Internet traffic analysis

Mon Aug 20 23:49:48 UTC 2001

On Mon, 20 Aug 2001, Patrick W. Gilmore wrote:

> 
> At 05:20 PM 8/16/2001 -0700, k claffy wrote:
> 
>  >      	"We are also seeing that 50 percent of the traffic is being
>  >       	carried by four of the major ISPs," says Roberts.
>  >       	Those being AOL (NASDAQ:AOL), MSN, Earthlink, and SBC.
> 
> Serious question: What about EarthLink's non-EarthLink-owned modems?  (They 
> do lease some modems, I have dialed into one before. :)  And what about 
> NetZero-type companies that outsource all of their modems?

MSN uses at least two dialup wholesale outfits. Earthlink uses their own
modem banks in California, IIRC, and probably also in Atlanta since they
bought Mindspring, and outsources to at least two other companies in other
cities.

SBC probably has its own dialups, but its Prodigy division used to use
Splitrock for dialup access and may still use Splitrock.

> If he is measuring traffic off routers, I do not see how he could 
> differentiate between traffic on modem leased by $PROVIDER_A and traffic on 
> that same modem an hour later leased by $PROVIDER_B.

He can't without access to logs.

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