Cisco 2900 ISR Configuration

This document provides configuration commands to enable Motadata NetFlow on Cisco 2900 Series Integrated Services Routers (ISR).

Configuration Steps

Configure the NetFlow collector destination IP/hostname and UDP port:

ip flow-export destination {hostname|ip_address} 2055

Set the source interface IP used for exporting NetFlow packets:

ip flow-export source {interface}

Set the NetFlow export version to v5:

ip flow-export version 5

Set the active timeout (in minutes) to export long-lived flows periodically:

ip flow-cache timeout active 1

Set the inactive timeout (in seconds) to export idle flows after no traffic is seen:

ip flow-cache timeout inactive 15

Persist interface indexes across reboots to avoid collector-side interface mapping changes:

snmp-server ifindex persist

Enable the following command on all the Layer 3 interfaces:

interface {interface} {interface_number}
ip flow ingress
exit

After completing the configuration, navigate to Menu > Flow Explorer and select Explorer to view the active flow data.