nanog mailing list archives
Re: Networks ignoring prepends?
From: William Herrin <bill () herrin us>
Date: Wed, 24 Jan 2024 01:20:48 -0800
On Wed, Jan 24, 2024 at 12:55 AM Owen DeLong <owen () delong com> wrote:
BGP is more of a PDVP (Policy Distance Vector Protocol).
Hi Owen, That's a distinction without a difference. All but the most rudimentary implementation of a distance-vector protocol supports policy definition and enforcement. BGP has more policy knobs than most, but at its heart it's still a distance-vector protocol and until pushed off its default settings its first differentiator for distance is the length of the AS path. Only link-state protocols tend to lack policy knobs since all nodes must agree about the correct full path, not just the next closest hop. When you twist a policy knob to move BGP off its defaults, you take responsibility for making a better routing choice. And for correcting that choice if it should prove faulty. What I've seen here in this thread is a bunch of folks abdicating that responsibility. That's not unexpected, but it is disappointing. Regards, Bill Herrin -- William Herrin bill () herrin us https://bill.herrin.us/
Current thread:
- Re: Networks ignoring prepends?, (continued)
- 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)
- Re: Networks ignoring prepends? Owen DeLong via NANOG (Jan 22)