These commands are also available on the shortcut menu.
To select objects and focus on a portion of the topology diagram
On the View menu, select Zoom > Overview Window.
A copy of the topology diagram appears in a secondary window.
Use the mouse to move the selection tool (a rectangle) to select the wanted objects in the configuration. The selected objects become the focus of the main topology pane.
Use the mouse to select the wanted objects or portions of objects in the configuration. The selected objects become the focus of the main topology pane, when lets you focus on areas of the topology diagram.