernet Hubs
6-4 Management Module Guide
In addition to the banner and the Multi-Attribute Line Graph, the
Performance View provides the following buttons:
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.
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 6-2 and Table 6-3provide
definitions of the information contained in the pie charts.
Log/Lin
Detail
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.