Zabbix 1.1.4 - Interface speed wrong calculation

[vrtareg]

Hi

I create 4 items to monitor 2 network interface inbound and outbound speed:

Key: net.if.in/out[eth0/eth1]
Type: Numeric (integer 64 bit)
Units: Bps
Multiplier: Not used
Store Value: Delta

All going Ok until summary bytes transferred trough this devices was less than about 1000000000000 bytes.
Now the summary for eth0 and eth1 interface is:

eth0 RX bytes:1024335677033 (953.9 GiB) TX bytes:398464409759 (371.0 GiB)

eth1 RX bytes:663456375 (632.7 MiB) TX bytes:474814172 (452.8 MiB)

Zabbix starts to show incorrect speed for interface eth0 - 600-1200 Mbps in order of 30-80 Mbps.
How can this corrected ?

Thanks
Areg

[vrtareg]

Hi

The actual speed for the "Interface_in-out_bad.png" image is 13-29 MBps.

Areg

[vrtareg]

Hi Alexei

It seems that nobody don't have the same problem.
Some time ago i post another thread about the same issue and there are no answer too.

Interfaces In/Out

Regard
Areg

[Alexei]

I'll look at this later.

[vrtareg]

Thanks
Areg

[ProTON]

A problem is a little bit different for me. It always shows the same speed. Type is Delta. See: http://www.tekila.lt/public/eth0.PNG