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Re: Internet diameter?


From: Ben Cannon <ben () 6by7 net>
Date: Wed, 21 Nov 2018 20:25:09 -0800

This begs the question, which is more meaningful a metric, AS-path or hop count?  Many networks have a large number of 
routers but the packets don’t stay in them very long.

-Ben.


On Nov 21, 2018, at 8:10 PM, Bryce Wilson <bryce () thenetworknerds ca> wrote:

I don’t have any hard statistics but I notice that on a majority of ASs on bgp.he.net <http://bgp.he.net/>, the 
average AS path length is between 4 and 5. As for the average number of hops, it clearly depends on what type of 
traffic and many ASNs have more than one router. Going on my own experience I would say between 8 and 10 hops would 
be the average of non-cached content. If you included cached content such as cdns and caches then the actual average 
might be closer to 5 to 7. This is only an estimate from my own network and those of my clients so the actual value 
may be completely different.

As with what others have said, I’m not sure on what use this data, if collected, would be. Latency is the most 
important.


Thanks ~ Bryce Wilson, AS202313, EVIX, AS137933



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