ProfessorI am definitely going to check that out, Mike -- always wished we could have that in LM! To answer the original question, there is a way to detect SNMP access failures, but it relies on you knowing something that is not well documented. If you check the Uptime datapoint, you will find it has no threshold, but will generate a warning on "No Data", so:
We always have rules like the above for each of our clients as well as similar rules for WMI failure. I have recommended previously that datapoints with "No Data" alerts are indicated in the tuning page along with regular thresholds.
