Fabric Watch Monitoring in a DRM Environment - Application Notes

Fabric Watch Overview
6 Application Notes – Fabric Watch Monitoring in a DRM Environment
Rising/Falling Thresholds
A rising/falling threshold has only one boundary, and a value is tracked as to whether it is on the
desired side of that boundary (see Figure 3). An event will register when the counter value exceeds a
boundary from a desired range. Rising/falling thresholds are typically used for rate-based counters.
Figure 3: Rising/Falling threshold example
Change Monitor Threshold
A change monitor threshold does not have a range, and instead generates events whenever a counter
value changes. This type of threshold typically is used to indicate state changes, such as zoning
changes. Figure 4 shows an example of change monitor threshold state changes in an event log.
Figure 4: Change monitor threshold example
Time Interval
E_Port
CRC
Errors
Time Interval
E_Port
Data Rate
(kB/s)
Rising Threshold Falling Threshold
Event above threshold
Events below threshold
Threshold Threshold
CXO7967A