Appendix: Probe Versus Videobridge Controller - Alarms - BridgeTech VB20 User Manual

1. Appendix: Probe Versus VideoBridge Controller - Alarms

The probe alarms are independent of the VideoBridge Controller (VBC) alarms. The
probe has been designed to yield instantaneous alarms based on the current
measurements. This typically results in lots of short lived alarms that would be "too
much" for the VBC to report, as the VBC may control a large number of probes. The
VBC therefore generates alarms based on error-second statistics gathered from probes
during a selectable time period (default 60 minutes - sliding window).
Ethernet measurement data are sent from the probe together with Ethernet error-
second threshold values (as set in the probe Setup - VBC thresh. view). The VBC
monitors the error seconds for each parameter and will raise an alarm provided that
the error-seconds figure exceeds the threshold value, as monitored during the
windowing period.
Figure 8: VBC alarming based on probe measurements
PROBE USERS' MANUAL VERSION 5.0
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