Use ifInOctets_perc, an example of this is in the docs. 


https://docs.observium.org/alerting_examples/

docs.observium.org
Observium Documentation



From: observium <observium-bounces@observium.org> on behalf of Pieter De Wit via observium <observium@observium.org>
Sent: Monday, September 7, 2020 12:46:46 PM
To: Observium
Cc: Pieter De Wit
Subject: [Observium] Alert on port utilisation percent ?
 
Hi All,

Is there a way to alert on port usage percentage ? If so, what is the metric called ?

We are *currently* on CE.

Thanks,

Pieter
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