In general, and with some exceptions, ServiceNav unit service thresholds should follow the following syntax (referred to as "Nagios Thresholds").
This syntax makes it possible to define advanced thresholds allowing a much finer supervision of equipment behaviour.
The following table describes the syntax to be used :
| Syntax | Generates an alert if... | Example |
|---|---|---|
| 10 | < 0 or > 10, (outside the range {0 ... 10}) |  |
| 10: | < 10, (out of range {10 .. ∞}) |  |
| ~:10 | > 10, (outside the range {-∞ .. 10}) |  |
| 10:20 | < 10 or > 20, (out of range {10 ... 20}) |  |
| @10:20 | ≥ 10 and ≤ 20, (inside the beach {10 .. 20}) |  |
