Here are some answers to frequently asked questions about reports.
When should I create an activity map?
With an activity map, you can view the connections between devices across your network in
real-time or for a specific time interval. Instead of a static visualization of how your
network is organized, an activity map provides a dynamic view of protocol activity on your
network as it occurs. An activity map can help answer the following questions:
- Is a server that should be disconnected or decommissioned still sending or receiving
traffic from other devices?
- Which services are interacting with my slow application server? Is one of these services
sending an overwhelming volume of traffic that might be affecting application
- Are databases or authentication servers making unauthorized connections with other
What kind of devices can I see in an activity map?
Any device can appear in an activity map. For example, you can view connections between L2,
L3, and custom devices. However, you can only select devices with full L4-L7 protocol
metrics as the origin of an activity map.
For more information, see What is an L3 device? in the Device Discovery FAQ.
Do applications appear in a map?
You cannot view
applications in an activity map. We recommend that you create a device group for the
application you want to see in a map.
Why don’t I see every device label in my map?
optimize the amount of information you can view in a large map, the map does not display every
device label by default. Zoom in or hover over circles and lines to view their
What do the icons represent?
Icons represent the device role. A role,
such as gateway or file server, is automatically assigned to a device based on the type of
traffic the ExtraHop system observes for that device. You can change a device’s role from its
For more information about what each icon represents, see Labels and icons in Activity
Can I export my map?
Yes, you can export the entire map
as a PNG, SVG, or PDF file. Click the command menu
in the upper right corner to access export options.
Can I view my map in 3D?
Yes, click the command menu
in the upper right corner of the
activity map and select View 3D Layout
. Maps displayed in the 3D layout
automatically rotate until you pan or zoom on the map
What does the width of the line mean?
The width of the
line corresponds to a metric, such as bytes, connections, or TCP turns. A wider line
highlights which connections between devices are associated with more activity. By default,
the width of the line corresponds to bytes, or volume of traffic.
Why are some circles larger than others?
The size of the
circle corresponds to a metric, such as bytes, connections, or TCP turns. Larger circles
highlight which devices are associated with more activity. By default, the size of the circle
corresponds to bytes, or volume of traffic.
How are devices grouped together on a map?
show you a dynamic view of real-time connections between devices. The placement of devices is
determined by an algorithm that optimizes the map layout. Devices are not grouped together by
relationship or network topology.
Will map elements change color based on alert or troubleshooting status?
If alerts are assigned to a device in a map, that device can change color to highlight the
most severe status of those alerts. Click Display alert status to
view alert status colors.
For more information see Alert status in Activity Map concepts.
Why does the map layout change while I'm viewing
When the time interval in the upper left corner of the page is set to an interval
such as Last 30 minutes
, Last 6 hours
, activity map data will continuously update every minute
with real-time data. To stop real-time layout updates, select a custom time interval with a
specific start and end date.