Alternative to NetFlow for Measuring Traffic flows
Richard A Steenbergen
ras at e-gerbil.net
Tue Dec 17 03:28:38 UTC 2002
On Mon, Dec 16, 2002 at 09:16:55PM -0500, K. Scott Bethke wrote:
> based on ALL the ASN's of the people on the peering switch.. but in most
> cases anyone pushing any real traffic will probably not have fine grained
> samples enough to determine a peering relationship based on a single AS
> with this method. Maybe Im wrong but hey if you are taking 200megs from any
> one ASN I would hope you knew about it.
Also, that method has the same "knowing the routes" problem as netflow.
Whereever you are getting your list of ASN's route ASN.*"'s routes, there
is pretty much no way they are accurate (for an ASN of ANY size).
You would have to statically route (or otherwise inject routes with a
specific nexthop) a list of their customer prefixes that would have to be
Richard A Steenbergen <ras at e-gerbil.net> http://www.e-gerbil.net/ras
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