Hi Support team:

     I found some interfaces still can't  get NFA data on OPM（My probe OPM integrates with NFA standalone）. Then, I have checked my Cisco 2811 devices' setting again and thought the setting was OK as given below,My license of NFA still allow to add some interfaces to monitor：

   sh run:

     interface FastEthernet0/1

     bandwidth 4096

     ip address XXXX 255.255.255.252   # XXXX is  interface's ip

     ip flow ingress

     ip flow egress

     duplex auto

     speed auto

    ip flow-cache timeout active 1

   ip flow-export source FastEthernet0/1

   ip flow-export version 5

   ip flow-export destination XXXX 9996   #XXXX is NFA

   snmp-server community XXXX RO       #XXXX is community

   Is the command right? My some Cisco 2811 devices are set by these commands and can get the data flow on OPM, but the other can't work. I don't know what happen to them.