Formula on Item drives me nuts

[Bernd Hohmann]

After trying this in all variants for the last 2 days, I give up...

I created an item "Inbound" in a host..

Host: donald
Name: Inbound
Type: Zabbix agent
Key: net.if.in[{$IF.NAME}]  (user macro defined as "eth0")
Host interface: the agent
Type of information: Numeric (unsigned)
Data type: Decimal
Units: bps
Multiplier: 8

Works fine. Displays graph and so on.

Then I like to calculate an average over "Inbound" for 600 seconds so I created another Item named "AverageInbound":

Host: donald
Name: AverageInbound
Type: Calculated
Key: AvgIn
Formula: avg("donald:inbound",600)

Result:
"Cannot evaluate function [avg(60)]: item [donald.:Inbound] not found"

I tried it in different flavours. With " and without.

It works when I move "net.if.in[{$IF.NAME}]" into the formula, but this is not welcome.

Is there any chance to use an item in a calculated item?

Bernd

[heaje]

Use the item key in the calculated item as shown on the zabbix documentation page about calculated items. do not use the host:name syntax.

[Bernd Hohmann]

Use the item key in the calculated item as shown on the zabbix documentation page about calculated items. do not use the host:name syntax.

Ok. When I use a key like "net.if.in[eth0]" in the formula, which value does the formula use? The direct values from "net.if.in" or the calculated values from "Inbound" (where the key was defined)?

Thats important for me because the item "Inbound" works with the difference between two values.

Bernd

[heaje]

It uses the already collected values from the item key you specify.

[Bernd Hohmann]

Thanks a lot for your answer!

Bernd