subtract items values in graph

[jsimoes]

Dear friends,

I am trying to show in a graph the instantaneous bandwith of a Patton gateway, using SNMP. With SNMP, I can get the accumulated value of the bandwith used (that is the only MIB available at this moment). So, the only way I see is to subtract the value with the previous value. and then divide it with the time period between the SNMP commands.

Is this possible to get? Either in items or in graphs?

Thanks in advance,

Jose Simoes

[Alexei]

In item definition, select "Delta (speed per second)". Make sure that item value type is set to Float. ZABBIX will automatically calculate Bps.

[jsimoes]

It worked. thanks

Jose Simoes