211NetStream filtering and samplingNetStream filteringNetStream filtering uses an ACL to identify packets. Whether NetStream collects data for identifiedpackets depends on the action in the matching rule.• NetStream collects data for packets that match permit rules in the ACL.• NetStream does not collect data for packets that match deny rules in the ACL.For more information about ACL, see ACL and QoS Configuration Guide.NetStream samplingNetStream sampling collects statistics on fewer packets and is useful when the network has a largeamount of traffic. NetStream on sampled traffic lessens the impact on the device's performance. For moreinformation about sampling, see "Configuring samplers."NetStream configuration task listWhen you configure NetStream, choose the following configurations as needed:• Choose the device on which you want to enable NetStream.• If multiple service flows are passing through the NDE, use an ACL to select the target traffic.• If the network has a large amount of traffic, configure NetStream sampling.• Determine the export format for the NetStream data export.• Configure NetStream flow aging.• To reduce the bandwidth consumption of the NetStream data export, configure NetStreamaggregation.
