not showing all traffic

not showing all traffic

I have a cisco 2800 router with 3 multilinked T1 lines which gives me 4.5MB of bandwidth. When looking at the netflow analyzer 6 pro it only shows 20% out traffic just under 1MB and no in traffic but when I look at MRTG for that router it shows that the router is being maxed out both the incoming and outgoing. Why is it not showing the incoming traffic ?

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