[collectd] aggregation plugin and "if_octets" type

[Gerardo Herzig]

Hi all. Im trying to use the aggregation plugin for, say, sum() the IN and OUT octets of our switches.
After saving this config:

<Aggregation>
    Plugin "snmp"
    Type "if_octets"
    CalculateSum true
    CalculateAverage true
    CalculateMaximum true
</Aggregation>


I have this error:
aggregation plugin: The "if_octets" type (data set) has more than one data source. This is currently not supported by this plugin. Sorry.

So, it looks i have to "split" the two datasources of the SNMP plugin. Thats fine, but i dont know how to doit, or even if it is possible to specify different "aggregations" for each data source.

Any hint would be appreciated.

Gerardo