SFlow, short for “sampled flow”, is an industry standard for packet export at Layer 2 of the OSI model. After their bytes and packets are tallied up, these compartmentalized flows are exported to a NetFlow collector.
Except for layer 3 protocols and router/switch interface, packets meeting all seven of the criteria above are grouped together. NetFlow gathers all the data pulled from IP traffic leaving the device, inspects all the packets, and consolidates them into flows based on particular areas. You can download Flexible NetFlow and IPFIX extensions.
We have already posted a blog about NetFlow on this site, which we recommend you read before continuing to read this post: In this blog, we are going to review a number of NetFlow tools. NetFlow is a network protocol that collects information about your network’s IP traffic and monitors network traffic activity.
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