T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]]

Richard A Steenbergen ras at e-gerbil.net
Tue Mar 29 06:24:03 UTC 2005

On Tue, Mar 29, 2005 at 02:23:06AM +0100, Stephen J. Wilcox wrote:
> 701 is not the most connected, it has only customers and a restrictive 
> set of peers?

Ok, I'm just bored enough to bite. If we're talking about a contest to see 
who has the most number of directly connected ASNs, I think UU might still 
win, even with a restrictive set of peers.

Taking a look at a count of customer ASNs behind some specific networks of 
note, I come up with the following (some data a couple weeks out of date, 
but the gist is the same):

Network		ASN Count
-------		---------
701             2298
7018            1889
1239            1700
3356            1184
209             1086
174             736
3549            584
3561            566
2914            532
2828            427
6461            301
1299            243

Which begs the question, what is the largest number of ASNs that someone 
peers with? Patrick? :) Somehow I suspect that 701's customer base (702 
and 703 aren't included in the above count BTW) overpower even the most 
aggressively open of peering policies, in this particular random pointless 
and arbitrary contest at any rate.

Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)

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