NetFlow is a network protocol (developed by Cisco) that monitors and collects important network traffic information, including peak usage times, traffic routing and application usage, to show the overall flow and volume of the network. Basically, it can track where traffic is coming from, where it is going and how much traffic is being generated at any time.
This network data can be captured at the device level, using for example, a router with the NetFlow feature enabled. Devices that use a NetFlow collector (hardware or software-based controllers) process the data and present it in readable format. There are a number of NetFlow collectors including Cisco, freeware and third party commercial vendors' products that report and utilize NetFlow data.
Image: Creating a flow in NetFlow, source; Introduction to Cisco IOS NetFlow
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
From keyword analysis to backlinks and Google search engine algorithm updates, our search engine optimization glossary lists 85 SEO terms you need... Read More »Slideshow: History of Microsoft Operating Systems
Microsoft Windows is a family of operating systems for personal computers. In this article we look at the history of Microsoft operating... Read More »Slideshow: Interesting Facts About Google Search
From Goats to Penguins, a server outage and trillions of searches, our slideshow presents interesting facts about Google and the Google.com... Read More »
Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »Java Basics, Part 2
This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »The 7 Layers of the OSI Model
The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »