In Advance collector settings you can select the short aggregation step. For hourly tables this step can't be set up (it's always one minute). For daily tables it can be one hour (default) or 30 minutes or 10 minutes. For weekly tables it can be one day (default) or 12 hours or 6 hours. For monthly tables the only possible values are one day (default) or 12 hours.
Reduce factor. Automatic size reduction is used in the CFI software. This means that uninteresting (low volume) flows are not inserted into the aggregated tables (daily/weekly/monthly). The reduce factor parameter gives you the flexibility to set the amount of traffic that will be dropped. For the aggregation from the hourly tables into the daily tables there is a maximum of 3% total volume dropped, for the aggregation from daily to weekly or monthly tables there is a maximum of 1% dropped.
There are several exceptions to the rule.
A reduction factor value is set as a percentage (from 0.0 to 20.0). A zero or empty value means that the system will use the default settings. You can disable the size reduction feature by setting this value to "-1". If you disable size reduction you risk that the collector will create huge tables whereas queries may fail and the overall system may become unstable!
Setting the correct format of the tables can be very useful. For ISPs, the BGP AS numbers and next hop address can contain some interesting information. Another interesting feature is setting up accounting of source and destination interfaces on a backbone router. This setting will give you freedom to choose what you want to monitor. The more items that are selected can dramatically raise the amount of space required to store these records. Daily tables depend on hourly tables, so the format of the daily tables can be the same or reduced in format compared to the hourly table. Weekly and monthly tables depend on daily tables.
You can use one of predefined formats:
Default format of hourly table is:
Default format of daily table is:
Default format of weekly table is:
Default format of monthly table is: