![]() This flow is exported to the collector for further processing. The primary output of all these NetFlow versions is a Flow Record, which gets generated by identifying the packet’s key fields such as source and destination IPs, source and destination ports, etc. IPFIX is referred to as NetFlow v10, which is an industry-regulated version of NetFlow. NetFlow v5 has a fixed packet format, whereas v9 offers more flexibility through optional templates for sending additional details of the device. Since the inception of NetfFlow, multiple versions of the protocol have been released, out of which Netflow v5 and v9 are the most commonly used ones across various devices. ![]() History of NetFlow Versions and Flow Record Where is the Bandwidth hogging (Interface).When the Bandwidth is used at maximum capacity (Top Flows).How Bandwidth is getting consumed (Top Talkers).Based on this information, one can have insights on: The NetFlow data carries information like the source and destination ports, source IP addresses, destination IP addresses, IP protocol, and the IP service type. NetFlow is a network protocol developed by Cisco Systems for collecting IP traffic information, which eventually became the globally accepted standard for traffic monitoring. Insights gained through NetFlow monitoring. ![]() This article will touch base on the following areas: By using NetFlow, monitoring network traffic not only becomes much simpler but also provides broader visibility within the network. Troubleshooting Network problems in a timely manner is extremely critical for maintaining network performance and delivering advanced network services within an organization.įor network engineers and administrators, troubleshooting network bandwidth related issues can be achieved by taking advantage of existing flow technologies within the routers and switches.
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