[afnog] Geo. Traffic modelling

[Mark Tinka]

On Monday 23 November 2009 08:56:55 pm John Gitau wrote:

> I can for instance tell that most of my traffic is to
>  facebook, google, yahoo,cnn etc but I can't tell by the
>  AS where the server that serves the request is, If I
>  knew this then I can ask my upstream providers to ensure
>  we have more capacity to some of those
>  destinations.......

NetFlow will surely tell you where you traffic is headed 
to/coming from, and which ASN's you're talking to the 
most/least.

However, note that enabling NetFlow on routers is half the 
battle. Analyzing that data and generating meaningful output 
is the other. Free tools work reasonably well, but for the 
best detail, commercial solutions tend to be attractive when 
it comes to NetFlow.

Start off with the free tools, particularly Nfsen/Nfdump. 

Cheers,

Mark.
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