A while ago I had changed my alert rule for Interfaces to trigger from "Operational Status is equal to Down" to "Operational Status is not equal to Up" to catch all other bad conditions. The result is I get the false alert "Operational Status is Unknown" quite frequently on different devices. Upon quickly checking the devices' interface by snmp browsing, the interface status never changed to "unknown". The interface index did not change either. What am I doing wrong?
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