In the IPQoS configuration file, you define the following flowacct parameters to measure flow records and to write the records to the flow table:
timer – Defines an interval, in milliseconds, when timed-out flows are removed from the flow table and written to the file that is created by acctadm
timeout – Defines an interval, in milliseconds, which specifies how long a packet flow must be inactive before the flow times out
You can configure timer and timeout to have different values.
max_limit – Places an upper limit on the number of flow records that can be stored in the flow table
For an example of how flowacct parameters are used in the IPQoS configuration file, refer to How to Configure Flow Control in the IPQoS Configuration File.