Data export

IPv6 NetStream has two kinds of data export: traditional and aggregation.

IPv6 NetStream collects statistics about each flow and, when the entry timer expires, it exports the data in each entry to the NetStream server.

The data includes statistics about each flow. However, this method consumes more bandwidth and CPU than the aggregation method, and it requires a large cache size. In most cases, not all statistics are necessary for analysis.

IPv6 NetStream aggregation merges the flow statistics according to the aggregation criteria of an aggregation mode, and it sends the summarized data to the IPv6 NetStream server. This process is the IPv6 NetStream aggregation data export, which uses less bandwidth than traditional data export.

Table 11 lists the IPv6 NetStream aggregation modes supported. In each mode, the system merges flows into one aggregation flow if the aggregation criteria are of the same value. These aggregation modes work independently and can be configured on the same interface.