Hey guys

I have a weird problem on alerting system.
One of my ethernet interface of a device went down for 10 minutes. I can see the flap in observium eventlog :

2014-04-29 15:18:28 eth port-1-1-1-1 Interface changed: [ifOperStatus] down -> up
2014-04-29 15:08:28eth port-1-1-1-1 Interface changed: [ifOperStatus] up -> down

I have a specific alerting probe on "ifOperStatus equals down" but it has not been triggered :



ETH PORT-1-1-1-1
Checks OK14s 2h 59m 42sNever

It usually work, but not this time.
Is there a log or something that could help me understand why it did not ring the bell ?

Greg