Monitoring subnets

A subnet, a type of network objecta logical definition created and stored in the Exinda lilbrary, can represent any network component, can include multiple network subnets and/or multiple IPInternet protocol addresses. The Subnets report shows the top subnets by volume and their average throughput for the selected time period.

When subnets are defined, they can be specified as internal or external to your network. Inbound and outbound traffic for these subnets are reported separately. Inbound and outbound traffic is relative to the subnet, not relative to the Exinda Appliance.

Subnets are not required to be mutually exclusive. Traffic may be reported in more than one subnet. You can optionally show the top three applications for each of the top subnets.

These charts can answer questions such as:

  • What are the top subnets in my network?
  • How much bandwidth does my subnet for the New York branch or for my finance department or for my PBX phones typically consume?
  • Do each of my branches or departments (partitioned by subnet) have the same top applications?

Toggle chart components on and off by clicking the buttons at the top of he report. Note when generating a PDF report of this screen, toggle states are taken into account.


Average bandwidth is calculated as the total bits observed in the charting interval divided by the number of seconds in that interval. E.g. For a chart with an hour of data, the intervals are five minutes.

Once Network Objects get modified, it can lead to some discrepancies on how Exinda Appliance shows data in the Subnet report. Some sections of the reports may become out of sync when drilling down into conversations, URLs, and hosts. It may happen because the report shows data for all the subnets, including the ones defined before and after the change. Which subnets are included in the reports depends on the covered time period and when exactly the change happened. On the other hand, the drilled-down sections always show data based on the newer subnet definitions. Thus, it will include only data collected after the modifications.

The Subnet report has a granularity of five minutes, but for some technical limitations, the drilled-down records have a lower granularity of one hour. It leads the drilled-down records to show different data for the selected period.

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