cisco router sample config for nta

Maybe this doc. will help you?

http://www.solarwinds.com/support/Netflow/docs/OrionNetFlowSwitches.pdf

thanks but if we can have the router config will be mos appreciated...

there are some config. examples in this post-

yes but theyre all discussing about 6509

ive seen one on the netflow 3.0 docu itself..

interface GigabitEthernet0/1
ip address 10.3.1.2 255.255.255.252
ip route-cache flow
!
ip flow-export source GigabitEthernet0/1
ip flow-export version 5
ip flow-export destination 1.2.0.12 2055

on this config, if we want to enable netflow on a second interface ie gigabit0/2, will the ip flow-export source gigabit0/2 also necessary?

All you need to do to enable netflow on an interface is "ip route-cache flow".  If you have flows already coming from an interface nothing else needs to be done.  You can also use instead of "ip route-cache flow" , "ip flow ingress" as well as" ip flow egress".  With those 2 you can obviously pick a direction for the flows and ip route-cache flow will auto turn on flows fo subinterfaces where the ip flow commands will not.