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NetFlow vs. sFlow

Kentik

Network elements that support traffic monitoring protocols such as NetFlow and sFlow extract critical details from packet flows, like source, destination, byte and packet counts, and other attributes. It can capture substantially more detail about network traffic composition than SNMP metrics, which show only total traffic volume.

Network 66
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Accurate Visibility with NetFlow, sFlow, and IPFIX

Kentik

A lot of ink has been spilled over the years on the topic of flow protocols, specifically how they work and their relative accuracy. Historically, however, most of the testing, opinion, and coverage has been based on enterprise use cases and fairly low-bandwidth assumptions. Flow Tracking vs. Packet Sampling.