nanog mailing list archives
Re: Networks ignoring prepends?
From: Owen DeLong via NANOG <nanog () nanog org>
Date: Wed, 24 Jan 2024 00:54:56 -0800
BGP is more of a PDVP (Policy Distance Vector Protocol). Policy will always override Distance in BGP and is pretty much the key difference between an EGP and an IGP. Once you recognize that, the rest makes much more sense. Owen
On Jan 23, 2024, at 14:29, William Herrin <bill () herrin us> wrote: On Tue, Jan 23, 2024 at 12:34 PM Niels Bakker <niels=nanog () bakker net> wrote:BGP, while a distance vector protocol, famously does not take latency into account when making routing decisions.Unless overridden, BGP takes -distance- into account where distance = AS path length. Centurylink has overridden that with a localpref so that it DOES NOT take distance into account. Which rather defeats the function of a distance vector protocol. Regards, Bill Herrin -- William Herrin bill () herrin us https://bill.herrin.us/
Current thread:
- Re: Networks ignoring prepends?, (continued)
- Re: Networks ignoring prepends? Tom Beecher (Jan 23)
- Re: Networks ignoring prepends? William Herrin (Jan 23)
- Re: Networks ignoring prepends? Chris Adams (Jan 23)
- Re: Networks ignoring prepends? William Herrin (Jan 23)
- Re: Networks ignoring prepends? Robert Raszuk (Jan 24)
- Re: Networks ignoring prepends? James Jun (Jan 24)
- Re: Networks ignoring prepends? Chris Adams (Jan 24)
- Re: Networks ignoring prepends? William Herrin (Jan 24)
- Re: Networks ignoring prepends? Chris Adams (Jan 24)
- Re: Networks ignoring prepends? Majdi S. Abbas (Jan 23)
- Re: Networks ignoring prepends? Owen DeLong via NANOG (Jan 24)
- Re: Networks ignoring prepends? William Herrin (Jan 24)
- Re: Networks ignoring prepends? Owen DeLong via NANOG (Jan 24)
- Re: Networks ignoring prepends? Tom Beecher (Jan 23)
- Re: Networks ignoring prepends? William Herrin (Jan 23)
- Re: Networks ignoring prepends? James Jun (Jan 23)
- Re: Networks ignoring prepends? Niels Bakker (Jan 23)
- Re: Networks ignoring prepends? William Herrin (Jan 22)
- Re: Networks ignoring prepends? Forrest Christian (List Account) (Jan 22)
- Re: Networks ignoring prepends? Alex Le Heux (Jan 23)