Cisco CCNA Routing and Switching ICND2 200-101 Official Cert Guide

Configuring NetFlow

NetFlow Configuration and Verification

Configuring NetFlow on a router requires two separate configuration tasks:

1. Configuring the capture of data about flows, using the ip flow interface subcommand

2. Configuring details of how to send that data to the NetFlow collector, using the ip flow-export global command

First, to capture the flow data, the engineer needs to add ip flow ingress or ip flow egress commands to one or more interfaces. Both commands tell the router to capture NetFlow data for flows on the interface. The ingress option tells the router to monitor incoming packets on the interface, and the egress option tells ...