Netflow Configuration

Netflow allow us to export traffic statistics to the remote workstation. We use this data to gain traffic performance, control, or accounting in the specific network locations.

Configure netflow

• Enable Netflow
• Interface Level : ip route-cache flow
• Export Netflow information.
• global level 
• ip flow-export destination x.x.x.x <port>
• ip flow-export source x.x.x.x

Example configuration

interface Serial0/3/0

 description T1 to remote-sites

 bandwidth 1536

 ip address 10.12.255.138 255.255.255.248

 no ip redirects

 no ip unreachables

 no ip proxy-arp

 rate-limit output access-group 191 256000 32000 48000 conform-action transmit exceed-action drop

 ip route-cache flow

 service-policy output VOIP-LLQ

ip flow-export source Loopback0

ip flow-export destination 10.12.66.82 16384

ip flow-export destination 10.12.64.36 3000