Operation Manual – NAT, Netstream, Policy RoutingH3C S7500 Series Ethernet Switches Chapter 2 Netstream Configuration2-23) The NDA analyzes the data it received, and the analysis result can be used fornetwork charging and deployment.2.1.2 Implementation of NetstreamWith Netstream enabled, a stream entry is first created and saved in the Netstreamcache for the system to collect statistics about the stream. Once a preset aging time isreached, the system sends the stream entry in a Netstream export packet (generatedby encapsulating the stream entry in a UDP packet) to NSC and deletes (ages) theentry from the Netstream cache.The aging has two ways:z Aging by active time: a stream entry is aged out when the active time of the stream(the time elapsed since the stream entry was created) exceeds the correspondingpreset time limit.z Aging by inactive time: a stream entry is aged out when the inactive time of thestream (the time elapsed since the last packet of the stream passed the switch)exceeds the corresponding preset time limit.Netstream can use three versions of Netstream export packets to send aged streamentries: version 5, version 8 and version 9. But currently, only version 5 and version 9are configurable:z If version 5 is configured: the system sends normal stream entries through version5 packets and sends aggregated stream entries through version 8 packets. (Forbrevity reason, this will not be mentioned when version 5 is involved in thefollowing text.)z If version 9 is configured: the system sends all aged stream entries throughversion 9 packets.Note:If Netstream aggregation is configured, the system classifies and aggregates streamentries into aggregation entries according to configured aggregation rules, and thensends aggregation entries through Netstream export packets.2.2 Configuring Netstream2.2.1 Netstream Configuration Task ListComplete the following tasks to configure Netstream:
