NetFlow: Difference between revisions

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NetFlow support: improve pflow(4) ref and add net/flowd, and ng_netflow(4), too
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* One packet randomly selected in an interval of ''n'' packet, in Random Sampled NetFlow, used on modern Cisco routers.
 
Some implementations have more complex methods to sample packets, like per-flow sampling on Cisco Martinez Catalysts.
 
The sampling rate is often the same for all interfaces, but can be adjusted per interface for some routers.