264
Figure 75 IPv6 NetStream system
Flow aging
IPv6 NetStream uses flow aging to enable the NDE to export IPv6 NetStream data to NetStream
servers. IPv6 NetStream creates an IPv6 NetStream entry for each flow for storing the flow statistics
in the cache.
When a flow is aged out, the NDE does the following operations:
•
Exports the summarized data to NetStream servers in an IPv6 NetStream data export format.
•
Clears IPv6 NetStream entry information in the cache.
For more information about flow aging types and configurations, see "
."
IPv6 NetStream data export
Traditional data export
IPv6 NetStream collects the statistics of each flow and exports the statistics to NetStream servers.
This method consumes a lot of bandwidth and CPU usage, and requires a large cache size. In
addition, you do not need all of the data in most cases.
Aggregation data export
An IPv6 NetStream aggregation mode merges the flow statistics according to the aggregation
criteria of the aggregation mode, and it sends the summarized data to NetStream servers. The IPv6
NetStream aggregation data export uses less bandwidth than the traditional data export.
lists the available IPv6 NetStream aggregation modes. In each mode, the system merges
multiple flows with the same values for all aggregation criteria into one aggregate flow. The system
records the statistics for the aggregate flow. These aggregation modes work independently and can
take effect concurrently.
NSC
NDA
NDE
NDE
NSC
NDE
NDE
Summary of Contents for FlexNetwork 10500 SERIES
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