Interfaces traffic report

Issue:

Mismatch in the minimum and maximum values displayed in the interface Tx/Rx traffic reports and interface traffic graph (in the Interface snapshot page).

Cause:

The min/max values displayed in the graphs and reports are fetched from two different tables - SUM and RATE.
OpManager displays the exact minimum and maximum values (fetched from RATE table) for reports under Reports -> Health and Performance reports (Interfaces by Rx Traffic, Interfaces by Tx Traffic). Whereas, the values displayed in the graphs under Interface snapshot -> Graphs are fetched from the SUM table, which is nothing but an average of a set of values collected over that time frame.

For Example, let the monitoring interval be 15 minutes (default) and the data points for Rx traffic be as the value in the below table.

Here, the

• MIN value = 100 bps
• MAX value = 400 bps

During archive, OpManager sums up all the DELTA_TIME and INOCTETS values and displays it in the SUM table. The SUM table reads the following information:

Here, the

• MIN value = 250 bps
• MAX value = 250 bps
• AVG value = 250 bps

OpManager will only have one entry for an hour. So the minimum, maximum and average values will have the same value, i.e the average value. In a day, this table will have 24 entries and the Min/Max values out of those 24 entries will be displayed.

Solution:

If you want to have the exact minimum and maximum values displayed across all reports and graph's legend (table values shown in the interface graph), do the following changes.

1. Stop the OpManager service.
2. In the directory <OpManagerHome>\conf\OpManager\ , open the file named serverparameters.conf and add the following command - EXACT_MIN_MAX true.
3. Save the file and restart OpManager service.
4. Log in to OpManager service and check if the exact values are displayed in the Interface Traffic Graph and Bandwidth Utilization graph's legend.

List of graphs or reports that will inherit the above change.

• Interface traffic graph (in device snapshot page)
• Interface traffic graph (in device snapshot page)
• Bandwidth utilization graph (in device snapshot page)
• All traffic reports (under Inventory -> Generate reports)