HI
For catos
set mls nde {hostname|ip_address} 9996
ip flow-export destination {hostname|ip_address} 9996
set mls agingtime long 64
set mls agingtime 32
set mls flow full
set mls nde enable
for IOS
ip flow-export destination {hostname|ip_address} 9996
ip flow-export source {interface} {interface_number}
ip flow-cache timeout active 1
ip flow-cache timeout inactive 15
Thanks
Mahmood