Enable Netflow functionality on a Router Vs CPU Performance

[a.guillen]

Hi Gurus of Cisco.

I am in a project to monitor some KPI on my some routers, We have a SNMP tool, and recently we bought a features of Netflow to integrate to this managment.

Ours routers in average has peaks of 40% of consume of CPU

If for example I enable this functionality

router#enable

Password:*****

router#configure terminal

router(config)#interface FastEthernet 0/1

router(config-if)#ip route-cache flow

router(config-if)#exit

router(config)#ip flow-export destination 192.168.9.101 9996

router(config)#ip flow-export source FastEthernet 0/1

router(config)#ip flow-export version 9

router(config)#ip flow-cache timeout active 1

router(config)#ip flow-cache timeout inactive 15

router(config)#snmp-server ifindex persist

router(config)#^Z

router#write

enable on both interface (FastEthernet 0/0 and FastEthernet 0/1)

My doubt is, The CPU processing would be grow?. Enable this feature will be damage the performance of the Routers (CPU, Memory, more traffic on his interface).

Please, let me know.

I hope your comments / Suggestion

[jawad-mukhtar]

          check this.

  http://www.google.com.pk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CCgQFjAA&url=http%3A%2F%2Fwww.cisco.com%2Fen%2FUS%2Fsolutions%2Fcollateral%2Fns341%2Fns524%2Fns562%2Fns583%2Fnet_implementation_white_paper0900aecd80308a66.pdf&ei=aKMJUr_o...

Jawad