HI Wilson,
we us ethis command to see the traffic going through the router:
we see that netflow sees the traffic flow sourcing from the inside interface (Se0/0/0.3,Se0/0/0.2,Se0/0/0.1) from IP address 10.10.228.21, 172.17.228.21, 172.16.228.21 going to IP address 224.0.0.5 out the outside interface (NULL).

1st red : show the Packet size.
2nd Red shows the # Active Flows
3rd Red shows Rates and Duration.
and last three serial interface....are showing the flow details.
Hope it helps.
Regards
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