The Interface Overview report is a collection of Flow dashboard reports that provide a summary of the traffic and utilization of a specific interface.
The Interface Overview consists of individual Flow dashboard reports that highlight both inbound and outbound traffic and utilization for the selected interface or a whole source (all the interfaces in one source).
By default, the report displays data for the last interface you selected from the Source list.
Note: sFlow, NetFlow-Lite, and J-Flow data is sent every x number of packets (configurable on the device), whereas regular NetFlow provides statistics about all of the network traffic. This means that sFlow, NetFlow-Lite, and J-Flow data provides a sampling of network traffic data that is not absolutely accurate, whereas NetFlow provides statistics about all network traffic data so that network traffic data is highly accurate. However, typically sFlow, along with the sample packets, sends accurate total interface traffic.
Data sampling methods may result in Interface Overview and Interface Detail reports that appear to have more or less traffic than is shown in the Flow Monitor Home page source information. This is because the sampled data shown in the Interface Overview and Interface Detail reports are derived the sampled data and the Flow Monitor Home page source information is derived from the total interface traffic data.
Note: Flow Monitor only displays data from one database at a time, and by default, displays the most current data. If you select a time period that includes data stored in both the Flow database and the Flow Archive database, a note displays below the date range informing you that not all data is shown for the specified date range. For example, if you select a date that includes 39 days of archived data, and one hour of current data, one hour of current data is displayed in the report. You must modify the report's date to view the archived data.
In addition to customizing the report data, you can configure the individual dashboard reports within the Interface Overview report.
Note: Collapsing a dashboard report does not remove it from the report. Instead, it collapses the dashboard report data and displays only the dashboard report title bar.
Click Export, at the top right of the page, to export reports. Click Email to E-mail a report or to manage Scheduled Reports. For more information see, Using Scheduled Reports in Flow Monitor: printing, exporting, and emailing reports.
Use the Export button on a dashboard report's menu to export data to either a text file, Microsoft Excel, or a PDF. For more information, see Exporting report data.
Tip: You can view the Interface Details report for the selected interface by clicking Interface Details at the top of the page.