device interface counter64 send received traffic incorrect

[danny148]

I'm struggling with my interface item measurements Send and Received Bits.

The output in zabbix does not match what it should be from the actual file transfer speed measured by differend application's. (Tested on multiple devices by downloading large bin test files from an ISP website)


I've searched a lot on the Internet and found some information but without any solution for my problem.

I tried already to edit / remove the multiplier. after this the result is also far from the actual readings.



Compaired from an realtime switch interface tells zabbix me that the speed at low transfers is way lower than the actual readings. Above the 100Mbit tells me that the speed is way higer than the readings realtime. (Even higer than my ISP line can handle) as an example
I've an 200Mbit line. Zabbix told me that it reached maximum 280Mbit/s.


I hope someone can help me with this or has already solved the same issue.


Zabbix version 4.4
Connection speed of the interfaces: 1 Gbit.
Read snmp Counter64 (1.3.6.1.2.1.31.1.1.1.6) ( because of speeds above the 114mbit's requires (ifHCInOctets) )


My Item configuration below:

Type: SNMPv2 agent
Key: net.if.in[ifHCInOctets.1]
OID: 1.3.6.1.2.1.31.1.1.1.6.1 (Counter64)
Type information: Numeric(float)
Units: bps
Interval: 1m

Preprocessing:
Custom Multiplier: 8
Change per second.


Regards Danny

[monoterrible]

Sorry if the solution I provide is very basic, I simply cloned the item, changed the key to the one detailed in the image and the oid to the one from the 64bit counters. And I don't care what a cacti reports for the same interface of the same device. The only difference I find with your data is that the type of information is numeric (unsignned). I hope it helps you.

[monoterrible]

and the interval is 5 minutes