nanog mailing list archives
Re: Cogent move without renumbering
From: William Allen Simpson <wsimpson () greendragon com>
Date: Fri, 07 Oct 2005 19:28:03 -0400
Bill Woodcock wrote:
On Fri, 7 Oct 2005, William Allen Simpson wrote: > I remember presenting a paper at IETF over a decade ago about assigning > IP addresses to exchanges instead of carriers.Yes, that's been debunked many times over at this point. Still, it occurs to someone new, periodically. The problem is that the ISPs which matter are at more than one IX, so it results in massively fragmented routing, completely defeating aggregation. The cure is worse than the disease.
Actually, your memory is incomplete. Wasn't it Deering who did the analysis that it would actually _decrease_ the _global_ table to mere hundreds, but increase the internal routing tables of large carriers? And didn't the analysis show that the maximum routing table of those large carriers was still in the few thousand range? Today's routing table reports show 167203 and 171237 respectively. Certainly we're much worse off now! And given the perspective of another decade of history, I'd argue that without the incentive to join IXs, we still have the problem that most "ISPs that matter" aren't connected to _any_ IX. (Noted as well by Paul Vixie in an earlier message.) -- William Allen Simpson Key fingerprint = 17 40 5E 67 15 6F 31 26 DD 0D B9 9B 6A 15 2C 32
Current thread:
- Re: Cogent/Level 3 depeering, (continued)
- Re: Cogent/Level 3 depeering Lamar Owen (Oct 06)
- Re: Cogent/Level 3 depeering Leo Bicknell (Oct 06)
- Re: Cogent/Level 3 depeering Deepak Jain (Oct 06)
- Re: Cogent/Level 3 depeering Niels Bakker (Oct 06)
- Re: Cogent/Level 3 depeering Deepak Jain (Oct 06)
- Re: Cogent/Level 3 depeering Patrick W. Gilmore (Oct 06)
- Cogent move without renumbering (was: Cogent/Level 3 depeering) William Allen Simpson (Oct 07)
- Re: Cogent move without renumbering William Allen Simpson (Oct 07)
- Re: Cogent move without renumbering Paul Vixie (Oct 07)
- Re: Cogent move without renumbering Bill Woodcock (Oct 07)
- Re: Cogent move without renumbering William Allen Simpson (Oct 07)
- Re: Cogent move without renumbering Randy Bush (Oct 07)
- Re: Cogent move without renumbering William Allen Simpson (Oct 07)
- Re: Cogent move without renumbering Randy Bush (Oct 07)
- Re: Cogent move without renumbering William Allen Simpson (Oct 08)
- Re: Cogent move without renumbering Patrick W. Gilmore (Oct 08)
- Re: Cogent move without renumbering William Allen Simpson (Oct 08)
- Re: Cogent move without renumbering Patrick W. Gilmore (Oct 08)
- Re: Cogent move without renumbering Paul Vixie (Oct 08)
- Re: Cogent move without renumbering William Allen Simpson (Oct 09)
- Re: Cogent move without renumbering Albert Meyer (Oct 07)