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Configuring Flexible NetFlow Export on a Cisco Device

Flexible NetFlow is a powerful tool for traffic analysis and data export on networking devices. This document outlines how to configure Flexible NetFlow export in a few easy steps, allowing you to monitor specific network behaviors using customized flow records.

Steps for Configuring Flexible NetFlow Export​

Configuring Exporter:

Enter global configuration mode on the router or MSFC, and issue the following commands to create the exporter:

flow exporter {exporter_name}
 destination {destination_ip_address}
 export-protocol version-9
 transport udp 2055
 exit

Configure the Flow Monitor with the following commands:

ip flow monitor {monitor_name}
 record MFEnetflow-original
 exporter {exporter_name}
 cache timeout active 60
 cache timeout inactive 15
 exit

To enable NetFlow on a specific interface, enter global configuration mode and issue the commands:

interface {interface} {interface_number}
ip flow monitor {monitor_name} input

For further information on configuring your IOS device for NetFlow data export, refer to Cisco's NetFlow commands documentation.