Dell OpenManage Network Manager Client Manual page 215

Icons
The the icons next to listed devices mean the following:
Icon
In the GRAPH INVENTORY tab (not the topology), the icons to the left of the devices are alarm
icons, and their color reflects the highest alarm state on that device. Icons that appear on the right
in the summary tree view displays the highest alarm severity for that type of device.
Type Explanation
Alarm This shows the alarm state of the devices listed.
In a composite list, like appears in Inventory, it
shows the highest alarm state.
Indeterminate No alarm information is available for this device.
Status Green means the device is Online, red means
Offline, and yellow means indeterminate.
Topology Alarm These appear next to the device icons. The
Triangle upward pointing triangle indicates the icon
attached is a top-level device. The color in the
circle is connection status color described above.
The color in the triangle the device's alarm state.
If the triangle points down, it indicates the
triangle's alarm state color comes from a "child"
component of the node.
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