Inaccurate Netflow Traffic - Cisco 6500

Hi,

We downloaded NFA Trial for Linux and configured our Cisco 6509 with SUP32 running native IOS, Version 12.2(18)SXF15a. We followed the instruction provided, at least I think we did, because it was configured by one of our network engineer.

The issue we are having are the following:

#1, Traffic gathered on our BGP peers (from interface) is inaccurate, almost doubled compared to Cacti. EX: NFA on Peer A shows 15.73kbps In and 348.56Mbps Out, whereas in Cacti Peer A shows 25.24Mbps In and 163.78Mbps Out.
#2, Only outbound traffic on our BGP peers (from interface), there are only minimal inbound traffic.
#3, Traffic gathered using IP Groups seems to be off as well.

Can some one please let us know what we are doing wrong, anything obvious?

Regards,

Shawn