nanog mailing list archives
Re: Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]]
From: jdupuy-list () socket net
Date: Tue, 29 Mar 2005 23:27:51 -600
Alas, as anyone who has ever watched Internap when they go flappy flappy can attest, BGP does not handle an excessive number of transit paths
very
well. I'd really hate to picture the size of the boom that would happen
if
people WERE to exchange transit paths with each other on anything other than a rare and isolated basis.
True. And I fully support the common practice of heavy filtering on both ends of most BGP sessions to prevent route leakage. Nothing upsets an upstream more than announcing a major network via a smaller connection. Perhaps things have changed a lot in the last six years, which is the last time I got much face-to-face time with other BGP admins. Back then it seemed that the larger networks horse-traded transit pretty regularly. I do not know if was partly automated or case-by-case for each route. (And I suspect it was not always with corporate knowledge.) Especially since some networks (foreign government networks, etc.) were not as "flexible" as one would hope about peering. Again, I'd be interested in hearing from one of the bigger ones on this: UUNet, AT&T, Sprint, Level3, QWest.... If you can't say anything, I understand. John
Current thread:
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] John Dupuy (Mar 29)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] David Barak (Mar 29)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] John Dupuy (Mar 29)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] Stephen J. Wilcox (Mar 29)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] Patrick W Gilmore (Mar 29)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] Dorian Kim (Mar 29)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] Richard A Steenbergen (Mar 29)
- Re: Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] jdupuy-list (Mar 29)
- Re: Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] jmalcolm (Mar 30)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] John Dupuy (Mar 29)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] David Barak (Mar 29)
- Re: T1 vs. T2 [WAS: Apology: [Tier-2 reachability and multihoming]] Leo Bicknell (Mar 30)