Last value in bps not correct

[verus]

Hello,

In Zabbix (6.4.1) I made an item to check the incoming and outgoing traffic from some interfaces.
The thing now is that the values I get are not correct or at least not displayed correctly.

This is what I get:

For example, I get a value of 2836056840

My configuration is like this:


To me, this configuration seems correct and other configurations are the same but a last value from 2.84 Gbps is not correct. That is much higher than the possibilities of that line.
I checked if I need to change the units but that seems correct or I don't know what to change.

On the Zabbix server I get this when I perform an snmpwalk:

So the value is indeed 10 characters.
Anybody an idea about how I can make this work? Is the "units" wrong?

Thanks, V.

[cyber]

Any preprocessing involved?

[verus]

Any preprocessing involved?

No preprocessing rules are involved:

[cyber]

I guess that's your issue...
You are reading a counter... its evergrowing number. Without proper preprocessing you will not get "values per second".

Change per second

Calculate the value change (difference between the current and previous value) speed per second. Evaluated as (value-prev_value)/(time-prev_time), where value - current value; prev_value - previously received value; time - current timestamp; prev_time - timestamp of previous value. This setting is extremely useful to get speed per second for a constantly growing value. If the current value is smaller than the previous value, Zabbix discards that difference (stores nothing) and waits for another value. This helps to work correctly with, for instance, a wrapping (overflow) of 32-bit SNMP counters. Note: As this calculation may produce floating-point numbers, it is recommended to set the 'Type of information' to Numeric (float), even if the incoming raw values are integers. This is especially relevant for small numbers where the decimal part matters. If the floating-point values are large and may exceed the 'float' field length in which case the entire value may be lost, it is actually suggested to use Numeric (unsigned) and thus trim only the decimal part. Only one change operation per item is allowed. If you mark the Custom on fail checkbox, the item will not become unsupported in case of failed preprocessing step and it is possible to specify custom error handling options: either to discard the value, set a specified value, or set a specified error message.

[durantapatra]

Hello cyber can you please help in this topic here... https://www.zabbix.com/forum/zabbix-...-4?view=thread
thank you for observation.

[verus]

I guess that's your issue...
You are reading a counter... its evergrowing number. Without proper preprocessing you will not get "values per second".

Change per second

Calculate the value change (difference between the current and previous value) speed per second. Evaluated as (value-prev_value)/(time-prev_time), where value - current value; prev_value - previously received value; time - current timestamp; prev_time - timestamp of previous value. This setting is extremely useful to get speed per second for a constantly growing value. If the current value is smaller than the previous value, Zabbix discards that difference (stores nothing) and waits for another value. This helps to work correctly with, for instance, a wrapping (overflow) of 32-bit SNMP counters. Note: As this calculation may produce floating-point numbers, it is recommended to set the 'Type of information' to Numeric (float), even if the incoming raw values are integers. This is especially relevant for small numbers where the decimal part matters. If the floating-point values are large and may exceed the 'float' field length in which case the entire value may be lost, it is actually suggested to use Numeric (unsigned) and thus trim only the decimal part. Only one change operation per item is allowed. If you mark the Custom on fail checkbox, the item will not become unsupported in case of failed preprocessing step and it is possible to specify custom error handling options: either to discard the value, set a specified value, or set a specified error message.

How can I make it right?

[cyber]

How can I make it right?

https://www.zabbix.com/documentation/current/en/manual/config/items/preprocessing