By using the Graph Timeline, you can select a period of time to view in the graph. For instructions, see Move through time.
The Graph Timeline shows the following:
- Alarm Severity Icons
— Represents a time scan. Colored alarm severity icons become visible when you zoom
in. When you zoom out, the icons look like a line with multiple colors.

- Date and Time — Shows
the date and time of the scan that you are viewing. It appears toward the upper
right of the Graph Timeline.

- Shaded Box — Indicates the time period that is shown in the graph.
- Latest Scan — Click
to update the UI to the present and select the latest available scan.

- Scan Now — Click to
perform an On Demand scan. See Initiate a poll of network devices.

