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by irl_
2467 days ago
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I worked with Brian Trammell when he wrote this, and I maintain that it missed something. The assumption is that you have no idea about the path that the data has traveled, but if you actually did know the topology of the larger transit routes and of the end-user's ISP, the "distance" that you're using for your calculations is different. It's no longer just the distance on the map, but the path along fibers and cables. I believe that by combining the topology information with the RTT data you can get a far more precise location. I also maintain that you can get all the information you need from active measurement, and that adding leaks to live traffic just so you can save that active measurement overhead is irresponsible. |
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