User's Manual

Event System Configuration 359
Threshold Value: The absolute value of the high threshold can be set
directly in the High stress threshold value.
Changes made to the High stress threshold value will be reflected
automatically in the sensitivity slider and the Warning stress threshold
value.
If the value you enter in the High stress threshold value is larger than the
current range of the Sensitivity slider then the range of the Sensitivity
slider will be adjusted so that its least sensitive setting matches the
entered High stress threshold value.
The range of the Sensitivity slider is recalculated to a suitable range every
time you launch the Threshold Settings dialog box for an event.
For example, the default range for the Network Instability monitor is a
value from 10 minutes to 1440 minutes (1 day). If you enter a value of
2880 minutes (2 days) in the High stress threshold value and apply it to
This device then the next time you launch the Threshold Settings dialog
box for the same device the range of the Sensitivity slider will be from 10
minutes to 2880 minutes. If you subsequently change the High stress
threshold value to 120 minutes and apply it to This device then the next
time you launch the Threshold Settings dialog box for the same device
the range of the Sensitivity slider will revert back to the default range of
10 minutes to 1440 minutes.
Use Suggested Settings: For most monitor types, 3Com Network
Director can suggest threshold values for you to use based on the
monitor type. and on the events that have been previously generated by
the monitor. To view, and optionally apply, these suggested values click
Use Suggested Settings.
3Com Network Director cannot suggest threshold values for WAN link
monitors.
Every monitor may have a different threshold for each item that it
monitors. This allows you, for example, to set different utilization
thresholds for a link to a server that is normally highly utilized and a
backup link that is normally never utilized.
When you change a threshold for a monitor, you can select which items,
as appropriate, to change the threshold for: