Re: Can route-views be trusted?

On Tue, 3 Mar 2026 at 10:41, Elmar K. Bins via NANOG
<[email protected]> wrote:

> Local withdrawal does not result in *quick* global withdrawal. There's so much
> dampening involved, that you can get lucky, but that's not a given.
>
> If you still see the prefix two hours later, that's when I'd start thinking
> deeper about the heat death of the universe. Until then, it is what it is.

Sir, are you saying Internet convergence typically takes hours?

Almost no one uses dampening, and it hasn't been BCP in years. Perhaps
if we'd have dampening that reduces local-pref, it could be useful.

DFZ all the time has extremely flappy prefixes, which see many
thousands of updates per day propagating invariably to any vantage
point that publishes the data.

Slow propagation is an exception, not rule. Most likely reason for
such would not be dampening, but would be outQ that cannot be starved
for example because lack of DRAM by the far end forced the window to
zero.

-- 
  ++ytti
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