I need to create a calculated item, which will calculate the NUMBER of interfaces with status DOWN.

Basically I need a foreach function with operators, to filter some values matching a condition like "greater" or "less than"

I made some researches. There is a trigger function count which gives us the chance of using operators like "less than", "greater than". https://www.zabbix.com/documentation...ctions/history

But the problem is, there is no way to calculate "number of up interfaces" in a trigger and create the alert.
We need something in item functions. But the related item functions dont provides operators. https://www.zabbix.com/documentation...ated/aggregate

According the documentation, it is not possible to write something like this ;

count(last_foreach(//net.if.status,1h,"lt",2))
or
count(count_foreach(/*/net.if.status,1h,"lt",2))