Topology
Depending on the selected drill-down options (Drill-Down Per Session or Drill-Down Per View), in the Topology pane, you can choose to view the statistics from one or more ports.
To identify specific ports, select the corresponding Network/Protocol item. By default, all statistics nodes are selected. If you select any of the nodes, a context menu displays the Unselect all subnodes option. If the nodes are deselected, this option turns to Select all subnodes.
These options are useful when handling a large number of ports. Thus, you can select one protocol item and select/deselect all ports.