To be able to obtain traffic information, the NetFlow V9 data communication frames carry a vast arrange of information. The following is a NetFlow V9 export packet example: Still, IPFIX is very similar to Netflow v9 process and structure. There is a NetFlow v10, referred to as IPFIX which is not considered Netflow but a variance. The latest version of this protocol is Netflow Version 9. Now, other networking vendors have added their version of Netflow, such as j-Flow by Juniper, sFlow by HP, NetStream by Huawei, and RFlow by Ericsson. Cisco networking devices series 7000, 7200, and 7500 implemented Netflow for the first time. Netflow was initially developed by and for Cisco switching technologies around 1996, since the release of IOS 11.1. With Netflow, an admin can create billing reports based on bandwidth usage. An admin can also use it to learn how traffic patterns look like before adding a new device or application. They use it to ensure and improve security by knowing the baseline of where the traffic is and its inconsistencies. Network admins have many reasons for using Netflow. Netflow is a network protocol that collects information about all the traffic running through a Netflow-enabled device, records traffic data, and helps discover traffic patterns. Thankfully, Netflow makes all of that more comfortable. Information such as, who are the top talkers on the network, what protocols are they using, and the top destinations are key into a successful network monitoring. Getting to know your network traffic and its patterns can you save hours in troubleshooting, network capacity planning, or security analysis.
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