Cabletron-systems 2000 User Manual download pdf (Page 131)

RMON Statistics 4-5

Statistics

The percentages displayed to the right of the numerical values for these Þelds

indicate what percentage of all packets transmitted on the network segment were

of the noted size. Unless the network segment has experienced a signiÞcant

number of runts and/or giants (which are not counted in this group), these

percentages will add up to 100. The pie chart in the center of the window provides

a graphical view of the 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.

Viewing Total, Delta, and Accumulated Statistics

By using the Total, Delta, and Accum option buttons located at the bottom of

each Statistics window, you can choose whether to view the total statistics count

(since the last time the device was initialized), the statistics count during the last

polling interval, or a fresh accumulation of statistics begun when the Accum

button was selected.

To choose Total, Delta, or Accum:

1. Click on the Total option button; after the completion of the current polling

cycle plus one complete polling cycle, the screen will display the total count of

statistics processed since the entry was created or since the device was last

initialized, whichever is most recent. These totals are updated after each

polling cycle.

2. Click on the Delta option button; after the completion of the current polling

cycle plus two more polling cycles, the screen will display the count of

statistics processed during the last polling interval. These counts will be

refreshed after each polling cycle.

3. Click on the Accum option button; after the completion of the current polling

cycle plus two more polling cycles, the screen will display a fresh cumulative

count of statistics. Note that making this selection does

not

clear device

counters; you can still re-select Total for the total count since the device was

last initialized.

Note that switching the statistics displays among Total, Delta, and Accum does

not effect the displayed peak values, as peak values are always Delta values.

TIP

The statistics windows use the polling interval you have set for the monitored device via

the Device Properties window. See your SPECTRUM Element Manager UserÕs

Guide for more information on setting the polling interval.

NOTE

If you reset your device, you must Þrst close, then re-open the Statistics window to refresh

peak values.

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Cabletron-systems 2000 User Manual Page 131

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