Dear All,

Hope you're doing well :)

I need a small help, hope someone could kindly assist ?

I have a Cisco 4451X router running IOS XE Version 03.15.01.S

I have configured netflow on this router as follows:

+++++++ Begin ++++++++

flow record SingNet-Internet-Traffic
 match ipv4 protocol
 match ipv4 source address
 match ipv4 destination address
 match transport source-port
 match transport destination-port
!
!
flow exporter SingNet-Internet-Traffic
 destination 130.24.24.166 <<<<<<<<<<<<< This IP is for the ManageEngine Netflow Analyzer server
 source Loopback19
 transport udp 9996
!
!
flow monitor SingNet-Internet-Traffic
 exporter SingNet-Internet-Traffic
 record SingNet-Internet-Traffic
!
!
interface GigabitEthernet0/0/1
 ip flow monitor SingNet-Internet-Traffic input
 ip flow monitor SingNet-Internet-Traffic output

+++++++ End ++++++++++

On my ManageEngine NetFlow server, I am able to detect the router interface Gi0/0/1 but no statistics - everything is zero.

Do note that there is a firewall between the router and the NetFlow server and all the routing is already in place.

On the firewall, I have opened UDP 9996 between the router loopback IP (netflow source) and the ManageEngine server IP (destination collector).

Not sure what is going wrong here - could somebody please help ?

Regards,

Rajdeep Joshi, Senior Network Designer, BT Singapore Pte LTD

+ 65 98588220