SevOne

I am looking for an effective way to monitor Interface UP Down monitoring and alert when interface is down. I have used following criteria to monitor the Interfaces. But sometimes it misses the alerting of some critical link.  

Any suggestions to setup an effective  Link down monitoring  ?

A request and a comment here...

• Could you please share the General Settings for this Policy, and whether each Indicator is Atomic or Synthetic?   If Synthetic what is the formula for each?
• You are ANDing 3 conditions, which must ALL be TRUE for the durations indicated, looking back from evaluation time (which happens every 3 minutes, and is not synchronous with data collection (i.e., poll time.)