nanog mailing list archives
Re: valley free routing?
From: William Herrin <bill () herrin us>
Date: Thu, 6 Mar 2014 21:56:38 -0500
On Thu, Mar 6, 2014 at 9:23 PM, Matthew Petach <mpetach () netflight com> wrote:
On Wed, Mar 5, 2014 at 12:23 PM, William Herrin <bill () herrin us> wrote:Can anyone tell me about a situation in which a route which was not valley free was not a result of a misconfiguration or a bad actor? For those who don't recall the terminology, a network path is valley free if it crosses exactly zero or one free peering links when traveling between the two endpoints.Isn't that the way most of the IPv6 internet ran for many years? ISP A -> 6939 <- ISP B, settlement-free connections all around? It's what established 6939 as the core of the IPv6 internet.
Hi Matthew, By peering I mean a link on which the two participants offer and accept substantially fewer routes than "the rest of the Internet." Usually only the routes for each participant's respective customers. The clever folks at HE provided full IPv6 transit as a loss leader which enhanced their market position (put them on the map quite frankly). That's not a "valley" in this context. I'm really intrigued by the multiple reports of RENs creating a sort of shadow network where other RENs are permitted to cross their internal backbone at no cost but not access their general Internet transit. That does seem to be a valley. Is anybody outside the Research and Education industry doing this sort of thing? Regards, Bill Herrin -- William D. Herrin ................ herrin () dirtside com bill () herrin us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
Current thread:
- Re: valley free routing?, (continued)
- Re: valley free routing? Valdis . Kletnieks (Mar 05)
- Re: valley free routing? JÁKÓ András (Mar 06)
- Re: valley free routing? Joel Maslak (Mar 05)
- Re: valley free routing? Iljitsch van Beijnum (Mar 06)
- Re: valley free routing? Randy Bush (Mar 06)
- RE: valley free routing? Siegel, David (Mar 07)
- Re: valley free routing? William Herrin (Mar 07)
- Re: valley free routing? Randy Bush (Mar 07)
- Re: valley free routing? William Herrin (Mar 07)
- RE: valley free routing? Siegel, David (Mar 07)
- Re: valley free routing? William Herrin (Mar 06)