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RE: a radical proposal (Re: protocols that don't meet the need...)
MK> Date: Wed, 15 Feb 2006 15:35:27 -0800 MK> From: Matthew Kaufman MK> So this is a good proposal if I*(I-1)/2 < C where MK> C = number of ASNs issued to dual-homed customers MK> I = number of ASNs issued to "Transit Providers" said customers might select MK> from MK> MK> (Note that it is bigger than that on the left if anyone, god forbid, has MK> *more* than two ISPs) Note that I specifically said "dual-homed leaves". MK> My guess is that even with all the consolidation in the industry, the left MK> side grows too quickly for this to be a good idea. (It'd probably be a great MK> way to finish using up the rest of V4 space, though) Wrong, wrong, wrong. The left side of your equation assumes that EVERY transit provider will cooperate with EVERY other transit provider. Do all ~30k transit providers service your region? Didn't think so. How about even 1% of them? I doubt it. Let's compare _actual needed_ coop ASNs with _actual needed_ status quo ASNs. Separate theoretical upper bound from what's gonna happen in the real world. Now let's look at the bigger issue of route consolidation. Follow along carefully, folks. Want to dual-home to SBC and Cox? Great. You get IP space from 1.0.0/18 which is advertised via AS64511. Lots of leaf dual-homers do the same, yet there is ONE route in the global table for the lot of you. SBC and Cox interconnect and swap packets when someone's local loop goes *poof*. Flaps within 1.0.0/18 never hit the outside world. Everyone is happy. Eddy -- Everquick Internet - http://www.everquick.net/ A division of Brotsman & Dreger, Inc. - http://www.brotsman.com/ Bandwidth, consulting, e-commerce, hosting, and network building Phone: +1 785 865 5885 Lawrence and [inter]national Phone: +1 316 794 8922 Wichita ________________________________________________________________________ DO NOT send mail to the following addresses: email@example.com -*- firstname.lastname@example.org -*- email@example.com Sending mail to spambait addresses is a great way to get blocked. Ditto for broken OOO autoresponders and foolish AV software backscatter.